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7 Appendix
Table 26 (continued)
Amino acid
Serine
Threonine
Tryptophan
Thyronine
Tyrosine
Valine
Aspartic acid*
Asparagine
Glutamic acid
Glutamine
Abbrev. a
Group name
Formula
Ser (S)
Seryl
Thr (T)
Threonyl
Trp (W)
Tryptophyl
Thyronyl
HO-o-O-o-CH2-CH(NH2)-CO-~
Tyr
Val
Asp
Asn
Glu
Gin
(Y)
(V)
(D)b
(N)b
(E)c
(Q)c
Tyrosyl
Valyl
a-Aspartyl
f3-Aspartyl
Aspartoyl
Asparaginyl
a-Glutamyl
y-Glutamyl
Glutamoyl
Glutaminyl
HO-o-CH2-CH(NH2)-CO-~
(H3ChCH-CH(NH2)-CO-l
HOOC-CHr CH(NH2)-CO-l
!-CO-CHz-CH(NHz)-COOH
!-CO-CHr CH(NH2)-CO-!
H2N-CO-CHr CH(NH2)-CO-!
HOOC-CHr CHr CH(NH2)-CO-!
!-CO-CHrCHrCH(NHz)-COOH
!-CO-CHrCHrCH(NHz)-CO-!
HzN -CO-CHrCHrCH(NHz)-CO-!
a IUPAC-IUB Commission on Biochemical Nomenclature, Pure App!. Chern. 1972,31,
641. The three-letter symbols are meant for normal use; the one-letter symbols should
only be applied for special cases, above all when space is restricted.
b In addition, it is recommended to use the letter B when it is not clear wether
asparagine or aspartic acid is present.
C The letter Z is used when it is not clear whether glutamine or glutamic acid is present.
Each other unknown amino acid is characterized by the letter X.
Other amino acids and amidic acids
Hippuric acid
Anthranilic acid