PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1911845-8 1991 The GBS C5a-ase appears to be a serine esterase on the basis of its sensitivity to di-isopropyl fluorophosphate. Isoflurophate 83-111 complement C5a receptor 1 Homo sapiens 8-11