Amino acid sequence in tryptic peptides of maleylated Micrococcus sp. n. histidine decarboxylase beta-polypeptide chain]

Maleilated histidine decarboxylase beta-polypeptide chain, containing 3 arginine residue, was hydrolysed by trypsin. 4 non-overlapping homogenous peptides were isolated, 3 of them containing one arginine residue and the 4th peptide being C-terminal fragment of beta-chain. beta-Polypeptide chain is found to consist of 78 amino acid residues and to have molecular weight of 8456. Primary structure of each peptide and their possible sequence in beta-chain are determined.