2mj4 is a 1 chain structure with sequence from Naja oxiana. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
3S11_NAJOX Binds to muscle nicotinic acetylcholine receptor (nAChR) and inhibit acetylcholine from binding to the receptor, thereby impairing neuromuscular transmission.[UniProtKB:P60775]