PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6360424-4 1983 Evidence that proteolysis of beta 2-microglobulin near neutral pH is due to neutrophil elastase-like activity was obtained by the following methods: use of the model elastase substrate L-pyroglutamyl-L-prolyl-L-valine-p-nitroanilide and the specific inhibitor 2-trifluoroacetylaminobenzenesulphonyl fluoride; use of neutrophil granule extracts and determination of the size distribution of beta 2-microglobulin proteolytic fragments. 2-trifluoroacetylaminobenzenesulphonyl fluoride 260-307 beta-2-microglobulin Homo sapiens 29-49