PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16488514-11 2006 However, manganese decreased iNOS enzymatic activity possibly through the depletion of cofactor since exogenous tetrahydrobiopterin reversed manganese"s action. sapropterin 112-131 nitric oxide synthase 2 Rattus norvegicus 29-33