PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 34707193-2 2021 The sp2 carbon atoms adjacent to nitrogen in the pyridine ring provide pi-acceptor which forms a complex with filled d-orbital of native oxides on Cu and Ru metal film. pyridine 49-57 Sp2 transcription factor Homo sapiens 4-7