6.2
[1]. M J De Wolf, et al. Structure-function studies of cholera toxin and its A and B protomers. Modification of tryptophan residues. J Biol Chem. 191 Jun 1;26(11):41-.
H22-H2+H12+H2-H14
P21-P24-P241-P26-P261-P264-P27-P271-P2-P1+P+P1-P2+P2-P4+P4-P-P62+P64-P6-P7+P7-P4-P1
GHS2,GHS,GHS7
261