PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3039012-0 1987 In vivo Streptococcus pyogenes C5a peptidase activity: analysis using transposon- and nitrosoguanidine-induced mutants. Nitrosoguanidines 86-102 complement C5a receptor 1 Homo sapiens 31-34