Peptide sequence: VKRPTKKGRD RAGKGQKPRG KEQLAKRKTF SLVKEKKAAR TLSAILLAFI Sequence homology: Cow: 93%; Dog: 86%; Guinea Pig: 100%; Horse: 86%; Human: 100%; Mouse: 93%; Rabbit: 93%; Rat: 93%. The muscarinic cholinergic receptors belong to a larger family o