| Hai Lui a Un Acutul Luniit Moonhiti
Total Page:16
File Type:pdf, Size:1020Kb

Load more
Recommended publications
-
(12) Patent Application Publication (10) Pub. No.: US 2014/0155567 A1 Burk Et Al
US 2014O155567A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2014/0155567 A1 Burk et al. (43) Pub. Date: Jun. 5, 2014 (54) MICROORGANISMS AND METHODS FOR (60) Provisional application No. 61/331,812, filed on May THE BIOSYNTHESIS OF BUTADENE 5, 2010. (71) Applicant: Genomatica, Inc., San Diego, CA (US) Publication Classification (72) Inventors: Mark J. Burk, San Diego, CA (US); (51) Int. Cl. Anthony P. Burgard, Bellefonte, PA CI2P 5/02 (2006.01) (US); Jun Sun, San Diego, CA (US); CSF 36/06 (2006.01) Robin E. Osterhout, San Diego, CA CD7C II/6 (2006.01) (US); Priti Pharkya, San Diego, CA (52) U.S. Cl. (US) CPC ................. CI2P5/026 (2013.01); C07C II/I6 (2013.01); C08F 136/06 (2013.01) (73) Assignee: Genomatica, Inc., San Diego, CA (US) USPC ... 526/335; 435/252.3:435/167; 435/254.2: (21) Appl. No.: 14/059,131 435/254.11: 435/252.33: 435/254.21:585/16 (22) Filed: Oct. 21, 2013 (57) ABSTRACT O O The invention provides non-naturally occurring microbial Related U.S. Application Data organisms having a butadiene pathway. The invention addi (63) Continuation of application No. 13/101,046, filed on tionally provides methods of using Such organisms to produce May 4, 2011, now Pat. No. 8,580,543. butadiene. Patent Application Publication Jun. 5, 2014 Sheet 1 of 4 US 2014/O155567 A1 ?ueudos!SMS |?un61– Patent Application Publication Jun. 5, 2014 Sheet 2 of 4 US 2014/O155567 A1 VOJ OO O Z?un61– Patent Application Publication US 2014/O155567 A1 {}}} Hººso Patent Application Publication Jun. -
Generate Metabolic Map Poster
Authors: Peter D. Karp Suzanne Paley Julio Collado-Vides John L Ingraham Ingrid Keseler Markus Krummenacker Cesar Bonavides-Martinez Robert Gunsalus An online version of this diagram is available at BioCyc.org. Biosynthetic pathways are positioned in the left of the cytoplasm, degradative pathways on the right, and reactions not assigned to any pathway are in the far right of the cytoplasm. Transporters and membrane proteins are shown on the membrane. Carol Fulcher Ian Paulsen Socorro Gama-Castro Robert LaRossa Periplasmic (where appropriate) and extracellular reactions and proteins may also be shown. Pathways are colored according to their cellular function. EcoCyc: Escherichia coli K-12 substr. MG1655 Cellular Overview Connections between pathways are omitted for legibility. Anamika Kothari Amanda Mackie Alberto Santos-Zavaleta succinate phosphate succinate N-acetyl-DL-methionine + L-ornithine glutathione + L-methionine S-oxide D-fructofuranose γ Ag+ molybdate ferroheme b L,L-homocystine asp lys cys L-alanyl- -D- D-mannopyranose 6-phosphate 2+ 2+ H D-methionine 2-deoxy-D-glucose succinate formate formate succinate D-tartrate putrescine agmatine cadaverine L-tartrate D-fructofuranose 6-phosphate + nitrate nitrate Cu thiosulfate deoxycholate L,L-homocystine D-cystine D-cycloserine methyl β-D-glucoside putrescine asp spermidine (S)-2-hydroxybutanoate (S)-2-hydroxybutanoate arg L-homoserine lactone magnesium hydrogenphosphate magnesium hydrogenphosphate antimonous acid glutamyl-meso- Co2+ Cd2+ lactulose poly-β-1,6- met cob(I)inamide 2,3-dioxo- -
Characterization of Human UMP/CMP Kinase and Its Phosphorylation of D- and 1 L-Form Deoxycytidine Analogue Monophosphates
[CANCER RESEARCH 62, 1624–1631, March 15, 2002] Characterization of Human UMP/CMP Kinase and Its Phosphorylation of D- and 1 L-Form Deoxycytidine Analogue Monophosphates Jieh-Yuan Liou, Ginger E. Dutschman, Wing Lam, Zaoli Jiang, and Yung-Chi Cheng2 Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520 ABSTRACT with leukemia, lymphoma, or solid tumors (11). Deoxycytidine ana- logues, such as -D-2Ј,3Ј-dideoxycytidine and L-(Ϫ)-SddC (Lamivu- Pyrimidine nucleoside monophosphate kinase [UMP/CMP kinase dine), have been shown to have anti-HIV and antihuman hepatitis B (UMP/CMPK); EC 2.7.4.14] plays a crucial role in the formation of UDP, virus activities (12–17). L-(Ϫ)-SddC was the first nucleoside analogue CDP, and dCDP, which are required for cellular nucleic acid synthesis. Several cytidine and deoxycytidine analogues are important anticancer with an L configuration to show therapeutic activity and, thus, defined  Ј Ј and antiviral drugs. These drugs require stepwise phosphorylation to their a new category for the design of nucleoside analogues. -L-2 ,3 - triphosphate forms to exert their therapeutic effects. The role of UMP/ dideoxy-5-fluoro-3Ј-thia-cytidine and -L-2Ј,3Ј-dideoxy-2Ј,3Ј-dide- CMPK for the phosphorylation of nucleoside analogues has been indi- hydro-5-fluorocytidine have been shown to be potent antihuman hep- cated. Thus, we cloned the human UMP/CMPK gene, expressed it in atitis B virus agents in vitro and in animal studies (18–22). In studies Escherichia coli, and purified it to homogeneity. Its kinetic properties of other -L-(Ϫ)-2Ј,3Ј-dideoxycytidine analogues, it was observed were determined. -
Saccharomyces Cerevisiae Aspartate Kinase Mechanism and Inhibition
In compliance with the Canadian Privacy Legislation some supporting forms may have been removed from this dissertation. While these forms may be included in the document page count, their removal does not represent any loss of content from the dissertation. Ph.D. Thesis - D. Bareich McMaster University - Department of Biochemistry FUNGAL ASPARTATE KINASE MECHANISM AND INHIBITION By DAVID C. BAREICH, B.Sc. A Thesis Submitted to the School of Graduate Studies in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy McMaster University © Copyright by David C. Bareich, June 2003 1 Ph.D. Thesis - D. Bareich McMaster University - Department of Biochemistry FUNGAL ASPARTATE KINASE MECHANISM AND INHIBITION Ph.D. Thesis - D. Bareich McMaster University - Department of Biochemistry DOCTOR OF PHILOSOPHY (2003) McMaster University (Biochemistry) Hamilton, Ontario TITLE: Saccharomyces cerevisiae aspartate kinase mechanism and inhibition AUTHOR: David Christopher Bareich B.Sc. (University of Waterloo) SUPERVISOR: Professor Gerard D. Wright NUMBER OF PAGES: xix, 181 11 Ph.D. Thesis - D. Bareich McMaster University - Department of Biochemistry ABSTRACT Aspartate kinase (AK) from Saccharomyces cerevisiae (AKsc) catalyzes the first step in the aspartate pathway responsible for biosynthesis of L-threonine, L-isoleucine, and L-methionine in fungi. Little was known about amino acids important for AKsc substrate binding and catalysis. Hypotheses about important amino acids were tested using site directed mutagenesis to substitute these amino acids with others having different properties. Steady state kinetic parameters and pH titrations of the variant enzymes showed AKsc-K18 and H292 to be important for binding and catalysis. Little was known about how the S. cerevisiae aspartate pathway kinases, AKsc and homoserine kinase (HSKsc), catalyze the transfer of the y-phosphate from adenosine triphosphate (ATP) to L-aspartate or L-homoserine, respectively. -
A NOVEL TWO-DOMAIN ARCHITECTURE WITHIN the AMINO ACID KINASE ENZYME FAMILY REVEALED by the CRYSTAL STRUCTURE of Escherichia Coli
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Digital.CSIC A NOVEL TWO-DOMAIN ARCHITECTURE WITHIN THE AMINO ACID KINASE ENZYME FAMILY REVEALED BY THE CRYSTAL STRUCTURE OF Escherichia coli GLUTAMATE 5-KINASE Clara Marco-Marín1, Fernando Gil-Ortiz,1 Isabel Pérez-Arellano,2 Javier Cervera,2 Ignacio Fita3 and Vicente Rubio1,* 1Instituto de Biomedicina de Valencia (IBV-CSIC) and Center for Biomedical Research on Rare Diseases (CIBERER-ISCIII), Jaume Roig 11, Valencia-46010, Spain 2Centro de Investigación Príncipe Felipe (FVIB-CSIC), Avda. Autopista del Saler 16, Valencia-46013, Spain 3Instituto de Biología Molecular de Barcelona (IBMB-CSIC). Institute for Research in Biomedicine. Parc Científic, Josep Samitier 1-5, 08028-Barcelona, Spain. Present address: F. Gil-Ortiz, Centro de Investigación Príncipe Felipe (FVIB-CSIC), Avda. Autopista del Saler 16, Valencia-46013, Spain * Corresponding author: Vicente Rubio Instituto de Biomedicina de Valencia Jaume Roig 11, Valencia-46010, Spain E-mail: [email protected] Tel. +34 963 391 772 Fax. +34 963 690 800 Short title: Structure of -glutamyl kinase of Escherichia coli 1 Summary. Glutamate 5-kinase (G5K) makes the highly unstable product glutamyl-5- phosphate (G5P) in the initial, controlling step of proline/ornithine synthesis, being feed-back inhibited by proline or ornithine, and causing, when defective, clinical hyperammonaemia. We have determined two crystal structures of G5K from Escherichia coli, at 2.9- and 2.5-Å-resolution, complexed with glutamate and sulphate, or with G5P, sulphate and the proline analog 5-oxoproline. E. coli G5K presents a novel tetrameric (dimer of dimers) architecture. -
Supplementary Informations SI2. Supplementary Table 1
Supplementary Informations SI2. Supplementary Table 1. M9, soil, and rhizosphere media composition. LB in Compound Name Exchange Reaction LB in soil LBin M9 rhizosphere H2O EX_cpd00001_e0 -15 -15 -10 O2 EX_cpd00007_e0 -15 -15 -10 Phosphate EX_cpd00009_e0 -15 -15 -10 CO2 EX_cpd00011_e0 -15 -15 0 Ammonia EX_cpd00013_e0 -7.5 -7.5 -10 L-glutamate EX_cpd00023_e0 0 -0.0283302 0 D-glucose EX_cpd00027_e0 -0.61972444 -0.04098397 0 Mn2 EX_cpd00030_e0 -15 -15 -10 Glycine EX_cpd00033_e0 -0.0068175 -0.00693094 0 Zn2 EX_cpd00034_e0 -15 -15 -10 L-alanine EX_cpd00035_e0 -0.02780553 -0.00823049 0 Succinate EX_cpd00036_e0 -0.0056245 -0.12240603 0 L-lysine EX_cpd00039_e0 0 -10 0 L-aspartate EX_cpd00041_e0 0 -0.03205557 0 Sulfate EX_cpd00048_e0 -15 -15 -10 L-arginine EX_cpd00051_e0 -0.0068175 -0.00948672 0 L-serine EX_cpd00054_e0 0 -0.01004986 0 Cu2+ EX_cpd00058_e0 -15 -15 -10 Ca2+ EX_cpd00063_e0 -15 -100 -10 L-ornithine EX_cpd00064_e0 -0.0068175 -0.00831712 0 H+ EX_cpd00067_e0 -15 -15 -10 L-tyrosine EX_cpd00069_e0 -0.0068175 -0.00233919 0 Sucrose EX_cpd00076_e0 0 -0.02049199 0 L-cysteine EX_cpd00084_e0 -0.0068175 0 0 Cl- EX_cpd00099_e0 -15 -15 -10 Glycerol EX_cpd00100_e0 0 0 -10 Biotin EX_cpd00104_e0 -15 -15 0 D-ribose EX_cpd00105_e0 -0.01862144 0 0 L-leucine EX_cpd00107_e0 -0.03596182 -0.00303228 0 D-galactose EX_cpd00108_e0 -0.25290619 -0.18317325 0 L-histidine EX_cpd00119_e0 -0.0068175 -0.00506825 0 L-proline EX_cpd00129_e0 -0.01102953 0 0 L-malate EX_cpd00130_e0 -0.03649016 -0.79413596 0 D-mannose EX_cpd00138_e0 -0.2540567 -0.05436649 0 Co2 EX_cpd00149_e0 -
Generated by SRI International Pathway Tools Version 25.0, Authors S
Authors: Pallavi Subhraveti Ron Caspi Peter Midford Peter D Karp An online version of this diagram is available at BioCyc.org. Biosynthetic pathways are positioned in the left of the cytoplasm, degradative pathways on the right, and reactions not assigned to any pathway are in the far right of the cytoplasm. Transporters and membrane proteins are shown on the membrane. Ingrid Keseler Periplasmic (where appropriate) and extracellular reactions and proteins may also be shown. Pathways are colored according to their cellular function. Gcf_000753795Cyc: Shewanella mangrovi YQH10 Cellular Overview Connections between pathways are omitted for legibility. Anamika Kothari molybdate phosphate phosphate PstC RS04785 RS08110 FtsX GspE RS18465 FliL RS02695 RS05740 ModC RsxB RS12030 SohB FliG FliM FliQ FlhF RS02410 RS02250 RS10010 RS15620 LptG RS01680 RS01605 MurJ RS02400 RS01330 RS11775 RS06520 RS11750 RS08505 FlhB RS00580 RS09545 LptC CrcB RS06405 RS14070 RS14040 FliG RS08485 RS08495 RS00745 RS15365 RS01080 MotA RS11785 RS09655 CcmD RS19200 YajC BrnQ TrkA ArsB RS02180 RS05465 NrfE FlhB FliO FliJ FliF TolR RS10365 ZipA RS06935 RS05785 RS12390 GspL RS03340 RS03595 RS06070 RS07340 RS16385 UbiB PstB PstB molybdate phosphate phosphate LolA RS14075 6 Tetrapyrrole Biosynthesis N -(3-methylbut- ditrans,octacis- a peptidoglycan with 3-phenyl-2- ditrans,octacis- ditrans,octacis- a [bis(guanylyl UDP-N-acetyl- (4R)-4-hydroxy- a [protein]-L- a [protein]-L- a [protein] Cofactor, Carrier, and Vitamin Biosynthesis a sulfurated a lipid II MoO - a uracil in DNA a -
Fullsubwaymap221.Pdf
A B C D E F G H I J K L M Aldose reductase Sorbitol dehydrogenase Cholesterol synthesis Glycogen and galactose metabolism (branch point only) (debranching) glucose sorbitol fructose Aromatic amino acid metabolism Purine synthesis Pyrimidine synthesis glycogen (n+1) phenylacetate triiodothyronine (T3) dopaquinone melanin + + thyroxine (T4) (multiple steps) (many cycles) P 4' NADPH NADP NAD NADH acetyl-CoA x2 i Debranching enzyme 3' - α-1,4 bonds Aromatic amino acid 5-phosphoribosyl pyrophosphate (PRPP) HCO B 2' P 3 (branching) Glycogen 6 i (multiple steps) O H O (multiple steps) Tyrosinase O H O 1' 2 2 2 2 B 1 2 3 4 5 6 7 8 9 10 Pentose phosphate pathway Phenylalanine Tyrosine decarboxylase 6 Dopamine B Thiolase phosphorylase -5 -4 -3 -2 -1 0 1 2 3 4 Transaminase 6 glutamine 2 ATP (many cycles) Glycogen Glucose-6-phosphatase Dehydrogenase hydroxylase hydroxylase (DOPA decarboxylase) β-hydroxylase Methyltransferase 10 UDP 4:4 Transferase ATP glutathione (reduced) H O phenyllactate phenylpyruvate phenylalanine tyrosine dihydroxy- dopamine Glutamine PRPP CoA synthase Hexokinase or (in endoplasmic reticulum) 2 2 norepinephrine epinephrine glutamine Carbamoyl 9 1' phenylanine amidotransferase (GPAT) glutamate glycogen (n) Glutathione reductase Glutathione peroxidase + phosphate glycogen (n) -5 -4 -3 -2 -1 0 1 2 3 4 2' 3' 4' glucokinase 8 NADP NADPH glutamate α-ketoglutarate CO2 O H O Glycosyl (4:6) UDP-glucose ADP (L-DOPA) 2 2 synthetase II glutathione (oxidized) 2 H O α-ketoglutarate PPi glutamate acetoacetyl-CoA 7 1 Glucose -1,6-Glucosidase -
Generated by SRI International Pathway Tools Version 25.0, Authors S
Authors: Pallavi Subhraveti Ron Caspi Peter Midford Peter D Karp An online version of this diagram is available at BioCyc.org. Biosynthetic pathways are positioned in the left of the cytoplasm, degradative pathways on the right, and reactions not assigned to any pathway are in the far right of the cytoplasm. Transporters and membrane proteins are shown on the membrane. Ingrid Keseler Periplasmic (where appropriate) and extracellular reactions and proteins may also be shown. Pathways are colored according to their cellular function. Gcf_000190595Cyc: Cellulophaga lytica DSM 7489 Cellular Overview Connections between pathways are omitted for legibility. Anamika Kothari phosphate molybdate RS04350 RS08315 phosphate molybdate Macromolecule Modification tRNA-uridine 2-thiolation inosine 5'- Nucleoside and Nucleotide Degradation ditrans,octacis- a peptidoglycan with ditrans,octacis- a [bis(guanylyl an N-terminal- a [protein] and selenation (bacteria) phosphate guanosine ditrans,octacis- (4R)-4-hydroxy- an L-asparaginyl- an L-cysteinyl- Aminoacyl-tRNA Charging tRNA charging nucleotides undecaprenyldiphospho- (L-alanyl-γ-D-glutamyl- undecaprenyldiphospho- undecaprenyldiphospho- molybdopterin) cys L-methionyl-L- C-terminal glu degradation 2-oxoglutarate [tRNA Asn ] [tRNA Cys ] degradation III N-acetyl-(N-acetyl-β-D- L-lysyl-D-alanyl-D- N-acetyl-(N- N-acetyl-(N- cofactor cysteinyl-[protein] L-glutamate cys glucosaminyl)muramoyl- alanine) pentapeptide acetylglucosaminyl) acetylglucosaminyl) chaperone]- Phe IMP bifunctional phe a tRNA L-alanyl-γ-D-glutamyl-L- -
Supplemental Figure S1. Principal Component Analysis (PCA) for the Leaf and Root Transcriptomes
Supplemental Figure S1. Principal component analysis (PCA) for the leaf and root transcriptomes. A ZT12 ZT18 ZT0 ZT6 ZT12 ZT18 ZT0 ZT6 → → → Pattern 1 ↗ ↘ ↗ ↘ ↘ ↘ ↘ → → → Pattern 2 ↗ ↘ ↗ ↘ ↘ ↘ ↘ → → → → Pattern 3 ↗ ↘ ↗ ↘ ↘ ↘ ↘ → → → → Pattern 4 ↘ ↗ ↘ ↘ ↘ ↘ ↘ ↗ → ↗ Pattern 5 ↗ ↘ ↗ ↘ → ↘ → → ↗ → ↗ Pattern 6 ↗ ↘ ↗ ↘ → ↘ → → ↗ → Pattern 7 ↘ ↗ ↘ ↗ ↘ → ↘ ↗ → ↗ → Pattern 8 ↘ ↗ ↘ → ↘ → ↘ ↗ ↗ ↗ ↗ Pattern 9 ↗ ↘ ↗ → → → → ↗ ↗ ↗ Pattern 10 ↘ ↗ ↘ ↗ → → → ↗ ↗ ↗ Pattern 11 ↘ ↗ ↘ ↗ → → → ↗ ↗ ↗ ↗ Pattern 12 ↘ ↗ ↘ → → → → Supplemental Figure S2. The 12 different diurnal patterns set for this study (A) and gene expression variations in the leaves (B) and roots (C). (B, C) The shaded areas show nighttime. The data points indicate the average of expression levels of five replicates. Figure S2 continued B Leaf - Pattern 1 Leaf - Pattern 2 Leaf - Pattern 3 400 2500 1200 350 1000 2000 300 800 250 1500 200 600 1000 150 400 100 Expression Level Level (TPM) Expression Expression Level Level Expression (TPM) 500 Expression Level Level (TPM) Expression 200 50 0 0 0 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 ZT ZT ZT Leaf - Pattern 4 Leaf - Pattern 5 Leaf - Pattern 6 3000 6000 20000 18000 2500 5000 16000 14000 2000 4000 12000 1500 3000 10000 8000 1000 2000 6000 Expression Level Level (TPM) Expression 4000 Expression Level Level Expression (TPM) 500 Level Expression (TPM) 1000 2000 0 0 0 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 ZT ZT ZT Leaf - Pattern 7 Leaf - Pattern 8 Leaf - Pattern 9 4500 400 2500 4000 350 2000 3500 300 3000 250 -
R Graphics Output
Figure S1. Multidimensional scaling analysis of the RNA-seq experiments. Samples are projected on the two first dimensions according to their gene expression profiles. Closeness between samples on the grid indicates a strong similarity. Figure S2. Similar tissue type are strongly correlated. Spearman's rho correlation was measured to check biological replicate homogeneity. Higher rho values indicate stronger similarities between pairs of samples. −log10(Pval) ● 5● 10● 15● 20 OL vs AR YL vs OL YL+YS+OL vs AR copper ion transport ● microtubule−based movement ● cyanate catabolic process ● establishment of protein localization ● DNA unwinding involved in DNA replication ● intracellular distribution of mitochondria ● regulation of root development ● DNA methylation on cytosine within a CG sequence ● carbon utilization ● glutamine biosynthetic process ● maintenance of DNA methylation ● photosystem II assembly ● response to singlet oxygen ● DNA replication initiation ● chlorophyll biosynthetic process ● specification of plant organ axis polarity ● mitotic cell cycle ● reductive pentose−phosphate cycle ● cellular response to nitrogen starvation ● double−strand break repair via homologous recombination ● photosynthesis, light harvesting in photosystem I ● cellular manganese ion homeostasis ● mitotic cell cycle phase transition ● protein−chromophore linkage ● cellular zinc ion homeostasis ● regulation of cyclin−dependent protein serine/threonine kinase activity ● response to light stimulus ● recognition of pollen ● cell division ● photosynthesis -
Exchange of Nucleoside Monophosphate-Binding Domains in Adenylate Kinase and UMP/CMP Kinase1
J. Biochem. 124, 359-367 (1998) Exchange of Nucleoside Monophosphate-Binding Domains in Adenylate Kinase and UMP/CMP Kinase1 Toshihide Okajima,*"z Tamo Fukamizo,* Sachio Goto,* Toshio Fukui,t and Katsuyuki Tanizawa•õ *Faculty of Agriculture , Kinki University, 3327-204 Nakamachi, Nara 631-8505; and •õInstitute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047 Received for publication, March 6, 1998 Two types of active chimeric enzymes have been constructed by genetic engineering of chicken cytosolic adenylate kinase (AK) and porcine brain UMP/CMP kinase (UCK): one, designated as UAU, carries an AMP-binding domain of AK in the remaining body of UCK; and the other, designated as AUA, carries a UMP/CMP-binding domain of UCK in the remaining body of AK. Steady-state kinetic analysis of these chimeric enzymes revealed that UAU is 4-fold more active for AMP, 40-fold less active for UMP, and 4-fold less active for CMP than the parental UCK, although AUA has considerably lowered reactivity for both AMP and UMP. Circular dichroism spectra of the two chimeric enzymes suggest that UAU and AUA have similar folding structures to UCK and AK, respectively. Furthermore, proton NMR measurements of the UCK and UAU proteins indicate that significant differ ences in proton signals are limited to the aromatic region, where an imidazole C2H signal assigned to His31 shows a downfield shift upon conversion of UCK to UAU, and the signals assigned to Tyr49 and Tyr56 in the UMP/CMP-binding domain disappear in UAU. In contrast, AUA has a Tm value about 11•Ž lower than AK, whereas UAU and UCK have similar Tm values.