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  1. Hydrolase
    • Hydrolosis (catabolic);
    • Ex: Lipase-breaks down lipid molecules
  2. Isomerase
    • Rearrangement of atoms within a molecule (neither catabolic or anabolic)
    • Ex: Phosphoglucoisomerase-converts glucose 6-phosphate into fructose 6-phosphate during glycolysis
  3. Ligase or polymerase
    • Joining two or more chemicals together (anabolic)
    • Ex: Acetyl CoA sythase-combines acetate and coenzyme A to form acetyl-CoA for the Krebs cycle
  4. Lyase
    • Splitting a chemical into smaller parts without using water (catabolic)
    • Ex: Fructose 1,6 bisphosphate aldolase-splits fructose 1,6 bisphosphate into G2P and DHAP
  5. Oxidoreductase
    • Transfer of electrons or hydrogen atoms from one molecule to another
    • Ex: Lactic acid dehydrogenase-oxidizes lactic acid to from pyruvic acid during fermentation
  6. Transferase
    • Moving a function group from one molecule to another (may be anabolic)
    • Ex: Hexokinase-transfers phosphate from ATP to glucose in the first step of glycolysis
Card Set
Enzyme Classification
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