Definition of dehydrogenase in English:


Syllabification: de·hy·dro·gen·ase
Pronunciation: /ˌdēˈhīdrəjəˌnās, -ˌnāz


An enzyme that catalyzes the removal of hydrogen atoms from a particular molecule, particularly in the electron transport chain reactions of cell respiration in conjunction with the coenzymes NAD and FAD: glucose-6-phosphate dehydrogenase
More example sentences
  • Both classes of enzymes are involved in a wide range of redox reactions, e.g. succinate dehydrogenase and xanthine oxidase.
  • Choline dehydrogenase of E. coli catalyses the first step in the synthesis of betaine, the oxidation of choline.
  • The best studied set of isozymes is the lactate dehydrogenase system.


early 20th century: from de- (expressing removal) + hydrogen + -ase.

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cause (someone) to lose confidence or hope; dispirit