Oxidoreductases
Oxidoreductases | ||
---|---|---|
Enzyme classification | ||
EC, category | 1.-.-.- | |
Response type | Redox reaction | |
Substrate | ||
Products | ||
Occurrence | ||
Parent taxon | Creature |
Oxidoreductases are enzymes that catalyze redox reactions . They occur in all living things and in many important metabolic pathways . In general, the catalyzed reaction is:
With every reduction , an oxidation is carried out at the same time , the reactions are also reversible and the reaction equilibrium is often in the middle, therefore subdivisions into oxidases (or oxidases ), dehydrogenases , reductases and the like are not useful. Rather, a systematic distinction is made according to the functional group that functions as an electron donor or electron acceptor .
Systematics
In the internationally recognized EC classification of enzymes, the oxidoreductases form group 1. Then oxidoreductases are further subdivided according to the functional group that acts as a donor or acceptor for electrons. They often need cofactors as electron carriers.
The systematic name is donor: acceptor oxidoreductase .
Oxygenases
Oxygenases transfer one or more oxygen atoms to their substrate, and ring openings often also take place on the aromatic molecule. Most of the time, NADP is consumed.
See also
Web links
- Nomenclature Committee of the International Union of Biochemistry and Molecular Biology (NC-IUBMB): Enzyme Nomenclature. Recommendations. EC 1: oxidoreductases
- ExPASy: Oxidoreductases .