(a) Draw acetylcholine. See b before you start. (Note that you must include a short narrative that describes waht occurs mechanistically.)

(b) What atom on what amino acid in the esterase site of acetylcholine esterase reacts with the substrate? Include a cartoon depiction of the enzyme surface (drawn under and surrounding your acetylcholine drawing in part a) showing how it interacts with the substrate. Include an arrow to show how the electrons of the key enzyme atom attack the substrate.