Amino Acids and their Genetic Codes


Biology>Common topics>Amino acids and genetic codes
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The table below displays the 20 main amino acids together with their canonical genetic codes, isoelectric points, molecular weights and other information.
Shown are the so-called standard codons, for organism or organelle specific codon usage and distribution see the Codon Usage Database at the Kazusa DNA Research Institute, Chiba, Japan.
While information about amino acids on the WWW is vast, this site and its layout is aimed at facilitating a print-out of the standard amino acids in a tabular form, whereby this text should not appear.
A comprehensive introduction to amino acid chemistry, peptides and proteins is for example provided by William Reusch of the Michigian State University and can be found e.g. at Proteins, Peptides & Amino Acids.
A German version of this page can be found at Aminosäuren und ihr genetischer Code.


NameOne Letter
Code
Three Letter
Code
Chemical FormulaMolecular Weight
(Da)
Density
(g × cm-3)
IEP
(Isoelectric Point)
(pH)
Average Frequency
of Appearance
in Proteins
(%)
Solubility
(g/l H2O,
20° C)
Genetic
Codons
Chemical
Classification
GlycineGGlyGlycine75.071.605.977.5225GGA
GGC
GGG
GGU
non-polar side-chains
neutral
L-AlanineAAlaAlanine89.091.4246.009.0160GCA
GCC
GCG
GCU
L-ValineVValValine117.141.235.966.956.1GUA
GUC
GUG
GUU
L-LeucineLLeuLeucine131.171.295.987.522.4UUA
UUG
CUA
CUC
CUG
CUU
L-IsoleucineIIleIsoleucine131.171.045.944.632.1AUA
AUC
AUU
L-MethionineMMetMethionine149.211.345.741.753.7AUG
L-ProlinePProProline115.131.366.304.61550CCA
CCC
CCG
CCU
L-PhenylalanineFPhePhenylalanine165.191.205.483.525.1UUC
UUU
L-TryptophanWTrpTryptophan204.221.365.891.110.6UGG
L-SerineSSerSerine105.91.425.687.1360AGC
AGU
UCA
UCC
UCG
UCU
polar side-chains
neutral
L-ThreonineTThrThreonine119.121.315.646.090.3ACA
ACC
ACG
ACU
L-AsparagineNAsnAsparagine132.121.405.414.420GAC
GAU
L-GlutamineQGlnGlutamine146.151.325.653.934.9CAA
CAG
L-TyrosineYTyrTyrosine181.191.465.663.50.4UAC
UAU
L-CysteineCCysCysteine121.161.335.022.8160UGC
UGU
L-LysineKLysLysine146.21.139.597.0~2000AAA
AAG
polar side-chains
basic
L-ArginineRArgArginine174.210.7011.154.7149AGA
AGG
CGA
CGC
CGG
CGU
L-HistidineHHisHistidine155.161.427.472.138.2CAC
CAU
L-Aspartic acidDAspAspartate133.11.512.775.54.3GAC
GAU
polar side-chains
acidic
L-Glutamic acidEGluGlutamate147.121.413.226.27.5GAA
GAG



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last updated: 14.11.14