Table S1. Full gene list of mRNAs present in embryonic axons. Affy ID [E](raw) Gene Title Description 1389956_a_at 16250.9 Transcribed locus, moderately similar to XP_001103956.1 albumin 1375340_at 12365.09 mt-Nd2 Transcribed locus, strongly similar to NP_570949.2 specific protease 48 [Mus musculus] 1375651_at 12307.65 mt-Nd1 Transcribed locus, moderately similar to XP_001082071.1 similar to NADH-ubiquinone oxidoreductase chain 1 (NADH dehydrogenase subunit 1) 1388159_at 10121.99 mt-Co3///mt-CytbCDK110 mRNA 1375107_at 7114.216 mt-Co3///mt-Co2Transcribed locus, strongly similar to XP_001090177.1 DNA-directed RNA polymerase III 39 kDa polypeptide F isoform 2 1384548_at 5516.235 Rpl32 Ribosomal protein L32 1370242_at 5243.519 Rps23 Ribosomal protein S23 1375219_a_at 4444.669 LOC688473///Rps2///RGD1559516Ribosomal protein S2 1387890_at 4144.663 Rps29 Ribosomal protein S29 1370213_at 3975.827 Ybx1 Y box protein 1 1388481_at 3947.455 Rps28///LOC684733Similar to 40S ribosomal protein S28 1367565_a_at 3885.406 Fth1 ferritin, heavy polypeptide 1 1377114_at 3718.382 Transcribed locusEST239154 Normalized rat heart, Bento Soares Rattus sp. cDNA clone RHECZ07 3' end, . 1386852_x_at 3672.111 Ubb polyubiquitin 1370274_at 3638.481 Ubb polyubiquitin 1370866_at 3572.591 Rpl41 Ribosomal protein L41 1370886_a_at 3420.229 Klc1 Kinesin light chain 1 1371245_a_at 3390.706 LOC100134871///MGC72973///LOC689064Beta-globin 1398852_at 3328.41 Rps21 Transcribed locus, strongly similar to XP_001088137.1 similar to ribosomal protein S21 1375517_at 3309.746 Trp53inp2 Tumor protein p53 inducible nuclear protein 2 1367610_at 3135.942 Rpl19 ribosomal protein L19 1388372_at 3109.76 Rpl35 Ribosomal protein L35 1398789_at 3050.09 Rpl37 ribosomal protein L37 1388131_at 2768.213 Tubb2b tubulin, beta 2b 1367634_at 2767.515 Rpl31 ribosomal protein L31 1368028_at 2666.312 Prph peripherin 1 1375632_at 2666.195 LOC681502///LOC690833///LOC685963///LOC681221///LOC689671///Rpl38///LOC682793///LOC690468///LOC688248Similar to 60S ribosomal protein L38 1367597_at 2643.222 Rps8 ribosomal protein S8 1370751_at 2578.567 LOC257642 rRNA promoter binding protein 1371301_at 2494.81 Ehd2///Rpl9 Transcribed locus, strongly similar to XP_001106717.1 similar to ribosomal protein L9 1367583_at 2461.133 Tpt1 tumor protein, translationally-controlled 1 1398240_at 2419.898 Hspa8 heat shock protein 8 1371504_at 2393.89 LOC687187///LOC679823///LOC689401///Rpl37aRGD1561181 (predicted) 1388244_s_at 2381.342 Rpsa Ribosomal protein SA 1371344_at 2380.377 Rpl27a Similar to 60S ribosomal protein L27a (predicted) 1367845_at 2375.861 Nefm neurofilament 3, medium 1373470_at 2336.033 Ctnnb1 Catenin (cadherin associated protein), beta 1 1388303_at 2335.272 Rpl26 Transcribed locus, strongly similar to XP_001084401.1 similar to 60S ribosomal protein L26 1388296_at 2333.345 Rps18 Transcribed locus, strongly similar to XP_001090113.1 similar to ribosomal protein S18 isoform 1 1370041_at 2291.266 Stmn2 stathmin-like 2 1398324_at 2230.196 Rpl18a Similar to 60S ribosomal protein L18a 1397579_x_at 2206.636 Apc2 Transcribed locus 1375108_at 2109.767 mt-Nd3 Transcribed locus, weakly similar to NP_149938.1 dehydrogenase subunit 3 [Trichosurus vulpecula] 1398350_at 2086.374 Basp1 Brain abundant, membrane attached signal protein 1 1371297_at 2080.111 Rpl7a Transcribed locus, moderately similar to XP_001100792.1 similar to 60S ribosomal protein L7a 1398839_at 2077.773 Txn1 thioredoxin 1 1367588_a_at 1991.457 Rpl13a hexokinase 3 1367640_at 1977.742 Rps12 ribosomal protein S12 1398767_at 1938.803 Ubc ubiquitin C 1388670_at 1882.397 Kif1a Kinesin family member 1A 1372092_at 1844.9 Trak2 Trafficking protein, kinesin binding 2 1388370_at 1837.503 Ccni Cyclin I (predicted) 1371307_at 1792.599 Rplp1 Ribosomal protein, large, P1 1388110_at 1782.332 RGD1566344///Eef1a1eukaryotic translation elongation factor 1 alpha 1 1369410_at 1775.741 golgi SNAP receptor complex member 1 1371327_a_at 1766.795 LOC295810///Actg1Transcribed locus, weakly similar to XP_001112288.1 similar to actin-related protein M2 isoform 2 1398754_at 1754.881 Uba52 ubiquitin A-52 residue ribosomal protein fusion product 1 1367630_at 1741.39 Rps11 ribosomal protein S11 1370281_at 1738.508 Fabp5 fatty acid binding protein 5, epidermal 1398761_at 1729.438 Rpl5 ribosomal protein L5 1373187_at 1721.014 Transcribed locusAT005533 rat brain Rattus norvegicus cDNA clone 9-Ad-2, . 1372444_at 1718.955 Transcribed locusTranscribed locus 1367645_at 1718.048 Rps17 ribosomal protein S17 1367596_at 1716.044 Rps26 ribosomal protein S26 1398751_at 1699.74 LOC497813///Rps7ribosomal protein S7 1375181_at 1695.964 LOC499782///Rpl12_predicted///LOC685320///LOC688511Similar to 60S ribosomal protein L12 1373718_at 1671.245 Tubb2a Tubulin, beta 2b 1367930_at 1667.677 Gap43 growth associated protein 43 1398835_at 1646.764 Actb actin, beta 1370284_at 1639.192 Atp5e ATP synthase, H+ transporting, mitochondrial F1 complex, epsilon subunit 1398774_at 1603.367 Rpl30 ribosomal protein L30 1383162_at 1591.269 EST203097 Normalized rat embryo, Bento Soares Rattus sp. cDNA clone REMBB18 3' end, . 1398764_at 1578.66 Rpl21///LOC690841///LOC679852ribosomal protein L21 1371398_at 1542.106 LOC684567 Similar to ATP synthase, H+ transporting, mitochondrial F0 complex, subunit f, isoform 2 1388391_at 1529.423 Ndufa1 NADH dehydrogenase (ubiquinone) 1 alpha subcomplex, 1 (predicted) 1367623_at 1402.694 Rpl18 ribosomal protein L18 1371412_a_at 1402.368 Nrep Neuronal regeneration related protein 1367578_at 1369.736 Prdx2 peroxiredoxin 2 1388311_at 1349.386 Mrfap1 Morf4 family associated protein 1 1371313_at 1334.855 Rpl23a Transcribed locus, moderately similar to XP_001084658.1 similar to 60S ribosomal protein L23a 1371308_at 1331.875 Rps4x Ribosomal protein S4, X-linked 1367584_at 1329.952 Anxa2 annexin A2 1374426_at 1315.558 Uqcrb///LOC687741///Uqcrb_predictedUbiquinol-cytochrome c reductase binding protein (predicted) 1371321_at 1303.729 Cox6b1 Transcribed locus, strongly similar to XP_001085256.1 similar to Cytochrome c oxidase subunit VIb isoform 1 (COX VIb-1) 1377237_at 1296.7 Transcribed locusTranscribed locus 1367639_a_at 1289.388 Rps2 ribosomal protein S2 1398830_at 1288.607 Rpl28 ribosomal protein L28 1367573_at 1287.976 Rps6 ribosomal protein S6 1383161_a_at 1283.44 EST203097 Normalized rat embryo, Bento Soares Rattus sp. cDNA clone REMBB18 3' end, . 1398760_at 1277.456 Rpl35a ribosomal protein L35a 1370253_at 1275.607 Rpl22 Ribosomal protein L22 1387862_at 1273.194 Ywhaq Tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein, theta polypeptide 1367717_at 1267.794 Rps27 ribosomal protein S27 1398762_at 1255.179 Sdcbp syndecan binding protein 1371701_at 1224.88 Ndufb9 NADH dehydrogenase (ubiquinone) 1 beta subcomplex, 9 (predicted) 1370190_at 1217.543 H3f3b H3 histone, family 3B 1373977_at 1210.174 Kif5c Transcribed locus 1398885_at 1200.141 Rpl23 Ribosomal protein L23 1371318_at 1186.451 Rps16 Ribosomal protein S16 1370176_at 1183.621 Trak2 Trafficking protein, kinesin binding 2 1368211_at 1163.103 Rps14 ribosomal protein S14 1367561_at 1158.125 Rpl27 ribosomal protein L27 1367764_at 1148.912 Ccng1 cyclin G1 1388314_at 1147.412 Hmgn1 High mobility group nucleosomal binding domain 1 1398245_at 1146.822 Sncg synuclein, gamma 1382467_at 1145.741 Bex1///Bex2 Similar to brain expressed X-linked protein 2 1386921_at 1144.776 Cpe carboxypeptidase E 1367757_at 1142.137 Cox6c cytochrome c oxidase, subunit VIc 1375422_at 1128.148 UI-R-AB1-yt-f-08-0-UI.s1 UI-R-AB1 Rattus norvegicus cDNA clone UI-R-AB1-yt-f-08-0-UI 3', . 1370861_at 1124.296 Cox6a1 Cytochrome c oxidase, subunit VIa, polypeptide 1 1367606_at 1120.192 Rps3a ribosomal protein S3a 1398872_at 1111.558 LOC684988///Rps13Ribosomal protein S13 1388076_at 1097.674 Serbp1 Serpine1 mRNA binding protein 1 1371417_at 1073.285 Uqcrq Low molecular mass ubiquinone-binding protein 1375246_at 1055.75 LOC685117///Ccdc72Hypothetical protein LOC679747 1371377_at 1054.204 Rps19 Ribosomal protein S19 1371337_at 1051.047 Cox7a2l Cytochrome c oxidase subunit VIIa polypeptide 2 like (predicted) 1368097_a_at 1047.002 Rtn1 reticulon 1 1372446_at 1045.351 Ppp1r2 Protein phosphatase 1, regulatory (inhibitor) subunit 2 1398598_at 1041.098 Dst Dystonin (predicted) 1376629_at 1028.462 Transcribed locus 1388113_at 1012.096 Cox8a Cytochrome c oxidase, subunit VIIIa 1399106_at 994.0443 Myeov2 Similar to CG17059-PA 1388449_at 984.7638 Eef1b2 Eukaryotic translation elongation factor 1 beta 2 (predicted) 1367629_at 983.0917 Cox7a2 cytochrome c oxidase, subunit VIIa 2 1398315_at 972.7006 Rpl15 Ribosomal protein L15 1371300_at 972.161 Rpl3 Ribosomal protein L3 1398626_s_at 951.0516 Actr2 ARP2 actin-related protein 2 homolog (yeast) 1398753_at 941.5374 Akr1a1 aldo-keto reductase family 1, member A1 1367460_at 930.4448 Gdi2 GDP dissociation inhibitor 2 1370238_at 927.5332 Usmg5 Upregulated during skeletal muscle growth 5 1367620_at 927.1371 Atp5g3 ATP synthase, H+ transporting, mitochondrial F0 complex, subunit c (subunit 9) isoform 3 1379605_at 922.0049 Transcribed locusTranscribed locus 1367607_at 909.5524 Cox4i1 cytochrome c oxidase subunit IV isoform 1 1371295_at 906.2705 Rps20 Ribosomal protein S20 1386890_at 904.2583 S100a10 S100 calcium binding protein A10 (calpactin) 1380172_at 901.6611 Kif5c Kinesin family member 5C (predicted) 1388310_at 900.7708 Eif1 Suppressor of initiator codon mutations, related sequence 1 (S. cerevisiae) (predicted) 1398917_at 894.7798 Rpl7 Transcribed locus, moderately similar to XP_001118306.1 similar to 60S ribosomal protein