PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6189480-5 1983 [14C]Methylamine incorporation was 4.1, 3.9, 2.6 and 3.2 mol/mol of proteinase inhibitor for human alpha 2M, rat alpha 1M, rat alpha 2M and mouse alpha 2M, respectively. Carbon-14 1-4 pregnancy-zone protein Rattus norvegicus 113-121 2432067-15 1987 182, 125-129) recently reported that alpha 1I3 also contains a thiol ester bond, as do alpha 1M and alpha 2M, since it reacts covalently with [14C]methylamine and is cleaved autolytically at 80 degrees C. We have examined negatively stained preparations of native, trypsin-treated, and methylamine-treated human alpha 2M, rat alpha 2M, and rat alpha 1M in the electron microscope. Carbon-14 143-146 pregnancy-zone protein Rattus norvegicus 87-95