PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3263922-5 1988 Addition of leupeptin to PFA-treated M phi also reduced the amount of released IL1 activity, suggesting that proteolytic modification of the IL1 alpha precursor is involved in the generation of biological active IL1 alpha. leupeptin 12-21 interleukin 1 complex Mus musculus 79-82