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Residue and codon codes

Purpose of this page

This web page is just a list of basic information that we all needed to know but usually forget. Rather than just repeating the same list but in a different order, if you can not find something search the page using the browser 'Find' function (i.e. Ctrl + F in Microsoft's Internet Explorer).  

DNA bases

IUPAC 1-letter codePossible residuesName
BT + C + GNot A
DA + T + GNot C
HA + T + CNot G
KT + G
MA + C
N (X)A + G + C + T a Nucleotide
RA + G puRine
SC + GStrong
VA + C + GNot T
WA + TWeak
YC + T pYrimidine

Amino acids

Amino Acid3-Letter1-LetterPolarityAcid, basic or neutralCodons
AlanineAlaAnonpolarneutralGCT, GCC, GCA, GCG
ArginineArgRpolarbasic (strongly)CGT, CGC, CGA, CGG, AGA, AGG
AsparagineAsnNpolarneutralAAT, AAC
Aspartic acidAspDpolaracidicGAT, GAC
CysteineCysCpolarneutralTGT, TGC
Glutamic acidGluEpolaracidicGAA, GAG
GlutamineGlnQpolarneutralCAA, CAG
GlycineGlyGnonpolarneutralGGT, GGC, GGA, GGG
HistidineHisHpolarbasic (weakly)CAT, CAC
IsoleucineIleInonpolarneutralATT, ATC, ATA
LeucineLeuLnonpolarneutralTTA, TTG, CTT, CTC, CTA, CTG
LysineLysKpolarbasicAAA, AAG
PhenylalaninePheFnonpolarneutralTTT, TTC
ProlineProPnonpolarneutralCCT, CCC, CCA, CCG
SerineSerSpolarneutralTCT, TCC, TCA, TCG, AGT, AGC
ThreonineThrTpolarneutralACT, ACC, ACA, ACG
TyrosineTyrYpolarneutralTAT, TAC
ValineValVnonpolarneutralGTT, GTC, GTA, GTG

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