PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8403896-13 1993 We shall consider possible roles for PQQ in the biosynthesis of nitric oxide (NO, endothelium-derived relaxing factor, EDRF) from L-arginine and in NO removal by superoxide. PQQ Cofactor 37-40 alpha hemoglobin stabilizing protein Mus musculus 119-123