Table 1.

Amino acids representation by single letter and three letters for the construction of RF, SVM, and GNN models based on amino acids composition feature.

One-letter	Three-letter	Amino acid name	One-letter	Three-letter	Amino acid name
A	Ala	Alanine	N	Asn	Asparagine
B	Asx	Aspartic/Asparagine	P	Pro	Proline
C	Cys	Cysteine	Q	Gln	Glutamine
D	Asp	Aspartic acid	R	Arg	Arginine
E	Glu	Glutamic acid	S	Ser	Serine
F	Phe	Phenylalanine	T	Thr	Threonine
G	Gly	Glycine	U	Sec	Selenocysteine
H	His	Histidine	V	Val	Valine
I	Ile	Isoleucine	W	Trp	Tryptophan
K	Lys	Lysine	X	Xxx	Any
L	Leu	Leucine	Y	Tyr	Tyrosine
M	Met	Methionine	Z	Glx	Glutamine/Glutamic