Isocitrate Dehydrogenase

An enzyme of the oxidoreductase class that catalyzes the conversion of isocitrate and NAD+ to yield 2-ketoglutarate, carbon dioxide, and NADH. It occurs in cell mitochondria. The enzyme requires Mg2+, Mn2+; it is activated by ADP, citrate, and Ca2+, and inhibited by NADH, NADPH, and ATP. The reaction is the key rate-limiting step of the citric acid (tricarboxylic) cycle. (From Dorland, 27th ed) (The NADP+ enzyme is EC 1.1.1.42.) EC 1.1.1.41.

Also Known As:

Isocitrate Dehydrogenase (NAD+); Dehydrogenase, Isocitrate; Isocitrate Dehydrogenase-I; Dehydrogenase, NAD Isocitrate; Isocitrate Dehydrogenase I; Isocitrate Dehydrogenase, NAD; NAD Isocitrate Dehydrogenase; Isocitrate:NAD+ oxidoreductase (decarboxylating)

Enzymes and Coenzymes: 1
- Enzymes: 152586
  - Oxidoreductases: 13671
    - Alcohol Oxidoreductases: 56
      - NAD (+) and NADP (+) Dependent Alcohol Oxidoreductases
        Isocitrate Dehydrogenase: 2705

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