#reductase  an enzyme that catalyses the biochemical reduction of some specified substance
  supertype:  enzyme  any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
  subtype:  HMG-CoA_reductase__5-hydroxy-3-methylglutaryl-coenzyme_A_reductase  a liver enzyme that is responsible for producing cholesterol

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