each of the protein in this family , which range from 47 to 83 residues , contains an arg-gly-asp amino acid sequence found in protein ligands that binds to gpiib-iiia , a high ( 17 +/- 1 % ) cysteine content conserved in the primary sequence , and a homologous n-terminal region absent only in the echistatin isoforms .
C0033684
protein
C0597298
isoforms