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1、常用核酸和氨基酸代码AminoAcidsTableHereisalistofthestandardone-letteraminoacidcodesandtheirthree-letterequivalents.ThesynonymouscodonsandtheirdepictionintheIUBcodesareshown.Youshouldrecognizethatthecodonsfollowingsemicolons(arenotsufficientlyspecifictodefineasingleamino
2、acideventhoughtheyrepresentthebestpossiblebacktranslationintotheIUBcodes!Symbol3-letterCodeAmino-acidCodonsAAlaAlanineGCT,GCC,GCA,GCGBAsp,AsnAspartic,AsparagineGAT,GAC,AAT,AACCCysCysteineTGT,TGCDAspAsparticGAT,GACEGluGlutamicGAA,GAGFPhePhenylalanineTTT,TTCGGly
3、GlycineGGT,GGC,GGA,GGGHHisHistidineCAT,CACIIleIsoleucineATT,ATC,ATAKLysLysineAAA,AAGLLeuLeucineTTG,TTA,CTT,CTC,CTA,CTGMMetMethionineATGNAsnAsparagineAAT,AACPProProlineCCT,CCC,CCA,CCGQGlnGlutamineCAA,CAGRArgArginineCGT,CGC,CGA,CGG,AGA,AGGSSerSerineTCT,TCC,TCA,T
4、CG,AGT,AGCTThrThreonineACT,ACC,ACA,ACGVValValineGTT,GTC,GTA,GTGWTrpTryptophanTGGXXxxUnknownYTyrTyrosineTAT,TACZGlu,GlnGlutamic,GlutamineGAA,GAG,CAA,CAG*EndTerminatorTAA,TAG,TGAStandardGeneticCodeUCAGUUUUPheFUUCPheFUUALeuLUUGLeuLUCUSerSUCCSerSUCASerSUCGSerSUAUT
5、yrYUACTyrYUAAStopUAGStopUGUCysCUGCCysCUGAStopUGGTrpWCCUULeuLCUCLeuLCUALeuLCUGLeuLCCUProPCCCProPCCAProPCCGProPCAUHisHCACHisHCAAGlnQCAGGlnQCGUArgRCGCArgRCGAArgRCGGArgRAAUUIleIAUCIleIAUAIleIAUGMetMACUThrTACCThrTACAThrTACGThrTAAUAsnNAACAsnNAAALysKAAGLysKAGUSerSAGC
6、SerSAGAArgRAGGArgRGGUUValVGUCValVGUAValVGUGValVGCUALAAGCCALAAGCAALAAGCGALAAGAUAspDGACAspDGAAGluEGAGGluEGGUGlyGGGCGlyGGGAGlyGGGGGlyGGenomeSizeandDNAContentGenomeSize(basepairsx109)CodingDNA(%)Bacterium(E.coli)0.004100Yeast(Saccharomyces)0.00970Nematode(Caenorha
7、bditis)0.0925Fruitfly(Drosophila)0.1833Newt(Triturus)19.01.5-4.5Human3.59-27Lungfish(Protopterus)140.00.4-1.2Floweringplant(Arabidopsis)0.231Floweringplant(Fritillaria)130.00.02Cavalier-Smith,T.(ed.)TheEvolutionofGenomesize(Wiley,Chichester,1985).NucleotidesTh
8、emeaningofeachsymbol(GCGfiles),itscomplement,andtheStadenfileequivalentsareshownbelow.IUB/GCGMeaningComplementAATCCGGGCT/UTAMAorCKRAorGYWAorTWSCorGSYCorTRKGorTMVAorCorGBHAorCorTDDA
