PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 132431-4 1975 Spectrophotometric studies on the azo-coupling products of 17 amino acids and their derivatives revealed that the amino acid residue of myosin modified by the diazonium dye was cysteine in both the presence and absence of ATP. anthrone 34-37 myosin heavy chain 14 Homo sapiens 136-142