Localization of histidine residues relevant for the binding of alpha-bungarotoxin to the acetylcholine receptor alpha-subunit in V8-proteolytic fragments Lacorazza, H.D.; López, R.A.; Venera, G.D.; Biscoglio De Jiménez Bonino, M. Neurochemistry International 28(5-6): 557-567 1996 0197-0186 10.1016/0197-0186(95)00113-1 https://eurekamag.com/research/008/966/008966132.php