Peptide sequence: PDIVLFDNAD GRFEGTSTKT VIRYNGTVTW TPPANYKSSC TIDVTFFPFD Sequence homology: Cow: 85%; Dog: 79%; Horse: 85%; Human: 100%; Mouse: 92%; Pig: 85%; Rabbit: 92%; Rat: 92%. Nicotinic acetylcholine receptors (nAChRs), such as CHRNA5, are members