The following table lists the one-letter codes for amino acids used by the BioPharma Finder application. The letter codes are not case-sensitive.

There are several special one-letter codes for modified amino acids. See the list in Predict MS2 spectra using the kinetic model in the Peptide Mapping Analysis User Guide.

Amino acid letter codes

Amino acid

Description

A

alanine

R

arginine

N

asparagine

D

aspartic acid

C

cysteine

E

glutamic acid

Q

glutamine

G

glycine

H

histidine

I

isoleucine

L

leucine

K

lysine

M

methionine

F

phenylalanine

P

proline

S

serine

T

threonine

W

tryptophan

Y

tyrosine

V

valine