B Amino Acid Alphabet

Table B.1: Amino acid abbreviations and physico-chemical properties according to Livingstone et al., 1993 [239]

One letter Code	Three letter Code	Amino Acid	Physico-chemical properties
A	Ala	Alanine	tiny, hydrophobic
C	Cys	Cysteine	small, hydrophobic, polar (\(C_{S-H}\))
D	Asp	Aspartic AciD	small, negatively charged, polar
E	Glu	Glutamic Acid	negatively charged, polar
F	Phe	Phenylalanine	aromatic, hydrophobic
G	Gly	Glycine	tiny, hydrophobic
H	His	Histidine	hydrophobic, aromatic, polar, (positively charged)
I	Ile	Isoleucine	aliphatic, hydrophobic
K	Lys	Lysine	positively charged, polar
L	Leu	Leucine	aliphatic, hydrophobic
M	Met	Methionine	hydrophobic
N	Asn	AsparagiNe	small, polar
P	Pro	Proline	small
Q	Gln	Glutamine	tiny, hydrophobic
R	Arg	ARginine	positively charged, polar
S	Ser	Serine	tiny, polar
T	Thr	Threonine	hydrophobic, polar
V	Val	Valine	small, aliphatic
W	Trp	Tryptophan	aromatic, hydrophobic, polar
Y	Tyr	TYrosine	aromatic, hydrophobic, polar

References

239. Livingstone, C.D., and Barton, G.J. (1993). Protein sequence alignments: a strategy for the hierarchical analysis of residue conservation. Bioinformatics 9, 745–756., doi: 10.1093/bioinformatics/9.6.745.