Muscarinic acetylcholine receptors are G protein-coupled receptor complexes in the cell membranes of certain neurons and cells. They play several roles, including acting as the main end-receptor stimulated by acetylcholine released from postganglionic fibers in the parasympathetic nervous system. This 3D printed protein model of muscarinic acetylcholine receptor is visualized by its ribbon structure highlighting the protein’s transmembrane active sites.
This protein model is colored to visualize the different atomic structures of the receptor. Helices of the transmembrane domain are colored red-maroon, and helices of the G coupled protein blue. Coils are colored grey and the transmembrane active site residues yellow.
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