PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8951654-6 1996 Recently, we have shown that histamine binds to the histamine H2 receptor as a monocation in its proximal tautomeric form, and, moreover, we suggested that a proton is donated from the receptor towards the tele-position of the agonist, thereby triggering the biological effect [Nederkoorn et al., J. Mol. Histamine 29-38 histamine receptor H2 Homo sapiens 52-73