PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11160649-5 2001 Structure activity studies with 30 benzimidazolone derivatives revealed that ethyl and hydrogen groups at the 1 and 3 nitrogen positions, respectively, were critical for the activation of hIK1 K+ channels and that other alkyl groups were not tolerated at these positions without some loss in potency. benzimidazolone 35-50 IKAROS family zinc finger 1 Homo sapiens 188-192