PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6180729-2 1982 The present results confirm our previous findings that disruption of the internal thioesters, is not in itself sufficient to cause the conformational change of alpha 2M typical of alpha 2-M-proteinase complexes; the electrophoretically slow form of alpha 2M with [14C]methylamine incorporated was isolated. Carbon-14 264-267 alpha-2-macroglobulin Homo sapiens 249-257