Homo sapiens protein active alpha-amylase isozyme active alpha-amylase isozyme (human) fam:hAMY Category=organism-family. Requested by=HPO. Note: The enzymatic activity corresponds to EC 3.2.1.1. This class refers only to functional enzymes; that is, those with measurable activity. The isozymes are produced by the salivary glands (the identical AMY1A, AMY1B, and AMY1C genes) and the pancreas (AMY2A and AMY2B genes). PR:000049996 An active alpha-amylase isozyme that is encoded in the genome of human.