PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9186487-10 1997 Of considerable importance was the fact that NO participates in activation of the neutrophil collagenase through its conversion to NO2 or ONOO- in human neutrophils. Nitrogen Dioxide 131-134 matrix metallopeptidase 8 Homo sapiens 82-104