PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21928345-8 2012 Reactive nitrogen species (RNS) may affect protein targets, such as TIMP-1, which are crucial for the regulation of MMP activities by oxidation of sulfydryl groups, or by nitration of tyrosine residues. sulfydryl 147-156 TIMP metallopeptidase inhibitor 1 Homo sapiens 68-74