CLUSTAL O(1.1.0) Multiple Sequence Alignment

Supplemental Figure 1

CLUSTAL O(1.1.0) multiple sequence alignment

human_PepT1|AAB61693.1 ------

chimpanzee_PepT1|XP_522705.3 ------

Rhesus_monkey_PepT1|NP_001028071.1 ------

crab-eating_macaque_PepT1|AAQ56235.1 ------

house_mouse_PepT1|NP_444309.2 ------

Norway_rat_PepT1|BAA09318.1 ------

dog_PepT1|NP_001003036.1 ------

horse_PepT1|XP_001493109.3 ------MERAQHVTDADKYRHCVHVGSSERTPDK-G------RGQLVSRFRGDRRA

pig_PepT1|AAO43094.1 ------

cattle_PepT1|NP_001092848.1 ------

sheep_PepT1|AAK14788.1 ------

rabbit_PepT1|AAA17721.1 ------

gray_short-tailed_opossum_PepT1|XP_001377037.2 MGAGLATLNGSASLGDVR------LWPSPRSEEKAGRNFAQLFFAKGMILQDFFYD---

platypus_PepT1|XP_001506250.2 ------

chicken_PepT1|AAK39954.1 ------

turkey_PepT1|AAO16604.1 ------

western_clawed_frog_PepT1|XP_002935692.1 ------

three-spined_stickleback_PepT1a| ------

China_rockfish_PepT1a|ABV82968.1 ------

Nile_tilapia_PepT1a| ------

Japanese_medaka_PepT1a| ------

mummichog_PepT1a|AEX92274.1 ------

southern_platyfish_PepT1a| ------

torafugu_PepT1a| ------

Atlantic_cod_PepT1a| ------

zebrafish_PepT1a|XP_001919914.3 ------

Japanese_eel_PepT1a|BAM67012.1 ------

common_carp_PepT1b|AEX13747.1 ------

red_crucian_carp_PepT1b|AFI42054.1 ------

red_crucian_x_common_carp_PepT1b|AFI42056.1 ------

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 ------

grass_carp_PepT1b|AET36827.1 ------

zebrafish_PepT1b|AAQ65244.1 ------

Atlantic_cod_PepT1b|AAY17354.1 ------

Atlantic_salmon_PepT1b|BAH24102.1 ------

southern_platyfish_PepT1b| ------

mummichog_PepT1b|AEX92273.1 ------

spotted_green_pufferfish_PepT1b| ------

torafugu_PepT1b| ------

Japanese_medaka_PepT1b| ------

Antarctic_icefish_PepT1b|AAO39705.2 ------

three-spined_stickleback_PepT1b| ------

European_seabass_PepT1b|ACI49693.2 ------

white_grouper_PepT1b|AFP33141.1 ------

yellow_perch_PepT1b|ACX49753.2 ------

human_PepT1|AAB61693.1 ------

chimpanzee_PepT1|XP_522705.3 ------

Rhesus_monkey_PepT1|NP_001028071.1 ------

crab-eating_macaque_PepT1|AAQ56235.1 ------

house_mouse_PepT1|NP_444309.2 ------

Norway_rat_PepT1|BAA09318.1 ------

dog_PepT1|NP_001003036.1 ------

horse_PepT1|XP_001493109.3 GAAGMKGA------PE---MEKAVHR---R------GFAPTRLDSH-PFS-C---C---

pig_PepT1|AAO43094.1 ------

cattle_PepT1|NP_001092848.1 ------

sheep_PepT1|AAK14788.1 ------

rabbit_PepT1|AAA17721.1 ------

gray_short-tailed_opossum_PepT1|XP_001377037.2 -GAGIQTCLPFLPVPPSSHVSNSVKEILAAVL-----VLVGGDEEEI-HVS-C---L---

platypus_PepT1|XP_001506250.2 ------MAA---SKN-AAN-S---N---

chicken_PepT1|AAK39954.1 ------

turkey_PepT1|AAO16604.1 ------

western_clawed_frog_PepT1|XP_002935692.1 ------MDPSAPNRA-RADTC---PSTS

three-spined_stickleback_PepT1a| ------MEANRYTEFFTC---TDNE

China_rockfish_PepT1a|ABV82968.1 ------M---TDNE

Nile_tilapia_PepT1a| ------M---TDNE

Japanese_medaka_PepT1a| ------M---TDKE

mummichog_PepT1a|AEX92274.1 ------

southern_platyfish_PepT1a| ----MKH------SHSHLSGEKDK----VLSACGTNLKGARESEQQPHLNM---TEKD

torafugu_PepT1a| ------MD

Atlantic_cod_PepT1a| ----MKA------NYRDLARELSAIMHEQISPVEDGMKSVLPDSLHIFNAISGTPTGA

zebrafish_PepT1a|XP_001919914.3 ------MPDS

Japanese_eel_PepT1a|BAM67012.1 ------MT

common_carp_PepT1b|AEX13747.1 ------MA

red_crucian_carp_PepT1b|AFI42054.1 ------MAD

red_crucian_x_common_carp_PepT1b|AFI42056.1 ------MA

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 ------MAA

grass_carp_PepT1b|AET36827.1 ------M

zebrafish_PepT1b|AAQ65244.1 ------M

Atlantic_cod_PepT1b|AAY17354.1 ------ME

Atlantic_salmon_PepT1b|BAH24102.1 ------MT

southern_platyfish_PepT1b| ------MG

mummichog_PepT1b|AEX92273.1 ------

spotted_green_pufferfish_PepT1b| ------MA

torafugu_PepT1b| ------M

Japanese_medaka_PepT1b| ------MA

Antarctic_icefish_PepT1b|AAO39705.2 ------ME

three-spined_stickleback_PepT1b| ------MA

European_seabass_PepT1b|ACI49693.2 ------

white_grouper_PepT1b|AFP33141.1 ------MA

yellow_perch_PepT1b|ACX49753.2 ------MA

1

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human_PepT1|AAB61693.1 ------MGMSKSHSFFGYPLSIFFIVVNEFCERFSYYGMRAILILYFTNFISWDDNLSTA

chimpanzee_PepT1|XP_522705.3 ------MGMSKSHSFFGYPLSIFFIVVNEFCERFSYYGMRAILILYFTNFISWDDNLSTA

Rhesus_monkey_PepT1|NP_001028071.1 ------MGMSKSQGCFGYPLSIFFIVANEFCERFSYYGMRGILILYFTNFFSWDDNMSTA

crab-eating_macaque_PepT1|AAQ56235.1 ------MGMSKSQGCFGYPLSIFFIVANEFCERFSYYGMRGILILYFTNFFSWDDNMSTA

house_mouse_PepT1|NP_444309.2 ------MGMSKSRGCFGYPLSIFFIVVNEFCERFSYYGMRALLVLYFRNFLGWDDNLSTA

Norway_rat_PepT1|BAA09318.1 ------MGMSKSRGCFGYPLSIFFIVVNEFCERFSYYGMRALLVLYFRNFLGWDDDLSTA

dog_PepT1|NP_001003036.1 ------MGMSKSYGCFGYPLSIFFIVVNEFCERFSYYGMRALLILYFRRFIGWDDNLSTA

horse_PepT1|XP_001493109.3 SSNRSSDRMSRSQSCFGYPLSIFFIVVNEFCERFSYYGMRALLILYFTLFIGWDDNLSTA

pig_PepT1|AAO43094.1 ------MGMSVPQSCFGYPLSIFFIVVNEFCERFSYYGMRALLILYFRLFIGWNDNLSTA

cattle_PepT1|NP_001092848.1 ------MGMSVPKSCFGYPLSIFFIVVNEFCERFSYYGMRALLILYFQRFLGWNDNLGTA

sheep_PepT1|AAK14788.1 ------MGMSVPKSCFGYPLSIFFIVVNEFCERFSYYGMRALLILYFQRFLGWNDNLGTA

rabbit_PepT1|AAA17721.1 ------MGMSKSLSCFGYPLSIFFIVVNEFCERFSYYGMRALLILYFRNFIGWDDNLSTV

gray_short-tailed_opossum_PepT1|XP_001377037.2 -----DNGKKGTGSCLGYPISIFFIIVNEFCERFSYYGMRAILVLYFQRFLGWNDNLSTA

platypus_PepT1|XP_001506250.2 AFQWAFLGMSKSLSCFGYPVSIFFIIINEFCERFSYYGMRAVLVLYFQRFLGWNDNLSTA

chicken_PepT1|AAK39954.1 MAAKSKSKGRSVPNCFGYPLSIFFIVINEFCERFSYYGMRAVLVLYFKYFLRWDDNFSTA

turkey_PepT1|AAO16604.1 MAAKSKSKGSSVPNCFGYPLSIFFIVINEFCERFSYYGMRAVLVLYFKYFLRWDDNLSTA

western_clawed_frog_PepT1|XP_002935692.1 SALIQRRGEKKQPGCFGYPLSIFFIVINEFCERFSYYGMRAVLVLYFKYFLHWDDNLATV

three-spined_stickleback_PepT1a| DPKKQKGGKGTSKVLFGYPLSIFFIVVNEFCERFSYYGMRAVLVLYFKYFLRWDDDLATS

China_rockfish_PepT1a|ABV82968.1 DPKKGKDNRGTGTLVCGYPLSIFFIVVNEFCERFSYYGMRAVLVLYFKYFLRWDDDLATS

Nile_tilapia_PepT1a| DPKKQGKGNGKSKDVCGYPLSIFFIVVNEFCERFSYYGMRAVLVLYFKYFLQWDEDLATS

Japanese_medaka_PepT1a| DLKKEKKGKGKSKVVCGYPISIFFIVVNEFCERFSYYGMRAVLVLYFKYFLQWDDDLATS

mummichog_PepT1a|AEX92274.1 -----MNSKKRRVTGCGYPISIFFIVVNEFCERFSYYGMRAVLVLYFKYFLRWDDDLATS

southern_platyfish_PepT1a| DLKKESKGRGKCKEVFGYPISIFFIIVNEFCERFSYYGMRAVLVLYFKYFLRWDDDLAIS

torafugu_PepT1a| EDHKKEKKRGTDKVVCGYPLSIFFIVVNEFCERFSYYGMRAVLVLYFRYFLLWGDDLATS

Atlantic_cod_PepT1a| TIQGVPCTSSVSIVICGYPLSIFFIVVNEFCERFSYYGMRAVLVLYFKYFLRWDDDLATS

zebrafish_PepT1a|XP_001919914.3 KMDETKKKKKKTAECCGYPISIFFIVVNEFCERFSYYGMRAVLVLYFRYFLLWDDDLATS

Japanese_eel_PepT1a|BAM67012.1 DLEKREKKKPKSKVVCGYPISIFFIVVNEFCERFSYYGMRAVLVLYFRYFLRWDDDTATS

common_carp_PepT1b|AEX13747.1 DEERNTKKAKNRPSCLGYPVSIFFIVVNEFCERFSYYGMKAVLVLYFKYFIGWDNDLSTT

red_crucian_carp_PepT1b|AFI42054.1 NEERKTKKTKNRPSCLGYPVSIFFIVVNEFCERFSYYGMKAVLVLYFKYFIGWDNDLSTT

red_crucian_x_common_carp_PepT1b|AFI42056.1 NEEKNTKKAKNRPSCLGYPVSIFFIVVNEFCERFSYYGMKAVLVLYFKYFIGWDNDLSTT

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 NEERKTKKTKNRPSCLGYPVSIFFIVVNEFCERFSYYGMKAVLVLYFKYFIGWDNDLSTT

grass_carp_PepT1b|AET36827.1 ANKEGKNAREQGPSCLGYPVSIFFIVVNEFCERFSYYGMKAVLALYFKYFIGWDNDLSTT

zebrafish_PepT1b|AAQ65244.1 ADKEGHKQKKERASCFGYPVSIFFIVVNEFCERFSYYGMKAVLVLYFKYFIGWDDDLSTT

Atlantic_cod_PepT1b|AAY17354.1 DREN-GKKPKKSVTVCGYPLSIFFIVVDEFCERFSYYGMKAVLVLYFRYFLRWDDDLAIT

Atlantic_salmon_PepT1b|BAH24102.1 DI--DVKKSKRKVDVCGYPLSIFFIVVNEFCERFSYYGMRAVLVLYFRYFLKWDDDLSTS

southern_platyfish_PepT1b| DK-EKKTGKKKSVTIFGYPLSIFFIVVNEFCERFSYYGMRAVLVLYFKYFLKWDDDFSTT

mummichog_PepT1b|AEX92273.1 -----MKSKKRSVTVCGYPLSIFFIVVNEFCERFSYYGMRAVLVLYFKYFLKWDDDFSTT

spotted_green_pufferfish_PepT1b| DK---EKKKSKSKTVLDYPISIFFIVVNEFCERFSYYGMRTVLVLYLNNFLNWDEDFATT

torafugu_PepT1b| DK---ETKKPKSKTLLGYPISIFFIVVNEFCERFSYYGMRTVLVLYLNYFLNFDDDFATT

Japanese_medaka_PepT1b| DKEEHKKPKKKSPKVCGYPISIFFIVINEFCERFSYYGMRAVLVLYFKYFLRWDDDFATT

Antarctic_icefish_PepT1b|AAO39705.2 DNDETKKPTQKTAVICGYPISIFFIVVNEFCERFSYYGMRAVLVLYFKYFLKWDDDFSTT

three-spined_stickleback_PepT1b| AKDEGKDPKKKSATVCGFPISIFFIVVNEFCERFSYYGMRAVLVLYFKYFLRWDDDFATT

European_seabass_PepT1b|ACI49693.2 ---MADGKKSKSATACGYPISIFFIVVNEFCERFSYYGMRAVLVLYFKYFLRWDDDFATT

white_grouper_PepT1b|AFP33141.1 DTDEMRKPKKKSATIFGFPISIFFIVVNEFCERFSYYGMRAVLVLYFKYFLRWDDDFATT

yellow_perch_PepT1b|ACX49753.2 DK-DIKKSKKKNATVCGYPLSFFFIVVNEFCERFSYYGMRAVLVLYFKYFLRWDDDFATT

:*:*:***: :***********: :* **: *: : :: .

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human_PepT1|AAB61693.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVTSVSSINDLTDHNHDGT

chimpanzee_PepT1|XP_522705.3 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVISVSSINDLTDHNHDGT

Rhesus_monkey_PepT1|NP_001028071.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVISVSSINDLTDHNHDGT

crab-eating_macaque_PepT1|AAQ56235.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVISVSSINDLTDHNHDGT

house_mouse_PepT1|NP_444309.2 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVISVSSINDLTDHDHNGS

Norway_rat_PepT1|BAA09318.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVISVSSINDLTDHDHDGS

dog_PepT1|NP_001003036.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVTAVSSINDLTDYNKDGT

horse_PepT1|XP_001493109.3 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQVVLAVSSINDLTDGNRDGT

pig_PepT1|AAO43094.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQVVMAVSSINDLTDFDHNGT

cattle_PepT1|NP_001092848.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQVVIAVSSINDLTDFNHDGT

sheep_PepT1|AAK14788.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQVVIAVSSINDLTDFNHDGT

rabbit_PepT1|AAA17721.1 IYHTFVALCYLTPILGALIADAWLGKFKTIVWLSIVYTIGQAVTSLSSVNELTDNNHDGT

gray_short-tailed_opossum_PepT1|XP_001377037.2 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTLGQAVTAISSINDLSDNNHDGN

platypus_PepT1|XP_001506250.2 IYHTFIALCYLTPILGALIADSWLGKFKTIIYLSIVYTIGQAVTAISSINDLTDSDHDGT

chicken_PepT1|AAK39954.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVMAVSSINDMTDQNRDGN

turkey_PepT1|AAO16604.1 IYHTFVALCYLTPILGALIADSWLGKFKTIVSLSIVYTIGQAVMAISSINDMTDQNRDGN

western_clawed_frog_PepT1|XP_002935692.1 IYHTFVAICYLTPILGAIIADSWLGKFKTIVYLSIVYTVGQVVMAVSAIHDLTDGNRDGT

three-spined_stickleback_PepT1a| IYHVFVALCYLTPILGAIVADSWLGKFKTIIYLSIVYAIGQVTMAVSAIHDITDTDRDGT

China_rockfish_PepT1a|ABV82968.1 IYHVFVALCYLTPILGAIVADSWLGKFKTIIYLSIVYAIGQVAMAVSAVHDITDADRDGS

Nile_tilapia_PepT1a| IYHTFVALCYLTPILGAIVADSWLGKFKTIIYLSIVYTIGQVAMAVSAVHDITDSNRDGT

Japanese_medaka_PepT1a| IYHTFVALCYLTPILGAIVADSWLGKFKTIIYLSIVYAIGQVAMAVSAIHDITDSDRDGT

mummichog_PepT1a|AEX92274.1 FYHTFVAFCYLTPILGAIVADSWLGKFKTIIYLSIVYAIGQVAMAVSAIHDITDSNRDGT

southern_platyfish_PepT1a| IYHTFVAFCYLTPILGAIIADSWLGKFNTIIYLSIVYAIGQVAMAVSAIHDITDSDRDGS

torafugu_PepT1a| IYHTFVALCYLTPILGAIVADSWLGKYKTIIYLSIVYAIGQVAMAVSAIHDITDTNHDGK

Atlantic_cod_PepT1a| IYHAFVALCYLTPILGAIVADSWLGKFKTIIYLSIVYALGQVVMAISAIHDLTDYDWNGT

zebrafish_PepT1a|XP_001919914.3 IYHAFVALCYLTPILGAIIADSWLGKFKTIIYLSIVYAVGQVVMAVSTIHDITDANRDGT

Japanese_eel_PepT1a|BAM67012.1 IYHTFVALCYLTPIMGAIVADSWLGKFKTIVYLSIVYTIGQAVLAISAIHDITDKDQDGT

common_carp_PepT1b|AEX13747.1 IYHTFVALCYLTPILGAIIADSWLGKFKTIVYLSIVYTIGQVIMAISAIHDITDTNRDGT

red_crucian_carp_PepT1b|AFI42054.1 IYHTFVALCYLTPILGAIIADSWLGKFKTIVYLSIVYTIGQVIMAISAIHDITDTDKDGT

red_crucian_x_common_carp_PepT1b|AFI42056.1 IYHTFVALCYLTPILGAMGANSWLGKFKTIVNLSIVYTIGQVIMAIRAIHDITDTNRDGT

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 IYHTFVALCYLTPILGAIIADSWLGKFKTIVYLSIVYTIGQVIMAISAIHDITDTNKDGT

grass_carp_PepT1b|AET36827.1 IYHTFVALCYLTPIMGAIIADSWLGKFKTIVYLSIVYTIGQVIMAVSSIHDITDFNKDGV

zebrafish_PepT1b|AAQ65244.1 IYHTFVALCYLTPIMGAIIADSWLGKFKTIVYLSIVYTIGQVIMAISAIHDITDANRDGK

Atlantic_cod_PepT1b|AAY17354.1 IYHTFVALCYLTPILGAIVADSWLGKFKTIVYLSIVYTLGQVVMAISAIHDITDANKDGT

Atlantic_salmon_PepT1b|BAH24102.1 IYHTFIALCYLTPILGAIVADSWLGKFKTIVYLSIVYTVGQVVMAVSAIHDITDTDRDGT

southern_platyfish_PepT1b| IYHTFVALCYLSPILGAIIADSWLGKFKTIVYLSIVYTAGQVIMAVGAINDITDGNKDGT

mummichog_PepT1b|AEX92273.1 IYHTFVALCYLSPILGAIVADSWLGKFKTIVYLSVVYAAGQVVMAVSAIHDITDGNKDGT

spotted_green_pufferfish_PepT1b| IYHTFVALCYLTPILGAIVADSWLGKYKTIVYLSIVYAVGQVVLAVSAIHDITDTNRDGT

torafugu_PepT1b| IYHTFVALCYLTPILGAIIADSWLGKYKTIVYLSIVYTVGQVVLAVSAIHDITDANRDGI

Japanese_medaka_PepT1b| IYHTFVALCYLTPILGAIIADSWLGKFKTIVYLSIVYTLGQVVLAISAIHDITDTNKDGT

Antarctic_icefish_PepT1b|AAO39705.2 IYHTFVALCYLTPILGAIVADSWLGKFKTIVYLSIVYMLGQVVMAISAIHDLTDANMDGT

three-spined_stickleback_PepT1b| IYHTFVALCYLTPIMGAIVADSWLGKFKTIVYLSIVYTVGQVVLAVSAIHDITDTNRDGT

European_seabass_PepT1b|ACI49693.2 IYHTFVALCYLTPILGAIVADSWLGKFKTIVYLSIVYTLGQIVMAISAIHDITDSNKDGI

white_grouper_PepT1b|AFP33141.1 IYHTFVALCYLTPILGAIVADSWLGKFKTIVYLSIVYALGQVVLAVSAIHDITDANKDGT

yellow_perch_PepT1b|ACX49753.2 IYHTFVALCYLTPILGAIVADSWLGKFKTIVYLSIVYTLGQVVMAISAIRDMTDGNKDGT

:**.*:*:***:**:**: *::****::**: **:** ** :: ::.:::* : :*

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human_PepT1|AAB61693.1 PDSLPVHVVLSLIGLALIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

chimpanzee_PepT1|XP_522705.3 PDSLPVHVVLSMIGLALIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

Rhesus_monkey_PepT1|NP_001028071.1 PDSLPAHVALSMIGLALIALGTGGIKPCVSAFGGDQFEEGQEKRRNRFFSMFYLAINAGS

crab-eating_macaque_PepT1|AAQ56235.1 PDSLPVHVALSMIGLALIALGTGGIKPCVSAFGGDQFEEGQEKRRNRFFSMFYLAINAGS

house_mouse_PepT1|NP_444309.2 PDSLPVHVALSMVGLALIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINGGS

Norway_rat_PepT1|BAA09318.1 PNNLPLHVALSMIGLALIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

dog_PepT1|NP_001003036.1 PDNLSVHVALSMIGLALIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

horse_PepT1|XP_001493109.3 PDSLPVHVALSMIGLALIAFGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

pig_PepT1|AAO43094.1 PNSMSVHVALSMIGLALIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

cattle_PepT1|NP_001092848.1 PDSISVHVALSMIGLVLIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

sheep_PepT1|AAK14788.1 PNNISVHVALSMIGLVLIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

rabbit_PepT1|AAA17721.1 PDSLPVHVAVCMIGLLLIALGTGGIKPCVSAFGGDQFEEGQEKQRNRFFSIFYLAINAGS

gray_short-tailed_opossum_PepT1|XP_001377037.2 PDNIALHVSLSMIGLALIALGTGGIKPCVSAFGGDQFEEHQEKQRNRFFSIFYLAINAGS

platypus_PepT1|XP_001506250.2 PNVMSLHVALSMIGLALIALGTGGIKPCVSAFGGDQFEESQEKQRNRFFSIFYLAINAGS

chicken_PepT1|AAK39954.1 PDNIAVHIALSMTGLILIALGTGGIKPCVSAFGGDQFEEHQEKQRSRFFSIFYLSINAGS

turkey_PepT1|AAO16604.1 PDNIAVHIALSVTGLILIALGTGGIKPCVSAFGGDQFEEHQEKQRSRFFSIFYLSINAGS

western_clawed_frog_PepT1|XP_002935692.1 PDTLEVHVALSVIGLLLIALGTGGIKPCVAAFGGDQFEENQDKQRSQFFSIFYLSINAGS

three-spined_stickleback_PepT1a| PNNMTVHVVLSMLGLLLIALGTGGIKPCVAAFGGDQFSDHQEKQRRTFFSVFYLCINGGS

China_rockfish_PepT1a|ABV82968.1 PDDMTFHVVLSMVGLFLIALGTGGIKPCVAAFGGDQFADHQEKQRRTFFSVFYLCINGGS

Nile_tilapia_PepT1a| PDNMTFHVVLSMVGLFLIALGTGGIKPCVAAFGGDQFSEHQDKQRRTFFSVFYLCINGGS

Japanese_medaka_PepT1a| PNNMTFHVVLSMVGLFLIALGTGGIKPCVAAFGGDQFDDHQEKQRRTFFSVFYLCINGGS

mummichog_PepT1a|AEX92274.1 PDNLTFHVALSMVGLLLIALGTGGIKPCVAAFGGDQFGDTQEKQRRTFFSVFYLCINGGS

southern_platyfish_PepT1a| PDNLTFHIVLSMVGLLLIALGTGGIKPCVAAFGGDQFGEHQDKQRRTFFSVFYLCINGGS

torafugu_PepT1a| PDNMTFHVVLAMVGLFLIALGTGGIKPCVAAFGGDQFTDKQEKQRSTFFSVFYLCINGGS

Atlantic_cod_PepT1a| PDNMTLHVALSMVGLVLIALGTGGIKPCVAAFGGDQFQDHQERQRSTFFSVFYLCINAGS

zebrafish_PepT1a|XP_001919914.3 PDNFTLHIALSMLGLVLIALGTGGIKPCVAAFGGDQFQEHQSRQLNTFFSVFYLCINAGS

Japanese_eel_PepT1a|BAM67012.1 PNNMTFHVALSMTGLILIALGTGGIKPCVAAFGGDQFSDEQEKQRSTFFSIFYLSINAGS

common_carp_PepT1b|AEX13747.1 PDNMTFHTAMSMLGLILIALGTGGIKPCVAAFGGDQFEEHQEKQRSTFFSIFYLSINAGS

red_crucian_carp_PepT1b|AFI42054.1 PDNMTFHTAMSMLGLILIALGTGGIKPCVAAFGGDQFEEHQEEQRSTFFSIFYLSINAGS

red_crucian_x_common_carp_PepT1b|AFI42056.1 PDNMTFHTAMSMLGLILIALGTGGIKPCVAAFGGDQFEQHQEKQRNTFFSIFYLSINAGS

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 PDNMTFHTAMSMLGLILIALGTGGIKPCVAAFGGDQFEEHQEKQRSTFFSIFYLSINAGS

grass_carp_PepT1b|AET36827.1 PDNMTLHIALSTLGLILIALGTGGIKPCVAAFGGDQFEEHQEKQRSTFFSIFYLSINAGS

zebrafish_PepT1b|AAQ65244.1 PDNKTLHISLSMLGLILIALGTGGIKPCVAAFGGDQFEDHQEKQRSTFFSIFYLSINAGS

Atlantic_cod_PepT1b|AAY17354.1 PDNMTFHVALSMVGLILIALGTGGIKPCVAAFGGDQFNEHQEKQRSTFFSIFYLSINAGS

Atlantic_salmon_PepT1b|BAH24102.1 PDNMTFHVAMSMVGLFLIALGTGGIKPCVAAFGGDQFEEHQEKQRSTFFSIFYLSINAGS

southern_platyfish_PepT1b| PDNMTFHIALSMVGLLLIALGTGGIKPCVAAFGGDQFNEDQEKQRSTFFSIFYLSINAGS

mummichog_PepT1b|AEX92273.1 PDNMALHIALSMVGLLLIALGTGGIKPCVAAFGGDQFSEDQEKQRSTFFSIFYLSINAGS

spotted_green_pufferfish_PepT1b| PDNMTFHVALSMVGLVLIALGTGGIKPCVAAFGGDQFEDHQEKQRGTFFSIFYISINAGS

torafugu_PepT1b| PDNMTFHIALSMLGLILIALGTGGIKPCVAAFGGDQFEEHQDKQRSTFFSIFYLSINAGS

Japanese_medaka_PepT1b| PDNMTFHVALSMVGLLLIALGTGGIKPCVAAFGGDQFEDHQEKQRGTFFSIFYLSINAGS

Antarctic_icefish_PepT1b|AAO39705.2 PDNMTLHVALSMVGLILIALGTGGIKPCVAAFGGDQFLDHQEKQRSTFFSIFYLSINAGS

three-spined_stickleback_PepT1b| PDNMTLHIVLSMLGLALIAVGTGGIKPCVSAFGGDQFQDHQEKQRGTFFSIFYLSINAGS

European_seabass_PepT1b|ACI49693.2 PDNMTFHVALSMVGLILIALGTGGIKPCVAAFGGDQFEDHQEKQRSTFFSIFYLSINAGS

white_grouper_PepT1b|AFP33141.1 PDNMTFHIALSMVGLILIALGTGGIKPCVAAFGGDQFDDDQEKQRSTFFSIFYLSINAGS

yellow_perch_PepT1b|ACX49753.2 PDNMSIHVALSMVGLLLIALGTGGIKPCVAAFGGDQFQDHQEKQRSTFFSIFYLSINAGS

*: * :. ** ***.*********:******* : *..: ***:**:.**.**

6

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human_PepT1|AAB61693.1 LLSTIITPMLRVQQCGIHSKQACYPLAFGVPAALMAVALIVFVLGSGMYKKFKPQGNIMG

chimpanzee_PepT1|XP_522705.3 LLSTIITPMLRVQQCGIHSKQACYPLAFGVPAALMAVALIVFVLGSGMYKKFKPQGNIMG

Rhesus_monkey_PepT1|NP_001028071.1 LLSTIITPMLRVQQCGIHSKQACYPLAFGVPAALMAVALIVFILGSGMYKKFQPQGNIMG

crab-eating_macaque_PepT1|AAQ56235.1 LLSTIITPMLRVQQCGIHSKQACYPLAFGVPAALMAVALIVFILGSGMYKKFQPQGNIMG

house_mouse_PepT1|NP_444309.2 LLSTIITPILRVQQCGIHSQQACYPLAFGVPAALMAVALIVFVLGSGMYKKFQPQGNIMG

Norway_rat_PepT1|BAA09318.1 LLSTIITPILRVQQCGIHSQQACYPLAFGVPAALMAVALIVFVLGSGMYKKFQPQGNIMG

dog_PepT1|NP_001003036.1 LISTIVTPMLRVHECGIYSQKACYPLAFGVPAALMAVSLIVFVIGSGMYKKFQPQGNVMG

horse_PepT1|XP_001493109.3 LLSTIITPILRVQQCGIHSKQACYPLAFGVPAALMAVSLIVFVIGSRMYKKFQPQGNIMA

pig_PepT1|AAO43094.1 LLSTIITPMLRVQQCGIHSTQACYPLAFGVPAALMAVSLIVFVMGSRMYKKLKPQGNVMA

cattle_PepT1|NP_001092848.1 LLSTIITPMLRVQVCGIHSKQACYPLAFGVPAALMAVSLIVFVIGSGMYKKVQPQGNIMS

sheep_PepT1|AAK14788.1 LLSTIITPMLRVQVCGIHSKQACYPLAFGVPAALMAVSLIVFVIGSGMYKKVQPQGNIMS

rabbit_PepT1|AAA17721.1 LLSTIITPMVRVQQCGIHVKQACYPLAFGIPAILMAVSLIVFIIGSGMYKKFKPQGNILS

gray_short-tailed_opossum_PepT1|XP_001377037.2 LLSTIITPMLRVQQCGIHSKQACYPLAFGVPAALMAVSLIVFLIGSRMYKKVQPQGNVMA

platypus_PepT1|XP_001506250.2 LLSTIITPMLRVQECGIHSKQSCYPLAFGVPAALMAIALVVFILGSGMYKKVQPQGNIMA

chicken_PepT1|AAK39954.1 LISTIITPILRAQECGIHSRQQCYPLAFGVPAALMAVSLVVFIAGSGMYKKVQPQGNIMV

turkey_PepT1|AAO16604.1 LISTVITPILRAQECGIHSRQQCYPLAFGVPAALMAVSLIVFIAGSGMYKKVQPQGNIMV

western_clawed_frog_PepT1|XP_002935692.1 LLSTIITPILRGQECGIHSQQKCYPLAFGVPAALMVVALVVFIVGSSMYKKVSPQGNIIV

three-spined_stickleback_PepT1a| LLSTIITPILRAQDCGIYSQQKCYSLAFGVPAALMLVALVVFIAGNGMYYKAEPQGNIML

China_rockfish_PepT1a|ABV82968.1 LLSTIITPILRAQECGIYTKQKCYSLAFGVPAALMVVALVVFIVGSGMYYKAEPQGNIML

Nile_tilapia_PepT1a| LLSTIITPILRGQECGIYSQQKCYSLAFGVPAALMVVALVVFIVGSGMYYKAEPEGNIML

Japanese_medaka_PepT1a| LLSTIITPILRGQTCGIYSQQKCYALAFGVPAALMVVSLVVFIVGSGMYYKAKPEGNIML

mummichog_PepT1a|AEX92274.1 LLSTIITPILRAQECGIHSKSKCYSLAFGVPAALMVVALVVFIMGSGMYYKAKPEGNIML

southern_platyfish_PepT1a| LLSTIITPILRAQNCGIHSKSKCYSLAFGVPAALMAVSLVVFIMGSGMYYKTKPEGNIML

torafugu_PepT1a| LLSTIITPILRAQECGIHTKQECYPLAFGVPAALMVVALVVFIVGSPMYYKAKPQGNIML

Atlantic_cod_PepT1a| LLSTIITPILRAQECGIHTQQKCYSLAFGVPAALMVVALVVFIAGSGMYHKAEPQGNILL

zebrafish_PepT1a|XP_001919914.3 LLSTLITPVLRAQECGIHTQQQCYPLAFGVPAALMVVSLVVFIAGSGMYTKTAPEGNIMG

Japanese_eel_PepT1a|BAM67012.1 LLSTLITPILRAQECGIHTHQKCYPLAFGVPAALMVVALVVFIVGSKMYIKAAPKGNIML

common_carp_PepT1b|AEX13747.1 LLSTLITPILRAQECGIYSKQSCFPLAFGVPAALMVVALIVFIAGHNMYIMESPKGNILL

red_crucian_carp_PepT1b|AFI42054.1 LLSTLITPILRAQECGIYSKQSCFPLAFGVPAALMVVALIVFIAGHGMYIMESPKGNILL

red_crucian_x_common_carp_PepT1b|AFI42056.1 LLSTLITPILRAQECGIYSKQSCFPLAFGVPAALMVVALIVFIAGHNMYIMESPKGNILL

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 LLSTLITPILRAQECGIYSKQSCFPLAFGVPAALMVVALIVFIAGHNMYIMESPKGNILL

grass_carp_PepT1b|AET36827.1 LLSTLITPILRSQECGIYSKQSCFPLAFGVPAALMVVALVVFIAGHSMYIMESPKGNILL

zebrafish_PepT1b|AAQ65244.1 LLSTLITPILRSQECGIYAKQSCYPLAFGVPAALMVVALIVFVIGHKMYIMESPKGNILL

Atlantic_cod_PepT1b|AAY17354.1 LLSTIITPILRAQECGIYSQQKCYPLAFGVPAALMVVALIVFIVGSRMYTKVAPKGNIML

Atlantic_salmon_PepT1b|BAH24102.1 LLSTVITPILRGQECGIHSQQKCYPLAFGVPAALMVVALIVFIMGSGMYNKTAPKGNIML

southern_platyfish_PepT1b| LLSTIITPILRAQKCGIHTQQQCYPLAFGVPAALMVVSLIVFIVGSGMYNKTAPSGNIMV

mummichog_PepT1b|AEX92273.1 LLSTVITPILRAQKCGIHTKQQCYPLAFGVPAALMVVALIVFILGSSMYNKTAPSGNIMV

spotted_green_pufferfish_PepT1b| LLSTIITPILKAQECGIYTHQQCYPLAFGVPAALMFVALVVFIVGSPMYTKTAPQGNIMV

torafugu_PepT1b| LLSTLITPILKAQECGIHTHQQCYPLAFGVPAALMFVALAVFIVGSPLYTKTAPQGNIMV

Japanese_medaka_PepT1b| LLSTIITPILRGQECGIHTQQQCYPLAFGVPAALMAVALIVFIVGSGMYHKTAPQGNIMV

Antarctic_icefish_PepT1b|AAO39705.2 LLSTVITPILRAQECGINTKQSCYPLAFGVPAALMVVALVVFILGSRMYIKTPPQGNIMV

three-spined_stickleback_PepT1b| LLSTIITPILRGQECGIYTKQKCYSLAFGVPAGLMVASLIVFIVGSGMYIKTPPQGNIMV

European_seabass_PepT1b|ACI49693.2 LLSTVITPILRAQECGIHTQQKCYPLAFGVPAALMVVALIVFIVGSGMYNKTAPQGNIIV

white_grouper_PepT1b|AFP33141.1 LLSTVITPILRAQECGIHTQQKCYPLAFGVPAALMVVALIVFIVGSGMYTKNAPQGNILV

yellow_perch_PepT1b|ACX49753.2 LLSTIITPILRAQECGIHTQQKCYSLAFGVPAALMVVALIVFIAGSGMYTKTAPQGNILV

*:**::**::: : *** . *: ****:** ** :* **: * :* *.**::

7

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human_PepT1|AAB61693.1 KVAKCIGFAIKNRFRHRSKAFPKREHWLDWAKEKYDERLISQIKMVTRVMFLYIPLPMFW

chimpanzee_PepT1|XP_522705.3 KVAKCIGFAIKNRFRHRSKAFPKREHWLDWAKEKYDERLISQIKMVTRVMFLYIPLPMFW

Rhesus_monkey_PepT1|NP_001028071.1 KVAKCIHFAIKNRFRHRSKAFPKREHWLDWAKEKYDERLISQIKMVMRVMFLYIPLPMFW

crab-eating_macaque_PepT1|AAQ56235.1 KVAKCIHFAIKNRFRHRSKAFPKREHWLDWAKEKYDERLISQIKMVMRVMFLYIPLPMFW

house_mouse_PepT1|NP_444309.2 KVAKCIGFAIKNRFRHRSKAYPKREHWLDWAKEKYDERLISQIKMVTKVMFLYIPLPMFW

Norway_rat_PepT1|BAA09318.1 KVAKCIRFAIKNRFRHRSKAFPKRNHWLDWAKEKYDERLISQIKIMTKVMFLYIPLPMFW

dog_PepT1|NP_001003036.1 KVVKCIGFALKNRFRHRSKQFPKREHWLDWAKEKYDERLISQIKMVTKVMFLYIPLPMFW

horse_PepT1|XP_001493109.3 KVAKCIGFAITNRIRHRSNKFPKREHWLDWAKEKYDERLISQIKMVTRVMFLYIPLPMFW

pig_PepT1|AAO43094.1 KVVKCIGFAIKNRFRHRSKKFPKREHWLDWAKEKYDERLICQIKMVTRVMFLYIPLPMFW

cattle_PepT1|NP_001092848.1 KVARCIGFAIKNRIRHRSKKFPKRQHWLDWASEKYDERLISQIKMVTRVMFLYIPLPMFW

sheep_PepT1|AAK14788.1 KVARCIGFAIKNRISHRSKKFPKREHWLDWASEKYDERLISQIKMVTRVMFLYIPLPMFW

rabbit_PepT1|AAA17721.1 KVVKCICFAIKNRFRHRSKQFPKRAHWLDWAKEKYDERLIAQIKMVTRVLFLYIPLPMFW

gray_short-tailed_opossum_PepT1|XP_001377037.2 EVAKCIGFAIKNRFKHRSKEFPKREHWLDWAKEKYDERLIAQIKMVVKVMFLYIPLPMFW

platypus_PepT1|XP_001506250.2 QVAGCITFAVKNRFNHRSKTFPKREHWLDWASEKYDERLITQTKMVLKVMFLYIPLPMFW

chicken_PepT1|AAK39954.1 RVCKCIGFAIKNRFRHRSKEYPKREHWLDWASEKYDKRLIAQTKMVLKVLFLYIPLPMFW

turkey_PepT1|AAO16604.1 QVCKCIGFAIKNRFRHRSKEYPKREHWLDWASEKYDKRLIAQTKMVLKVLFLYIPLPMFW

western_clawed_frog_PepT1|XP_002935692.1 KVSKCIGFAIRNRYRNRSKSIPKREHWLDWAKEKYDERLIAQIKMVLKVLFLYIPLPMFW

three-spined_stickleback_PepT1a| DVCKCIGFAIKNRYKHRSSQYPKRQHWMDWAEDKYAKLLIAQIKMVLRVLFLYIPLPMFW

China_rockfish_PepT1a|ABV82968.1 DVCKCIGFAVKNRYRHRSEQHPKRKHWMDWE-EKYEKLLIAQIKMVLKVLFLYIPLPMFW

Nile_tilapia_PepT1a| DVCKCIGFAIKNRYRHRSKQYPKRQHWMDWAEEKYDKLLIAQIKMVLKVLFLYIPLPMFW

Japanese_medaka_PepT1a| SVCKCIGFAIKNRYRHRSKAYPKRKHWMDWAEEKYDRLLIAQIKMVLKVLFLYIPLPMFW

mummichog_PepT1a|AEX92274.1 KVSKCIGFAIKNRYKHRSSQYPKREHWMDWAEEKYDKLLIAQIKISLRVLFLYIPLPMFW

southern_platyfish_PepT1a| KVSKCIGFAIKNRYRHKSKQYPKREHWMDWAEEKYDKLLIAQIKIALRVLVLYIPLPMFW

torafugu_PepT1a| KVCKCIGFAIKNRYRHRSSNYPKREHWMDWAEDKYEKLLIAQIKMVLRVLFLYMPLPMFW

Atlantic_cod_PepT1a| DVCKCIGFAIKNRFRHRGKEFPKRTHWMDWADEKYEKLLIAQIKMVLKVLFLYIPLPMFW

zebrafish_PepT1a|XP_001919914.3 SVCKCIWFALNNRFRHRSDIYPKREHWMDWAEEKYDKLLIAQIKMVLKVLFLYIPLPMFW

Japanese_eel_PepT1a|BAM67012.1 EVSKCIGFAVKNRFRHRSDEYPKREHWMDWAEEKYERLLIAQVKMVLRVLFLYIPLPMFW

common_carp_PepT1b|AEX13747.1 QVMKCIGFAIRNRFNHRSKQHPKREHWMDWAEEEYDKLLIAQVKMVLKVLFLYIPLPMFW

red_crucian_carp_PepT1b|AFI42054.1 QVMNCIGFAVSNRFNHRGKQYPKREHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

red_crucian_x_common_carp_PepT1b|AFI42056.1 QVMKCIGFAIRNRFNHRSKQHPKREHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 QVMKCIGFAIRNRFNHRSKQHPKREHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

grass_carp_PepT1b|AET36827.1 RVMNCIIFALSNRFEHRGKQYPKREHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

zebrafish_PepT1b|AAQ65244.1 QVINCIGFALNNRFRHRGKQYPKREHWMDWAEEKYDKLLIAQVKMVVKVLFLYIPLPMFW

Atlantic_cod_PepT1b|AAY17354.1 EVCKCIWYAVKNRFRNRSSSIPKREHWMDWADEKYEKLLIAQIKMVLKVLFLYIPLPMFW

Atlantic_salmon_PepT1b|BAH24102.1 EVCKCIGFAVKNRFRHRSKKFPKREHWMDWADEKYDKLLVAQVKMVLKVMFLYIPLPMFW

southern_platyfish_PepT1b| KVCKCIFFAIMNRFHNRSSQIPKREHWLDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

mummichog_PepT1b|AEX92273.1 KVCKCIFFAIKNRFRHRSSAYPKREHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

spotted_green_pufferfish_PepT1b| KFCKCVGFAIKNRFRHRSSQYPKRAHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

torafugu_PepT1b| KVCKCIGFAIKNRFRHRASHYPKRAHWMDWAEEKYDKLLIAQVKMVLKVLFLFIPLPMFW

Japanese_medaka_PepT1b| KVTKCIGFAIKNRFRHRSSQYPKREHWMDWADEKYDKLLIAQVKMVLKVLFLYIPLPMFW

Antarctic_icefish_PepT1b|AAO39705.2 KVCTCIGFAVKNRFRHRSSHYPKREHWMDWSDEKYDKLLIAQVKMVLKVLFLYIPLPMFW

three-spined_stickleback_PepT1b| KFFTCIGFAIKNRFRHRTNEFPKRTHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

European_seabass_PepT1b|ACI49693.2 QVCKCIGFAIKNRFRHRAREHPCRTHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

white_grouper_PepT1b|AFP33141.1 KVCKCIGFAIKNRFRHRAPEYPKRTHWMDWAEEKYDKLLIAQVKMVLKVLFLYIPLPMFW

yellow_perch_PepT1b|ACX49753.2 KVCKCIGFAIKNRFRHRGSEYPKRTHWMDWAEEKYSKLLIAQVKMVVRVLFLYIPLPMFW

. *: :*: ** .: * * **:** ::* . *: * *: :*:.*::******

8

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human_PepT1|AAB61693.1 ALFDQQGSRWTLQATTMSGKIGALEIQPDQMQTVNAILIVIMVPIFDAVLYPLIAKCGFN

chimpanzee_PepT1|XP_522705.3 ALFDQQGSRWTLQATTMSGKIGALEIQPDQMQTVNAILIVIMVPIFDAVLYPLIAKCGFN

Rhesus_monkey_PepT1|NP_001028071.1 ALFDQQGSRWTLQAATMSGKIGALEIQPDQMQTVNAILIVIMVPIFDAVLYPLIAKCGLN

crab-eating_macaque_PepT1|AAQ56235.1 ALFDQQGSRWTLQAATMSGKIGALEIQPDQMQTVNAILIVIMVPIFDAVLYPLIAKCGLN

house_mouse_PepT1|NP_444309.2 ALFDQQGSRWTLQATTMNGKIGAIEIQPDQMQTVNAILIVIMVPIVDAVVYPLIAKCGFN

Norway_rat_PepT1|BAA09318.1 ALFDQQGSRWTLQATTMTGKIGTIEIQPDQMQTVNAILIVIMVPIVDAVVYPLIAKCGFN

dog_PepT1|NP_001003036.1 ALFDQQGSRWTLQATAMSGKIGLLEVQPDQMQTVNAILIVVMVPIMDAVVYPLIAKCGFN

horse_PepT1|XP_001493109.3 ALFDQQGSRWTLQATTMNGQIGVIEIQPDQMQTVNAILIVIMVPIMDAVVYPLIAKCGLN

pig_PepT1|AAO43094.1 ALFDQQGSRWTLQATTMNGQIGLLKIQPDQMQTVNAILIVIMVPIMDAVVYPLIAKCGLN

cattle_PepT1|NP_001092848.1 ALFDQQGSRWTLQATTMSGKIGIIEIQPDQMQTVNAILIVIMVPIVDAVVYPLIAKCGLN

sheep_PepT1|AAK14788.1 ALFDQQGSRWTLQATTMSGKIGIIEIQPDQMQTVNAILIVVMVPIVDAVVYPLIAKCGLN

rabbit_PepT1|AAA17721.1 ALFDQQGSRWTLQATTMSGRIGILEIQPDQMQTVNTILIIILVPIMDAVVYPLIAKCGLN

gray_short-tailed_opossum_PepT1|XP_001377037.2 ALFDQQGSRWTLQATTMNGNFGTIEIQPDQMQTVNAILIVIMVPIVDAVVYPLIAKCGFN

platypus_PepT1|XP_001506250.2 ALFDQQGSRWTLQATTMNGKFGSIEIQPDQMQTVNAILIVVMVPVVDGVIYPLIAKCGFN

chicken_PepT1|AAK39954.1 ALFDQQGSRWTLQATTMDGDFGAMQIQPDQMQTVNPILIIIMVPVVDAVIYPLIQKCKIN

turkey_PepT1|AAO16604.1 ALFDQQGSRWTLQATTMDGDFGALQIQPDQMQTVNPILIIIMVPVVDAVIYPLIQKCKIN

western_clawed_frog_PepT1|XP_002935692.1 ALFDQQGSRWTLQATTMDGNFGAIQIQPDQMQTVNPILIIVLVPIFDAAVYPLIRKCKLD

three-spined_stickleback_PepT1a| TLFDQKGSRWTLQATNLNGNFGLLVIQPDQMQTVNPILILTLVPVMDSIIYPLIRKCGAN

China_rockfish_PepT1a|ABV82968.1 TLFDQKGSRWTLQATAMDGDFGLLVIQPDQMQTVNPILILTLVPIMDSVIYPLIKKCGLN

Nile_tilapia_PepT1a| TLFDQKGSRWTLQATTMNGYFGQLVIQPDQMQTFNPILILTLVPIMDSVIYPLIKKCGFN

Japanese_medaka_PepT1a| TLFDQKGSRWTLQATTMDGNFGQLVIQPDQMQTFNPILILTLVPIMESVVYPLIKKCGFN

mummichog_PepT1a|AEX92274.1 TLFDQKGSRWTLQATTMNGHFGSIVIQPDQMQTINPILILTLVPIMDSLIYPLIRKCGLN

southern_platyfish_PepT1a| TLFDQKGSRWTLQATTMDGNFGSIVIQPDQMQTINPILILTLVPVMDSLVFPLIKKCGLN

torafugu_PepT1a| TLFDQKGSRWTLQATTMNGDYGALVIQPDQMQTFNPILILTLVPIMDSLIYPLIKKCGLN

Atlantic_cod_PepT1a| TLFDQKGSRWTFQATTMDGNFGLLVLQPDQMQTVNPILILTLVPIMDSVVYPLIRKCGLN

zebrafish_PepT1a|XP_001919914.3 TLFDQKGSRWTLQATTMTGDFGGFVLQPDQMQTVNPILILTLVPIMDRIIFPLIKKCGLN

Japanese_eel_PepT1a|BAM67012.1 ALFDQQGSRWTLQATTMDGNFGALIIQPDQMQTVNPILILVLVPIMDSAVYPLIKKCGLN

common_carp_PepT1b|AEX13747.1 ALFDQQGSRWTLQATTMDGNFGAFIIQPDQMQIVNPILIVIMVPIMDSAVYPLIKKCGLN

red_crucian_carp_PepT1b|AFI42054.1 ALFDQQGSRWTLQATTMDGNFGAFIIQPDQMQIVNPILIVIMVPIMDSVVYPLIKKCGLN

red_crucian_x_common_carp_PepT1b|AFI42056.1 ALFDQQGSRWTLQATTMDGNFGAFIIQPDQMQIVNPILIVIMVPIMDSAVYPLIKKCGLN

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 ALFDQQGSRWTLQATTMDGNFGAFIIQPDQMQIVNPILIVIMVPIMDSAVYPLIKKCGLN

grass_carp_PepT1b|AET36827.1 ALFDQQGSRWTIQATTMDGNFGAFIIQPDQMQIVNPILIVIMVPIMDSAVYPLIKMCRIN

zebrafish_PepT1b|AAQ65244.1 ALFDQQGSRWTIQATTMDGNFGGFVIQPDQMQIVNPILIVIMVPIMDSAIYPLIKLCRIN

Atlantic_cod_PepT1b|AAY17354.1 TLFDQQSSRWTLQATTMDGDFGLLVIQPDQMQTVNPILILGFVPIVDSVIYPLIAKCGLN

Atlantic_salmon_PepT1b|BAH24102.1 TLFDQQGSRWTLQATTMDGNFGILTVQPDQMQTVNPILILALVPIMDSLVYPLIKKCHLN

southern_platyfish_PepT1b| ALFDQQGSRWTLQATTMDGNFGLMVIQPDQMQTVNPILILIMVPVMDFIIYPLISKCKLN

mummichog_PepT1b|AEX92273.1 ALFDQQGSRWTLRATTMDGNFGLMVIQPDQMQTVNPILILIMVPVVDFIIYPLISKCKLN

spotted_green_pufferfish_PepT1b| ALFDQQGSRWTLQATTMDGKFGSLEIQPEHMQTVNPILILVLVPIMDTLIYPLISKCKLN

torafugu_PepT1b| ALFDQQGSRWTLQATTMDGNFGSLEIQPEQMQIVNPILILILVPIMDSIVYPLINKCKLN

Japanese_medaka_PepT1b| ALFDQQGSRWTLQATTMDGDFGALTIQPDQMQTVNPILILILVPIMDTLIYPLISKCKLN

Antarctic_icefish_PepT1b|AAO39705.2 ALFDQQGSRWTLQATIMDGDFGFLTIQPDQMQTVNPILILIMVPIMDSAIYPLIAKCNLN

three-spined_stickleback_PepT1b| ALYDQQGSRWTLQATNMDGDFGILTIQPDQMQTINAILILLLVPIVESVIYPLIAKCKIN

European_seabass_PepT1b|ACI49693.2 ALFDQQGSRWTLQATTMDGDFGALIIQPDQMQTVNPILILVLVPIMDSLVYPLISKCKLN

white_grouper_PepT1b|AFP33141.1 ALFDQQGSRWTLQATTMDGDFGLLIIQPDQMQTVNPILILVLVPIMDSLIYPLIAKCKLN

yellow_perch_PepT1b|ACX49753.2 ALFDQQGSRWTLQATTMDGNFGILTIQPDQMQTVNPILILVFVPFVDSVIYPLIAKCKLN

:*:**:.****::*: : * * : :**::** .* ***: :**..: ::*** * :

9

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human_PepT1|AAB61693.1 FTSLKKMAVGMVLASMAFVVAAIVQVEIDKTLPVFPKGNEVQIKVLNIGNNTMNISLPGE

chimpanzee_PepT1|XP_522705.3 FTSLKKMTVGMFLASMAFVVAAIVQVEIDKTLPVFPKGNEVQIKVLNIGNNTMNISLPGE

Rhesus_monkey_PepT1|NP_001028071.1 FTSLKKMTVGMFLASLAFVVAAIVQVEIDKTLPVFPKGNEIQIKVLNIGNTTMNISLPGE

crab-eating_macaque_PepT1|AAQ56235.1 FTSLKKMTVGMFLASLAFVVAAIVQVEIDKTLPVFPKGNEIQIKVLNIGNTTMNISLPGE

house_mouse_PepT1|NP_444309.2 FTSLKKMTVGMFLASMAFVVAAIVQVEIDKTLPVFPGGNQVQIKVLNIGNNNMTVHFPGN

Norway_rat_PepT1|BAA09318.1 FTSLKKMTVGMFLASMAFVVAAIVQVEIDKTLPVFPSGNQVQIKVLNIGNNDMAVYFPGK

dog_PepT1|NP_001003036.1 FTSLKRMTVGMFLASMAFVMAAIVQLEIDKTLPVFPKQNEVQIKVLNIGNGAMNVSFPGA

horse_PepT1|XP_001493109.3 FTSLKKMTVGMFLASMAFVAAAIVQVEIDKTLPVFPNGHEVQVKVLNIGNNSMNISFPGE

pig_PepT1|AAO43094.1 FTSLRKMTVGMFLASMAFVAAAIVQVEIDKTLPVFPKGNEVQVKVLNIGNNSMSVSFPGT

cattle_PepT1|NP_001092848.1 FTSLKKMTVGMFLASMAFVAAAIVQVEIDKTLPVFPKGNEVQIKVLNIGDSNMTVSFPGT

sheep_PepT1|AAK14788.1 FTSLKKMTVGMFLASMAFVAAAIVQVDIDKTLPVFPKGNEVQIKVLNIGNNSMTVSFPGT

rabbit_PepT1|AAA17721.1 FTSLKKMTIGMFLASMAFVAAAILQVEIDKTLPVFPKANEVQIKVLNVGSENMIISLPGQ

gray_short-tailed_opossum_PepT1|XP_001377037.2 FTSLKKMTVGMFLASMAFVVAAIIQLQIDKTLPVFPKGNEIQVQVLNVGNENLTAYFPGS

platypus_PepT1|XP_001506250.2 FTSLKKMTVGMFLASMAFVVAAIIQMQIDKTLPVFPTAQEFQVRVVNLGQESMNVIFPGK

chicken_PepT1|AAK39954.1 FTPLRRITVGMFLAGLAFVAAALLQVQIDKTLPVFPAAGQAQIKIINLGDSNANVTFLPN

turkey_PepT1|AAO16604.1 FTPLRKITVGMFLAGLAFIAAALVQVQIDKTLPVFPAAGQAQIRIINLGNSNANVTFLPD

western_clawed_frog_PepT1|XP_002935692.1 FTPLKRMTVGMFLAAMAFVAAALVQIEIDKTLPTFPSSNEFQLKVINLGTKDLNVTYVAN

three-spined_stickleback_PepT1a| FTPLKRMAVGMMMAAIAFVCAAVVQIEIDKTLPTFPSASQSQLKLLNMESNPVTVQLPGL

China_rockfish_PepT1a|ABV82968.1 FTPLKRMTVGMMMAAIAFVCAALVQLQIDQTLPTFPSASQSQLKLLNMGSNQVTVTLPGN

Nile_tilapia_PepT1a| FTPLKRMTVGMFLAAMAFVCAALVQVEIDKTLPVFPSASQSQLKLLNMGSSAVTVNLTGN

Japanese_medaka_PepT1a| FTPLKRMTVGMFLAALAFVCAGVVQLQIDKTLPIFPSTSESQLKLLNMGNNQLEVHLPNN

mummichog_PepT1a|AEX92274.1 FTPLKKMTVGMILAALAFVCAAMVQLQIDKTLPIFPSASQSQLKLLNMENNQLEVHLPNN

southern_platyfish_PepT1a| FTPLKKMTVGMIVAALAFVCAAVIQLQIDKTLPVFPSASQSQLKFLNMGNTQITVQFQGN

torafugu_PepT1a| FTPLKRMTVGMVLAAIAFICAALVQLEIDKTLPTFPSSSQTQIKLVNMNLNSVNVSLPGI

Atlantic_cod_PepT1a| FTPLKRMTVGMFLAAMAFVAAALVQIEIDKTLPVFPSGVQSQLKTINLGRDPMTLTLSQH

zebrafish_PepT1a|XP_001919914.3 FSPLKRMTVGMLFAATAFIAAALVQMEIDKTLPNFPSSSESQLKVVNMHSESLIVTVPSQ

Japanese_eel_PepT1a|BAM67012.1 FTPLRRMTVGMLLAGLAFVAAALVQIEIDKTLPKFPSSSESQLKFLNLGSSQLEITAATN

common_carp_PepT1b|AEX13747.1 FTPLRRMTVGMPLASLAFVAAALLQIQIDRTVPNFPSSSQTQVKFLNLENTPVPVVVEGQ

red_crucian_carp_PepT1b|AFI42054.1 FTPLRRMTVGMVLAALAFVAAALLQIQIDQTVPDFPSNSQTQVKFLNLEETSVPVIVEGQ

red_crucian_x_common_carp_PepT1b|AFI42056.1 FTPLRRMTVGMLLAALAFVAAALLQIQIDRTVPNFPSSSQTQVKFLNLENTPVPVVVEGQ

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 FTPLRRMTVGMLLAALAFVAAALLQIQIDRTVPNFPSSSQTQVKFLNLENTPVPVVVEGQ

grass_carp_PepT1b|AET36827.1 FTPLRKMTVGMLLAALAFVAAALLQIQIDQTMPQFPSSSQTQVKFLNLEKTSLPVLVEGQ

zebrafish_PepT1b|AAQ65244.1 FTPLRKMTVGMVLAALAFVAAALLQLQIDETMPKFPSTSQTQLKFLNVESTSLPVVVEGQ

Atlantic_cod_PepT1b|AAY17354.1 FTPLKRMTVGMFMAALAFIAAALVQLQIDETLPVFPASNGGQIKVFNLAGATVDVSVGGQ

Atlantic_salmon_PepT1b|BAH24102.1 FTPLKRMTVGMLIAALAFVAAALLQLQIDQTLPKLPQGVAGQVKFLNLNSAPLTLTIDGT

southern_platyfish_PepT1b| FTPLRKITVGMFLAGLAFVAAALVQLQIDATLPDFPSSTEQQAKFINMVNRSIDITAGKY

mummichog_PepT1b|AEX92273.1 FTPLRKMTGGMFLAALAFVAAALVQLQIDATLPTFPSSNEQQAKFINMVNRNLSIADGRE

spotted_green_pufferfish_PepT1b| FSPLKRMTVGMLLASVAFVAAALVQLEIDKTLPDFPAGEESQVKFVNMLNEKINFTAGDQ

torafugu_PepT1b| FSPVKRMTVGMFLAAMAFVAAALVQLQIDSTLPNFPKGQESQVKFINMLNTKIDFTAGNK

Japanese_medaka_PepT1b| FTPLRRITVGMFFAAMAFVAAAVVQLQIDKTLPKFPSNSEMQVKFINAVNREVDITAGGH

Antarctic_icefish_PepT1b|AAO39705.2 FSPLKRMTVGMLFAALAFVAAALVQLQIDQTMPIFPSSTESQVKYINMMSTPLDVRAGNN

three-spined_stickleback_PepT1b| FTPLRRITVGMFFAALAFIAAALVEIQIERTLPKFPSSPEVQVKFINMGNKSLDLTAGTN

European_seabass_PepT1b|ACI49693.2 FSPLKRMTVGMFLAALAFIAAALVQIQIDQTLPKFPSSTVGQAKFINMVNRALNINAGPN

white_grouper_PepT1b|AFP33141.1 FTPLKRMTVGMFLAALAFICAALVQIQIDKTPPQFPSSTVGQAKFINMLDRSLDVKAGTN

yellow_perch_PepT1b|ACX49753.2 FTPLKRMTVGMFLAALAFIAAALVQIQIDKTLPQFPSSTVGQAKFINMINRPLDVKAGTN

*: ::::: ** .*. **: *.:::::*: * * :* * : .*

human_PepT1|AAB61693.1 MVTL--GPMSQTNAFMTFDVNKLTRINISSPGSP-VTAVTDDFKQGQRHTLLVWA---PN

chimpanzee_PepT1|XP_522705.3 MVTL--GPMSQTNAFMTFDVNKLTSINISSPGSP-VTAVTDDFKQGQRHTLLVWA---PN

Rhesus_monkey_PepT1|NP_001028071.1 MVTL--DSLSQTNAYMTFDVNKLTSINISSPGSP-VTAVTDDFKQGQRHTLLVWA---PN

crab-eating_macaque_PepT1|AAQ56235.1 MVTL--DSLSQTNAYMTFDVNKLTSINISSPGSP-VTAVTDDFKQGQRHTLLVWA---PN

house_mouse_PepT1|NP_444309.2 SVTL--AQMSQTDTFMTFDIDKLTSINISSSGSPGVTTVAHDFEQGHRHTLLVWN---PS

Norway_rat_PepT1|BAA09318.1 NVTV--AQMSQTDTFMTFDVDQLTSINVSSPGSPGVTTVAHEFEPGHRHTLLVWG---PN

dog_PepT1|NP_001003036.1 VVTV--SQMSQSDGFMTFDVDKLTSINISSTGSP-VIPVTYNFEQGHRHTLLVWA---PN

horse_PepT1|XP_001493109.3 TMAV--NQMSQTGDFMTFDVDKL-SINISSTGSP-VTPVTHNFEQGHRHTILVWA---PN

pig_PepT1|AAO43094.1 TVTL--DQMSQTHEFLTFDVNKLTSINISSAGSP-ATPVTYNFEQGHRHTLLVWG---PS

cattle_PepT1|NP_001092848.1 TETY--NQMSQPKDFMTFNVDNL-SINISSTGSP-VTPVTHNFESGHRHTLLVWA---PS

sheep_PepT1|AAK14788.1 TVTC--DQMSQTNGFLTFNVDNL-SINISSTGTP-VTPVTHNFESGHRHTLLVWA---PS

rabbit_PepT1|AAA17721.1 TVTL--NQMSQTNEFMTFNEDTLTSINITSGSQ--VTMITPSLEAGQRHTLLVWA---PN

gray_short-tailed_opossum_PepT1|XP_001377037.2 EHRN--VSVNESSGFLTLDFNSPPNINISFGQQP-PFQVPNDFERGYRHSILAWN---SS

platypus_PepT1|XP_001506250.2 EAVA--LNLRDKTEFMKLDVNNVNYVVISTAST--IENHTIPFKEGQRQTLLLWS---PS

chicken_PepT1|AAK39954.1 LQNVTVLP-MESTGYRMFESSQLKSVMVNFGSESRSE-NIDSISSNTH-TVTIKNAAAGI

turkey_PepT1|AAO16604.1 LQNVTVLP-MESTNYRIFETSQLKSVIINFGSENRSE-SIDSTSSNTH-TVTIKNAATGI

western_clawed_frog_PepT1|XP_002935692.1 TADSALIPPFKANEYHTLEQSS--SVTFAYGTNTPQPFPLQDLAEQTRYTCVVKDDG-TA

three-spined_stickleback_PepT1a| DPL-LLPAAQASDDFFTFDTETV---GISVG-NS-STVKNITLAKGNRKTLLIT-SSIND

China_rockfish_PepT1a|ABV82968.1 DPL-LLPAAQASDEFFTFDLEII---RVSIG-SP-EETKYIPLAKEKRQTLLIP-SNIAD

Nile_tilapia_PepT1a| ESL-TLNAAQASDKYFTFETEQI---IVSVG-SP-EMTQIIFLEKKSRQTLLIP-SVISD

Japanese_medaka_PepT1a| FTV-HLPPAQASEEYFTYKEQEV---SISIG-NP-PVTETIPLVKGKRQTLLIP-PTIRE

mummichog_PepT1a|AEX92274.1 FTDLLLPAAQASDIQN----KKL---AFQQE-TL-RRPKIISLPDGTRNTIVIVEQGPAF

southern_platyfish_PepT1a| QF--NLTGAQASEEYFTFESDQI---TVSIG-NP-SVSRDVSLTKEQRQTLLIP-SAIND

torafugu_PepT1a| ETPVLLPANQASD-VFTFSDENI---TVSVG-TP-AINQTIQLTKGLRQTLLN----LNQ

Atlantic_cod_PepT1a| TV--QLAPGQAS-DYFTFDEDFV---IVSVD-NT-SISQNLTLAKGKRQSVILP-SNNTQ

zebrafish_PepT1a|XP_001919914.3 EPL-LIGSFESSPDYITFDQQDI---RLAFNTTP-EINKDLSLIKGSRQTLIIPSE--PA

Japanese_eel_PepT1a|BAM67012.1 APL-TVPPFQANPEYLPFSENEI---QVSTG-V--GFTQNIMLEKGKRQTLLINPA--TN

common_carp_PepT1b|AEX13747.1 EPF-VVPGFNSSNNYMTLDTENV---TVSAG----GRDATAYFQKESRHTVLINADRM--

red_crucian_carp_PepT1b|AFI42054.1 EPF-VVPGFDSSNDYMTLDKMVV---MVSAG----DRNATAIFVRGKRQTVLMNANGM--

red_crucian_x_common_carp_PepT1b|AFI42056.1 EPF-VAPGFNSSNNYMTLDTENV---TVSAG----GRNATAYFQKESRHTVLINADGM--

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 EPF-VVPGFNSSNNYMTLDTENV---TVSAG----GRNATAYFQKESRHTVLINADGM--

grass_carp_PepT1b|AET36827.1 EQF-FVPGFNSSNEYMTLDTMNV---TVSVG----GRNETGYFLNKMRHTVLINAGGM--

zebrafish_PepT1b|AAQ65244.1 DQF-MVPGFNASSEYLTLDKENV---TISAG----GVNDTAFLKTGTRHTVLMNAAGM--

Atlantic_cod_PepT1b|AAY17354.1 NF-TLD-PFMSNSKYLSFEGKI----NIDINKT--SMPL--VLTNGTRRSVVIDQTF--P

Atlantic_salmon_PepT1b|BAH24102.1 IDVSVPAHQVNTGDYLTFDKSV----RVVFNKNT-STGTDLILMSQTRRTALVSPTL---

southern_platyfish_PepT1b| AF-QLQ-TLQGNEEYYTYNLPF----DLTIDSGP-TETI--RLPGGTRNTIVIVEEAGRM

mummichog_PepT1b|AEX92273.1 NF-HLG-AFEGRQDYLTYTEPF----LLTINSGS-PNLI--SLPDGTRNTIVIVEQGPAF

spotted_green_pufferfish_PepT1b| PF-SME-PFTARDNYTTFTGAF----NLSLGPGN-SNEI--RFNGSTRNTLEIIQESDSP

torafugu_PepT1b| PF-SME-PFTGRDNYTSFTEPF----QLDLGPSA-SEVV--TLENGTRNTLVIIQERAAP

Japanese_medaka_PepT1b| VL-PLK-PLTATETYETFKNPF----LLTVGD-Y-EYAV--SFPKGTRNTITIVQNETEL

Antarctic_icefish_PepT1b|AAO39705.2 NF-TLK-PFTANEDYLTFGSPF----ALLLGPNA-SFPI--AIEEGNRSTSVIVQEGTRP

three-spined_stickleback_PepT1b| KV-TLE-AFTANADYLTFEQHF----DLTVGSDF-NYST--TLTPGSRNTMVIFPDTTPP

European_seabass_PepT1b|ACI49693.2 SF-TLE-SYKANEEYFNFNGPF----KLNLGSGN-AFLG--NIPAGTRATIVIIQDGTKP

white_grouper_PepT1b|AFP33141.1 EF-TLK-PYTANDDYLTFDDPF----LLNLGGNA-TYLT--GLVDGNRSTVVIVQDGPLP

yellow_perch_PepT1b|ACX49753.2 EF-TLQ-PFRANEDYLNFDDTF----ELTLRPNA-TSNI--SLENGNRSTGVIVEDWS--

. : :

human_PepT1|AAB61693.1 HYQVVKDGLNQKPEKGENGIRFVNTFNELITITMSGKVYANISSYNASTYQFFPSGIK--

chimpanzee_PepT1|XP_522705.3 HYQVVKDGLNQKPEKGENGIRFVNTFNELITITMSGKVYANISSYSASTYQFFPSGIK--

Rhesus_monkey_PepT1|NP_001028071.1 HYRVVKDDLNQKPKKGENGIRFVNTFNELITVTMSGKIYANVSSNNASNYQFFPSGVK--

crab-eating_macaque_PepT1|AAQ56235.1 HYRVVKDDLNQKPKKGENGIRFVNTFNELITVTMSGKIYANVSSNNASNYQFFPSGIK--

house_mouse_PepT1|NP_444309.2 QYRVVKDGLNQKPEKGENGIRFVNTLNEMVTIKMSGKVYENVTSHNASGYQFFPSGEK--

Norway_rat_PepT1|BAA09318.1 LYRVVKDGLNQKPEKGENGIRFVSTLNEMITIKMSGKVYENVTSHSASNYQFFPSGQK--

dog_PepT1|NP_001003036.1 NYRVVKDGLNQKPEKGENGIRFINSLNESLNITMGDKVYVNVTSHNASEYQFFSLGTK--

horse_PepT1|XP_001493109.3 HYRVIKDGLDRKPEKGQNGIRFVNAFDKSFDVTMDGTVYVNVTSHSASEYQFFPSGKK--

pig_PepT1|AAO43094.1 HYRVVKDGLNQKPEKGENGVRFVNTFDESFNVTMDGKVYIDVTSHNASAYQFFPSGAK--

cattle_PepT1|NP_001092848.1 NYQVVKDGLNQKPEKGRNGIRFVNAFGESFNVTMDGEVYNNVSSHNASEYLFFSSGVK--

sheep_PepT1|AAK14788.1 NYQVVKDGLNQKPEKGRNGIRFVNAFGESFGVTMDGEVYNNVSGHNASEYLFFSSGVK--

rabbit_PepT1|AAA17721.1 NYRVVNDGLTQKSDKGENGIRFVNTYSQPINVTMSGKVYEHIASYNASEYQFFTSGVK--

gray_short-tailed_opossum_PepT1|XP_001377037.2 YFVTLKDSLKTKPEKGLNGIRFVNNLDRTINISMDGKTYLNIAPKNASDYEFFSSGEK--

platypus_PepT1|XP_001506250.2 EFTLLENDLNKKPEKGLNGIRFINAMNKSINITVAGSNFQDVLPRNASEYEFFPSGVK--

chicken_PepT1|AAK39954.1 VSSLRSDNFTSKPEEGKNLVRFVNNLPQTVNITMGDTTFGILEETSISNYSPFSGGRT--

turkey_PepT1|AAO16604.1 VSSLRSDNFTSKPEEGKNLIRFVNNLPQTVNITMGDTDFGILEETSISNYTLFSGGRT--

western_clawed_frog_PepT1|XP_002935692.1 IQANVFEDISAKPDQGSNAIRFVNGMQEPINVTLNAVSLGQLMPLQISNYTMQKLGIK--

three-spined_stickleback_PepT1a| N-WVLTNDLISKPQEGNNEIRFINGLSTTINVSAPAADFGVIESFYYSNYSKIKTGKT--

China_rockfish_PepT1a|ABV82968.1 E-WLLTDDLTAKPEEGNNAIRFINGMNAAVNVSTPAAHFGLIESFYYSNYSQITNNYSQI

Nile_tilapia_PepT1a| E-WLLTKDLTSKPEQGNNEIRFVNGMNMPVNVTTSAVDLGLIEPFYYSNYSKIKNGEN--

Japanese_medaka_PepT1a| E-WVLIDDLTSKPEEGNNAIRFVNGLATDLNVSTAAVNFGIIEPLTSSNYSLLKNGKH--

mummichog_PepT1a|AEX92274.1 G-YITIDDLTSKPEEGNNAIRFVNGLATDINVSAPAADFGVIESFYMSIYSLLKTGTKT-

southern_platyfish_PepT1a| D-WQLAYDLIYKPQEGNNEIRFINGMSTPVNVSSAAVHYDQIEPLHYSNYSEIKNGRA--

torafugu_PepT1a| K-WALSNDLISKPEKGQNSVRFINGMNQIVNISTSEVDFGKIEPFLYSNYTLLKNGMT--

Atlantic_cod_PepT1a| E-WPMTEDLTAKPEQGANAIRFVSGT-YPLNISTGGLDFGITDGSLYSNYSLLTYGST--

zebrafish_PepT1a|XP_001919914.3 E-MYLKEDIKSKPKEGKNAVRFVNGWTAYLNITNLESS---LQPSETSNYTLVSQGMR--

Japanese_eel_PepT1a|BAM67012.1 T-MEAINDLMAKPEQGDNAIRFVNGLGTMVNVTTAAVDFGVIAPSSVSNYTLLHEGKS--

common_carp_PepT1b|AEX13747.1 --LQTLNDITEKPNQGMNAIRFVNGFRSHLNFSVKSDHLGPIAPLQASDYFSVTHGKA--

red_crucian_carp_PepT1b|AFI42054.1 --QSILNDITEKPNQGMNAIRFVNGFRSPLNFSIKSDHLGSIAYLQASDYLIVTHGKA--

red_crucian_x_common_carp_PepT1b|AFI42056.1 --LQTLNDITEKPNQGMNAIRFVNGFRSHLNFSVKSDHLGPIAPLQASDYFSVTHGKA--

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 --LQTLNDITEKPNQGMNAIRFVNGFRSHLNFSVKSDHLGHIAPLQASDYFSVTHGKA--

grass_carp_PepT1b|AET36827.1 --IQTLNDITDKPSQGGNAIRFVNGFRTQLNITVKSGDLGFLSPLEGSSYLMVPHGKA--

zebrafish_PepT1b|AAQ65244.1 --RNTLDDLTEKPEQGLNAIRFVNGWENRLNVSVKSDNVH-ADPLDASVYLLVPHGKV--

Atlantic_cod_PepT1b|AAY17354.1 N-SISYEDMTAKPEQGENAIRFLNGLGENVNVT----SLGNIPSMKMSKYALVQQGSA--

Atlantic_salmon_PepT1b|BAH24102.1 -DMNLVYDLSKKPDDGMNAIRFVNGLGSALNVTLG---VGDIAPLAVSNYSLVPQGKA--

southern_platyfish_PepT1b| TN-IKFGDVVAKPEEGANAIRFFNGFGMTLNITVGEEGFGNIVSKNMSTYVDVPQGTA--

mummichog_PepT1b|AEX92273.1 GY-ITFQDIVAKPEEGANAIRFFNGYGSVLNITVGDQEYGDIVPNNMSIFINVPQGTG--

spotted_green_pufferfish_PepT1b| HVLAAFSDINKKPEKGKNAIRVLTASARRINVTARENDFGFTVPNNMSAYQLLHSGDV--

torafugu_PepT1b| AY-ITFKDINEKPAKAANAIRIFNGFNETINVTSGEQDFGYSVPNNMSEYRLLHSGHV--

Japanese_medaka_PepT1b| GA-IPFEDITKKPEQGANAIRFFNGFDTALNVTVGDKEIGYIHPNNMSEYTSVKRGYA--

Antarctic_icefish_PepT1b|AAO39705.2 TP-ITFSDTTSKPEQGANAIRFFNGFNMTLNMTWGDQSFGNIPTNDMSTYVLIPQGVA--

three-spined_stickleback_PepT1b| KL-MPFTDINAKPEQGANAIRFFNGLDSDLNVTIGNLDFGDVSANNMSVYVGVPKGSA--

European_seabass_PepT1b|ACI49693.2 RP-TQFRDIKSKPEQGTNAIRFLNGFGSVLNATVGTLEFGNTITNNMSEYISVPQGNA--

white_grouper_PepT1b|AFP33141.1 KP-LGFVDIKTKPEQGANDIRFLNGYDSLLNVTVGDQDFGEITTNSMSKYVGVPRGPA--

yellow_perch_PepT1b|ACX49753.2 PP-VWFTDTKSKPEQGANTIRFLNGLGSDLNVTAGNLFFWVVNKNDMSNYVAVPQGLA--

* .. * :*... . . * :

human_PepT1|AAB61693.1 ----GFTISST-EIPPQCQPNFNTFYLEFGSAYTYIVQ-RKNDS---CP-EVKVFEDISA

chimpanzee_PepT1|XP_522705.3 ----GFTISST-EIPPQCQPNFNTFYLEFGSAYTYIVQ-RKNDS---CP-EVKAFEDISA

Rhesus_monkey_PepT1|NP_001028071.1 ----GFTISST-EIPPQCQSNFNTFYLEFGSAYTYLVR-RKNGS---CP-EVQSFEDISA

crab-eating_macaque_PepT1|AAQ56235.1 ----GFTISST-EIPPQCQPNFHTHYLEFGSAYTYLVR-RKNGS---CP-EVRSFEDISA

house_mouse_PepT1|NP_444309.2 ----QYTINTT-AVAPTCLTDFKSSNLDFGSAYTYVIR-RASDG---CL-EVKEFEDIPP

Norway_rat_PepT1|BAA09318.1 ----DYTINTT-EIAPNCSSDFKSSNLDFGSAYTYVIRSRASDG---CL-EVKEFEDIPP

dog_PepT1|NP_001003036.1 ----NITISSTQQISQNCTKVLQSSNLEFGSAYTYVIG-TQSTG---CP-ELHMFEDISP

horse_PepT1|XP_001493109.3 ----SFTINST-EISQQCERNFTSPRLGFGSAYTYVMG-RKADG---CP-ELSVFGDIPP

pig_PepT1|AAO43094.1 ----SFIVHSP-EISPQCKNNFTSSSLEFGSAFTYVIT-RKEDS---CP-DLKIFEDISP

cattle_PepT1|NP_001092848.1 ----SFTINSP-EISQPCGKEFKTPYLGFGSAFTYVIT-RKSDG---CP-EAKAFEDISP

sheep_PepT1|AAK14788.1 ----SFTINSP-EISQQCEKQFKTSYLEFGSAFTYVIS-RKSDG---CP-EPKIFEDISP

rabbit_PepT1|AAA17721.1 ----GFTVSSA-GISEQCRRDFESPYLEFGSAYTYLIT-SQATG---CP-QVTEFEDIPP

gray_short-tailed_opossum_PepT1|XP_001377037.2 ----TIEIKG------VCS--GKSPRLEFGSAYTYVITKCD-TN---GL-ALKTFNDIPA

platypus_PepT1|XP_001506250.2 ----TIMINDK-----QCE--GKTGKLSFGSAYTLVVTKCE-NG---ES-NIIDIEDLSP

chicken_PepT1|AAK39954.1 ----YDIVITAG--STNCK--PTSEKLGYGGAYTIVINECS-GD---VT-QLRYIEDIQP

turkey_PepT1|AAO16604.1 ----DDIVIVAD--STNCT--VTSEALGYGGAYTIIINECS-ED---VT-QLRYIEDIQP

western_clawed_frog_PepT1|XP_002935692.1 ----EIEVFTAS--GKTWK--VESIKFGFGSSYTIIIKEGN-TE----L-QVEYVEDIQP

three-spined_stickleback_PepT1a| ----IFTI-RSG--SQSCE---YSRDFGFGSSYTFFIPSTFVFG-PNCQESVTVAEDIKP

China_rockfish_PepT1a|ABV82968.1 TNKVHHTI-QSG--SQSCE---YSRDFGFGSSYTLFIPSTLIFG-QNCQESVTAAEDIKP

Nile_tilapia_PepT1a| ----KFSL-SSG--SQSCE---YIKDFGFGSSYTFFIPSTFVFG-PNCQDSITVVEDIEP

Japanese_medaka_PepT1a| ----TFSL-KSG--SQSCE---YTIKFGFGSSYTIFIPSTFTFG-PNCQESVTEVEEIKP

mummichog_PepT1a|AEX92274.1 ----IFTK-NNV--KQSCE---YSRDFGFGSSYTFFIPSTFVFG-PNCQESVTEVENIGP

southern_platyfish_PepT1a| ----TFTL-QSG--SQSCE---YSKDFGFGGSYTFFIPSTLTFE-PNCHESITESVDIKP

torafugu_PepT1a| ----NFTI-KTA--RQSCY---WTRDFGFGSSYSFFIHSNFSFE-PDCSKSITEIEYIKP

Atlantic_cod_PepT1a| ----VFTI-ESG--GESCK---YSREFGFGSSYTLIIPSSFTFG-PDCAASIGVAEDIKP

zebrafish_PepT1a|XP_001919914.3 ----KFTL-TDG--IQSCE---FSRKFGFGSSYTFLIPSDL-FS-TDC-ESIKEIEDMQP

Japanese_eel_PepT1a|BAM67012.1 ----TFTLTSEG--GQTCQ---FSKTYKFGSSYTLVIPSDIQWT-ENCGDTIKESLDIKP

common_carp_PepT1b|AEX13747.1 ----SFTIENEE--GQTCH---YILQLGFGSSYTVLIPNTFTFG-ESCTENIKAIQDINP

red_crucian_carp_PepT1b|AFI42054.1 ----NFSIVNQE--GQTCH---YILQLGFGSSYTVLISSNFTFG-ESCTENIKAVEDIEP

red_crucian_x_common_carp_PepT1b|AFI42056.1 ----SFTIENEE--GQTCH---YILQLGFGSSYTVLIPNTFTFG-ESCTENIKAVQDINP

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 ----SFTIENEE--GQTCH---YILQLGFGSSYTVLTQTPLL-W-RICTENIKAMQDINP

grass_carp_PepT1b|AET36827.1 ----NFTIGNEN--GQNCT---YIMQLGFGSSYTVLIPSTFSFG-QNCNNTITAVQDIEP

zebrafish_PepT1b|AAQ65244.1 ----NFTIFDGG--DGKCH---YIMQLGFGSTYTVLIPSTFAFG-QTCSESFEAVQDMEP

Atlantic_cod_PepT1b|AAY17354.1 ----QFDIQTVN--G-KCT---YSIAVGFGSAYTVIIPDTFTIA-D-CG-GLRPEEDIGP

Atlantic_salmon_PepT1b|BAH24102.1 ----EFTIMNSG--GASCL---YSIDLGFGSAFTLLIPSTFTIGSPDCWQAIQVVEDIQP

southern_platyfish_PepT1b| ----EFVIKNAA--GSTCA---FKREFGFGSSYTFIIPPTFILE-ENCEEHIKEVEDIKA

mummichog_PepT1b|AEX92273.1 ----KFFMKNNG--GVECV---FSRKFGFGSSYTFLIPPTFVFG-EHCGESIKEVENIKP

spotted_green_pufferfish_PepT1b| ----NYKIMTAS--GRSCV---FSQTLKYGSSYTIFIRPDIKFE-EQCTG-VHAVMDISP

torafugu_PepT1b| ----NYKIMTMD--GRSCL---FSQTLKYGSSYTLVVQPNITFE-EQCSN-ILVLMDISP

Japanese_medaka_PepT1b| ----GYWIRNDA--GLECF---VKQELGFGSSYTLLIPPTLTFE-VNCSEGVQKILDIEP

Antarctic_icefish_PepT1b|AAO39705.2 ----QYQIKNAL--GSVCD---YKQELGFGSSYTIVIPPTFNFG-STCEQILIPVVDIKP

three-spined_stickleback_PepT1b| ----QFKIKSA---AEECV---YTQELGFGSSFTLIIPPTFAFG-SNCEQSIRPVLDMEQ

European_seabass_PepT1b|ACI49693.2 ----QFHIRDNS--GQECV---YTQKLGFGSSYTLIIPPTFAFG-PNCENSIQPVVDIKP

white_grouper_PepT1b|AFP33141.1 ----KFLIKSTT--GQECV---YSQELGFGSSFTLIIPPTFTFG-QNCEQNIHPVMDIKP

yellow_perch_PepT1b|ACX49753.2 ----KFQIKNDA--GQECN---YDYNLGFGSSITFIIPTIFTFG-PDCGLSIHPVIDIKP

:*.: : . :

10 11

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human_PepT1|AAB61693.1 NTVNMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

chimpanzee_PepT1|XP_522705.3 NTVNMALQIPQYCLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

Rhesus_monkey_PepT1|NP_001028071.1 NTVNMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAIGNIIVLIV

crab-eating_macaque_PepT1|AAQ56235.1 NTVNMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAIGNIIVLIV

house_mouse_PepT1|NP_444309.2 NTVNMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

Norway_rat_PepT1|BAA09318.1 NTVNMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAIGNIIVLIV

dog_PepT1|NP_001003036.1 NTVNMALQIPQYFLITCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

horse_PepT1|XP_001493109.3 NTVNMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

pig_PepT1|AAO43094.1 NTINMALQIPQYFLITCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

cattle_PepT1|NP_001092848.1 NTVSMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

sheep_PepT1|AAK14788.1 NTVSMALQIPQYFLLTCGEVVFSITGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

rabbit_PepT1|AAA17721.1 NTMNMAWQIPQYFLITSGEVVFSITGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

gray_short-tailed_opossum_PepT1|XP_001377037.2 NTVNMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

platypus_PepT1|XP_001506250.2 NSVSMALQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

chicken_PepT1|AAK39954.1 NTVHMAWQIPQYFILTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

turkey_PepT1|AAO16604.1 NTVHMAWQIPQYFLLTCGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAFGNIIVLIV

western_clawed_frog_PepT1|XP_002935692.1 NTIHMALQIPQYFLITAGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

three-spined_stickleback_PepT1a| NSVHMALQIPQYFFITVGEVMFSVTGLEFSYSQAPSNMKAVLQAGWLLTVAVGNFIVLIV

China_rockfish_PepT1a|ABV82968.1 NSAHMALQIPQYFFITAGEVMFSVTGLEFSYSQAPSNMKAVLQAGWLFTVAIGNFIVLIV

Nile_tilapia_PepT1a| NSVHMALQIPQYFFITAGEVMFSVTGLEFSYSQAPSNMKAVLQAGWLFTVAVGNFIVLIV

Japanese_medaka_PepT1a| NSVHMALQIPQYFLITAGEVMFSVTGLEFSYSQAPSNMKAVLQAGWLLTVAVGNFIVLIV

mummichog_PepT1a|AEX92274.1 NTVHMALQIPQYFFITVGEVMFSVTGLEFSYSQAPSNMKAVLQAGWLLTVAVGNFIVLIV

southern_platyfish_PepT1a| NSVHMALQIPQYFLITAGEVMFSVTGLEFSYSQAPSNMKSVLQAGWLLTNSFGNFIVLIV

torafugu_PepT1a| NTAHMALQIPQYFFITAGEVMFSVTGLEFSYSQAPNNMKAVLQAGWLLTVAVGNFIVLIV

Atlantic_cod_PepT1a| NSVHMALQIPQYFLITAGEVVFSVTGLEFSYSQAPSNMKAVLQAGWLFTVAIGNFIVLIV

zebrafish_PepT1a|XP_001919914.3 NSVHMALQIPQYFLITTGEVMFSVTGLQFSYSQAPKNMKSVLQAGWLCTNAVGNIIVLIV

Japanese_eel_PepT1a|BAM67012.1 NTIHMAWQIPQYFLITSGEVVFSVTGLEFSYSQAPSNMKAVLQAGWLFTVAVGNIVVLIV

common_carp_PepT1b|AEX13747.1 NDIHMAWQVIQYFLMTCGEVVFSVTGLDFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

red_crucian_carp_PepT1b|AFI42054.1 NGIHMAWQIIQYFLITCGEVVFSVTGLDFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

red_crucian_x_common_carp_PepT1b|AFI42056.1 NDIHMAWQVIQYFLMTCGEVVFSVTGLDFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 NDIHMAWQVIQYFLMTCGEVVFSVTGLDFSYSQAPSNMKSVLQAGWPLTVAVGNIIVLIV

grass_carp_PepT1b|AET36827.1 NSVHMAWQIPQYVFLTAGEVMFSITGLEFSYSQAPASMKSVLQAGWLMTVAFGNVIVLIV

zebrafish_PepT1b|AAQ65244.1 NRIHMAWQVIQYFLLTCGEVVYSVTGLDFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

Atlantic_cod_PepT1b|AAY17354.1 NVVHMAWQIPQYFLMTMGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLFTVAVGNIIVLIV

Atlantic_salmon_PepT1b|BAH24102.1 NTIHMGWQIPQYFLMTGGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLFTVAVGNIIVLIV

southern_platyfish_PepT1b| NSIHMAWQIPQYFLMTSGEVVFSVTGLEFSYSQAPSNMKAVLQAGWLLTVAVGNIIVLIV

mummichog_PepT1b|AEX92273.1 NSIHMAWQIPQYFLMTSGEVFFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

spotted_green_pufferfish_PepT1b| NTVTLALQIPQYFFITAGEVVFSVTGLEFAYSQSPSNMKAVLQAGWLLTVAVGNIIVLIV

torafugu_PepT1b| NTLSLALQIPQYFLITAGEVVFSVTGLEFAYSQSPSNMKSVLQAGWLLTVAVGNIIVLII

Japanese_medaka_PepT1b| NTFSMAWQIPQYFLLTAGEVVFSVTGLEFSYSQAPSNMKAVLQAGWLLTVAFGNIIVLIV

Antarctic_icefish_PepT1b|AAO39705.2 NIIHMAWQIPQYFLMTVGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIVVLII

three-spined_stickleback_PepT1b| NSFHMAWQIPQYFLLTLGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIVVLIV

European_seabass_PepT1b|ACI49693.2 NTIHMAWQIPQYFLITAGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLLTVAVGNIIVLIV

white_grouper_PepT1b|AFP33141.1 NTIHMAWQIPQYFLITAGEVVFSVTGLEFSYSQAPSNMKSVLQAGWLFTVAVGNIIVLIV

yellow_perch_PepT1b|ACX49753.2 NTIHMAWQIPQYFLITAGEVIFSVTGLEFAYSQAPSNVKSVLQAGWLLTVAVGNIIVLIV

* :. *: ** ::* ***.:*:***:*:***:* .:*:****** * :.**.:***:

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human_PepT1|AAB61693.1 AGAGQFSKQWAEYILFAALLLVVCVIFAIMARFYTYINPAEIEAQFDEDEKKNRLEK---

chimpanzee_PepT1|XP_522705.3 AGAGQFSKQWAEYILFAALLLVVCVIFAIMARFYTYINPAEIEAQFDEDEKKNRLEK---

Rhesus_monkey_PepT1|NP_001028071.1 AGAGQFSKQWAEYILFAALLLVVCIIFAIMTRFYTYINPAEIEAQFGEDEKKKSLEN---

crab-eating_macaque_PepT1|AAQ56235.1 AGAGQFSKQWAEYILFAALLLVVCIIFAIMTRFYTYINPAEIEAQFDEDEKKKSLEN---

house_mouse_PepT1|NP_444309.2 AGAGHFPKQWAEYILFASLLLVVCVIFAIMARFYTYINPAEIEAQFDEDEKKKGIGK---

Norway_rat_PepT1|BAA09318.1 AEAGHFDKQWAEYVLFASLLLVVCIIFAIMARFYTYINPAEIEAQFDEDEKKKGVGK---

dog_PepT1|NP_001003036.1 AGAGQFSEQWAEYILFAALLLVVCVIFAIMARFYTYVNPAEIEAQFDDDEK-KNLEK---

horse_PepT1|XP_001493109.3 AGAGQFSKQWAEYILFAALLLVVCVIFGIMAQFYTYVNPAEVEAKFDDDEKKKNPEK---

pig_PepT1|AAO43094.1 AGAGQFSEQWAEYVLFAGLLLAVCIIFAIMARFYTYINPAEVEAQFDMDEKKKYLGK---

cattle_PepT1|NP_001092848.1 AGAGQFSEQWAEYVLFAALLLVVCVIFAIMARFYTYINPAEVEAQFDKDDKEDYLEK---

sheep_PepT1|AAK14788.1 AGAGQFSEQWAEYVLFAALLLVVCIIFAIMARFYTYVNPAEIEAQFDEDDKEDDLEK---

rabbit_PepT1|AAA17721.1 AGAGQINKQWAEYILFAALLLVVCVIFAIMARFYTYVNPAEIEAQFEEDEKKKNPEK---

gray_short-tailed_opossum_PepT1|XP_001377037.2 AGAGQFSEQWAEYILFAALLLAVCIIFAIMAYYYTYVNPAEIEAQFDDDEDKKRNGRKAG

platypus_PepT1|XP_001506250.2 AGAGQFSEQWVEYFLFAGLLLVVCVIFAIMAYYYQYVNPAEIEAQFDEDEKKKTGDLQPN

chicken_PepT1|AAK39954.1 AGASKLSEQWAEYVLFAALLFAVCIIFAVMAYFYTYTDPNEVEAQLDEEEKKKQIKQDPD

turkey_PepT1|AAO16604.1 AGASKLSEQWAEYVLFAALLFAVCIIFAVMAYFYTYIDPNEVEAQLDEEEKKKQIKQDPD

western_clawed_frog_PepT1|XP_002935692.1 AGASHISQQWAEYVLFAALLVAVCIIFAVMAYFYTYVDPAEIEAQFDEEEKKKNAKEIEA

three-spined_stickleback_PepT1a| AELAKLPKQWAEYILFASLLVVVCVIFSIMAHFYTYIDPAEIEAQFNKKVDEVEEEEDD-

China_rockfish_PepT1a|ABV82968.1 AEVAKIRKRWVEYVLFASLLVAVCFIFSIMAHFYTYTDPTEIEAQFRKKVDKDDEDDKS-

Nile_tilapia_PepT1a| AEIAKLPNKWAEYVLFASLLVLVCIIFSIMAYFYTYIDPSEIEVQFRKKVDDDE-DDKD-

Japanese_medaka_PepT1a| AEIAKLPKKWAEFFLFASLLVAVCVIFSIMAYFYTYIDPTEIEAQFSQEKDEEDEDEKD-

mummichog_PepT1a|AEX92274.1 AELAKFPKQWAEYFLFASLLVVVCVIFSIMAYFYTYIDPAKIEAQFKKKVDEEEEEEES-

southern_platyfish_PepT1a| AEIAKLPKQWTEYILFASLLVAVSIIFSIMASFYTYIDPTAIEAEFKKKIHDDEDDKKK-

torafugu_PepT1a| AEIAKLPEQWTEYILFASLLLVVCVIFSVMAYFYTYIDPAEIEAQFRKTTDDDEEDYKF-

Atlantic_cod_PepT1a| AELAQIPEQWAEYVLFASLLVAVCVIFSIMAHFYTYMDPAEIEAQFRKKDDDHEVRAEK-

zebrafish_PepT1a|XP_001919914.3 AELGKLPKQWAEYVLFASLLVAVSIIFSIMAYFYTYIDPAEIEAEILKQQETDPDKKKK-

Japanese_eel_PepT1a|BAM67012.1 AEAAQIPEQWAEYILFAALLIAVCVIFAVMAYFYTYVDPTEIEAQFQKDDSETEKEKEKE

common_carp_PepT1b|AEX13747.1 AEAGSLPEQWAEYVLFACLLVAVSIIFAVMAYFYTYMDPAEIEAKFMELEPDDKKRKELE

red_crucian_carp_PepT1b|AFI42054.1 AEAGSLPDQWAEYVLFACLLVAVSIIFAVMAYFYTYIDPAEIEAKFMEIKPEDEKKKGLE

red_crucian_x_common_carp_PepT1b|AFI42056.1 AEAGSLPDQWAEYVLFACLLVAVSIIFAVMAYFYTYIDPAEVEAKFMELKPEDEKKKGLE

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 AEAGSLPEQWAEYVLFACLLVAVSIIFAVMAYFYTYMDPAEIEAKFMELEPEDKKRKELE

grass_carp_PepT1b|AET36827.1 AEGA-GMEQWVEFILFAALLVAVSIIFSIMAYFYTYVDADQLDKIYGADTKDE-KVKSSD

zebrafish_PepT1b|AAQ65244.1 AEAGSLPDQWAEYLLFASLLVAVSIIFAIMAYFYTYIDPNEIEAKFKELEPEDKKRKEMQ

Atlantic_cod_PepT1b|AAY17354.1 AEVAQLPDQWAEYVLFAALLIFVCVVFSIMAYFYTYTDPAEVEARFAELEPEGKDNDRK-

Atlantic_salmon_PepT1b|BAH24102.1 AEAAQLPDQWAEYILFASLLVVVCIVFAIMSYFYTYTDPAEIEAEFRQPEHGPERKR---

southern_platyfish_PepT1b| AEAATLPDQWAEYVLFAALLVLVCIIFAIMAYFYTYIDPVQIEADFANLEPEDEK-K---

mummichog_PepT1b|AEX92273.1 AEAATLPDQWAEYILFSSLLVLVCIIFAIMAYFYTYTDPAKIEALFANPEPDDKE-K---

spotted_green_pufferfish_PepT1b| AEAATLEEQWAEYILFASLLVLVCIIFAIMAYFYTYIDPVKIESQFAHCEPEEEK-K---

torafugu_PepT1b| SQAARLEEKWAEYILFASLLVVVCVIFAIMGYFYTYIDPVKIESQFSQSESEEEK-R---

Japanese_medaka_PepT1b| AEAATLEDQWAEYILFAALLVLVCIIFAIMAYFYTYIDPAKIEAHFANMEYGEKERK---

Antarctic_icefish_PepT1b|AAO39705.2 AEAATLEDQWAEYILFASLLVLVCFIFAFMAYFYTYIDPAKIEAEFAHKEPEEEKKR---

three-spined_stickleback_PepT1b| AEAATLQDQWAEYVLFASLLLVVCVIFAIMAYFYTYIDPAKIEAEFAQIDPKQKEKR---

European_seabass_PepT1b|ACI49693.2 AEAATLPDQWAEYILFASLLILVCIIFAVMAYFYTYLDPAKIEAEFAHEEPEDKEKR---

white_grouper_PepT1b|AFP33141.1 AEAATLPDQWAEYILFASLLLLVCFIFAFMAYFYTYIDPTQEEARFTQKEPEEKERK---

yellow_perch_PepT1b|ACX49753.2 AEAATLSDQWAEYILFASLLLVVCVVFAIMAHFYTYIDPTKIEAQFAEKDPEDKEKR---

: . .:*.*:.**: **. *..:*..* :* * : :

human_PepT1|AAB61693.1 -----SNPYFM------SGA

chimpanzee_PepT1|XP_522705.3 -----SNPYFM------SGA

Rhesus_monkey_PepT1|NP_001028071.1 -----SNPYIM------LGA

crab-eating_macaque_PepT1|AAQ56235.1 -----SNPYIM------LGA

house_mouse_PepT1|NP_444309.2 -----ENPYSS------LEP

Norway_rat_PepT1|BAA09318.1 -----ENPYSS------LEP

dog_PepT1|NP_001003036.1 -----MNVYST------VTP

horse_PepT1|XP_001493109.3 -----ENPYYT------LDS

pig_PepT1|AAO43094.1 -----DSLYPK------LDT

cattle_PepT1|NP_001092848.1 -----SNPYAK------LDS

sheep_PepT1|AAK14788.1 -----SNPYAK------LDF

rabbit_PepT1|AAA17721.1 -----NDLYPS------LAP

gray_short-tailed_opossum_PepT1|XP_001377037.2 VV---SDPYEK------PDS

platypus_PepT1|XP_001506250.2 ------NQNEK------PNT

chicken_PepT1|AAK39954.1 LH---G--KES------EA-

turkey_PepT1|AAO16604.1 LY---G--KES------EA-

western_clawed_frog_PepT1|XP_002935692.1 MG---V--QNG------DGP

three-spined_stickleback_PepT1a| KSELQKLEMAKKG--SIKSH------EDEDDADKR-

China_rockfish_PepT1a|ABV82968.1 QHEKAEFEMVKKD--SFKSH------DDEDEYEHDK

Nile_tilapia_PepT1a| KQQKAEIEMVRRD--SAESY------DDNY--K---

Japanese_medaka_PepT1a| KMRKTEEHVTKRG--SVKSN------DSDNAFKLSK

mummichog_PepT1a|AEX92274.1 KLEMNAWPEIHATRSSGKQL------KRGGRLK---

southern_platyfish_PepT1a| ELQKSEFKMEKRDSVSSD------DGDKKHV---

torafugu_PepT1a| --QMAKLEMVKNDSQANSKP------DQT------

Atlantic_cod_PepT1a| KERKDSRRSQ-R--SSLEMT------EGTGS----D

zebrafish_PepT1a|XP_001919914.3 ---KETLEMEEKE------NEQ-----E

Japanese_eel_PepT1a|BAM67012.1 KHEMDSISPEK------K------QHDE-----E

common_carp_PepT1b|AEX13747.1 MMTKDNLAYVNNE------TSNNTD

red_crucian_carp_PepT1b|AFI42054.1 MMTKDNLAYVNNE------IN-SMD

red_crucian_x_common_carp_PepT1b|AFI42056.1 MMTKDNLAYVNNE------IN-SMD

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 MMTKDNLAYVDNE------TSNNTD

grass_carp_PepT1b|AET36827.1 SKNNETVAMAD------M

zebrafish_PepT1b|AAQ65244.1 MTAKDNMAYVHNE------NTN---

Atlantic_cod_PepT1b|AAY17354.1 ---RRSLELHDRKESLEEEN-QRKSR------SSSEASSHHEAPA

Atlantic_salmon_PepT1b|BAH24102.1 ----DQVEMERKDSDCSKSS------KGSDMK------KK--DSVVEQLNQE

southern_platyfish_PepT1b| ----KNLEMTKK-DMVENHDEKK------RRSS-N-EGK

mummichog_PepT1b|AEX92273.1 ----KNLEMTKK-DMAEKHERRS------SDTSSD-EED

spotted_green_pufferfish_PepT1b| ----KKRSLEM----VGHGNGFR------KRSDSSSSD-ETT

torafugu_PepT1b| ----KSLEMDHK-DRFGRRNEVR------ERSNSRL-D-EKN

Japanese_medaka_PepT1b| ----KSLEMAKK-ASFQHQDEDN------KSSDSSSDE-EEE

Antarctic_icefish_PepT1b|AAO39705.2 ----KSVDMSRK-SVDMSRKSVDMSRKSVDMSRKSVDMSRKSVDMSRKSSHSRSEK-DEE

three-spined_stickleback_PepT1b| ----RN---SRK-DSVEQHKEER------RSSDSSYD-NEE

European_seabass_PepT1b|ACI49693.2 ----KSLEMAKK-DSVEHHKEDR------RSS----DSS----SD-EEE

white_grouper_PepT1b|AFP33141.1 ----KSVEMKKK-DSVENRKEGR------KSS----DSSSDSSSD-EEE

yellow_perch_PepT1b|ACX49753.2 ----KSVEMTKK-DSVEHRNEDR------RSS----DSS----SD-EEE

human_PepT1|AAB61693.1 NSQKQM

chimpanzee_PepT1|XP_522705.3 NSQTQM

Rhesus_monkey_PepT1|NP_001028071.1 NSQTQM

crab-eating_macaque_PepT1|AAQ56235.1 NSQTQM

house_mouse_PepT1|NP_444309.2 VSQTNM

Norway_rat_PepT1|BAA09318.1 VSQTNM

dog_PepT1|NP_001003036.1 VSQTQM

horse_PepT1|XP_001493109.3 VSQTRM

pig_PepT1|AAO43094.1 DVQTQM

cattle_PepT1|NP_001092848.1 VSQTQM

sheep_PepT1|AAK14788.1 VSQTQM

rabbit_PepT1|AAA17721.1 VSQTQM

gray_short-tailed_opossum_PepT1|XP_001377037.2 FSQTAM

platypus_PepT1|XP_001506250.2 VAQTAL

chicken_PepT1|AAK39954.1 --VSQM

turkey_PepT1|AAO16604.1 --DSRM

western_clawed_frog_PepT1|XP_002935692.1 YSQTKM

three-spined_stickleback_PepT1a| ---TKM

China_rockfish_PepT1a|ABV82968.1 TKQSRM

Nile_tilapia_PepT1a| --QSKM

Japanese_medaka_PepT1a| M-----

mummichog_PepT1a|AEX92274.1 --KSTF

southern_platyfish_PepT1a| --QTSM

torafugu_PepT1a| ----KL

Atlantic_cod_PepT1a| PKENRM

zebrafish_PepT1a|XP_001919914.3 IKQTKI

Japanese_eel_PepT1a|BAM67012.1 MKQTKI

common_carp_PepT1b|AEX13747.1 VKQTKI

red_crucian_carp_PepT1b|AFI42054.1 VKQTKI

red_crucian_x_common_carp_PepT1b|AFI42056.1 VKQTKI

red_crucian_x_common_x_Japanese_crucian_carp_PepT1b|AFI42055.1 VKQTKI

grass_carp_PepT1b|AET36827.1 PKQTKM

zebrafish_PepT1b|AAQ65244.1 IKQTKI

Atlantic_cod_PepT1b|AAY17354.1 DKATNM

Atlantic_salmon_PepT1b|BAH24102.1 VKQSKM

southern_platyfish_PepT1b| IVQTNF

mummichog_PepT1b|AEX92273.1 GKQTNF

spotted_green_pufferfish_PepT1b| TRESKL

torafugu_PepT1b| TKETRM

Japanese_medaka_PepT1b| SKQSKM

Antarctic_icefish_PepT1b|AAO39705.2 TLQTKI

three-spined_stickleback_PepT1b| QKQTRI

European_seabass_PepT1b|ACI49693.2 TKQTKI

white_grouper_PepT1b|AFP33141.1 VKQTKI

yellow_perch_PepT1b|ACX49753.2 TPQTKI

Supplemental Figure 1. Alignment of vertebrate PEPT1 amino acid sequences. Multiple sequence alignment was obtained by Clustal Omega using default parameters. GenBank Acc. No. is indicated for the annotated sequences only. Putative transmembrane domains (1-to-12) are indicated according to Newstead et al. (2011) [Newstead S, Drew D, Cameron AD, Postis VL, Xia X, Fowler PW, Ingram, JC, Carpenter, EP, Sansom MS, McPherson MJ, Baldwin SA & Iwata S (2011). Crystal structure of a prokaryotic homologue of the mammalian oligopeptide-proton symporters, PepT1 and PepT2. EMBO J 30, 417-426] (#) and Solcan et al. (2012) [Solcan N, Kwok J, Fowler PW, Cameron AD, Drew D, Iwata S & Newstead S (2012). Alternating access mechanism in the POT family of oligopeptide transporters. EMBO J 31, 3411-3421] (%). The Thr-to-Ile substitution discussed in the manuscript (ref. position T327 in rabbit PEPT1 and I334 in zebrafish PEPT1) is boxed.