For 10 points, name this group of enzymes that allows for the consumption and production of ethanol-containing beverages.
Methylotrophic bacteria possess a derivative of this enzyme that requires a quinoid cofactor like PQQ to function. The chemical mechanism by which this enzyme proceeds involves the deprotonation of its His-51 and Ser-41 residues, and in mammals this enzyme can be classified as EE, SS, or as an ES hybrid depending on the presence of steroids within its structure. This dimeric oxidoreductase has a much larger 4-subunit variant in yeast, which use this enzyme and (*) acetaldehyde to regenerate NAD+ for use in glycolysis. With an active site containing a zinc atom surrounded by cysteine residues, this enzyme produces aldehydes and ketones from their most reduced form. For 10 points, name this group of enzymes that allows for the consumption and production of ethanol-containing beverages.
Methylotrophic bacteria possess a derivative of this enzyme that requires a quinoid cofactor like PQQ to function.
alcohol dehydrogenase or ADH