Rabbit anti-Human Acetylcholine Receptor (N-terminal) polyclonal antibody for WB, IHC-P. The acetylcholine receptor of muscle, like the nicotinic acetylcholine receptor of the Torpedo electric organ, has 5 subunits of 4 different types: 2 alpha and 1 each of beta, gamma, and delta subunits. The alpha subunit exists in 2 isoforms. The protein-coding sequence of the human ACHRA gene is divided into 9 exons that correspond to different structural and functional domains of the precursor molecule. Human nicotinic acetylcholine receptor genes alpha is assigned to chromosome 2. Mutation of the acetylcholine receptor alpha subunit causes a slow-channel myasthenic syndrome by enhancing agonist binding affinity.