Nitrate reductase

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Nitrate reductase enzymes are a group of enzymes which reduce nitrate to nitrite.

• Nitrate reductase (1)- is a large and complex enzyme ; has multiple subunits and ~ 800 kD. Contains bound FAD, Mo, and cytochrome 557 and has ferredoxin Fe₄S₄ center. It is NADH/NADPH-dependent according to organism. Mo is bound to a cofactor containing a pteridine ring to form molybdopterin.

• Nitrite reductase (2, 3, 4) catalyzes the last three steps in the reduction of nitrate to NH3. Contains one ferredoxin Fe₂S₂ center and one molecule of siroheme (partially reduced Fe porphyrin) and the electron donor for each step is ferredoxin.

[edit] External links

• UMich Orientation of Proteins in Membranes protein/pdbid-1q16
• MeSH Nitrate+reductases

This enzyme-related article is a stub. You can help Wikipedia by expanding it.

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Protein: flavoproteins

Acetolactate synthase - Acyl CoA dehydrogenase - Apoptosis inducing factor - Butyryl CoA dehydrogenase - Cryptochrome - Cytochrome b5 reductase - Dihydrolipoamide dehydrogenase - Flavodoxin - Methylenetetrahydrofolate reductase - NADH dehydrogenase - NADPH oxidase - Nitrate reductase - Sarcosine oxidase - Thioredoxin reductase

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Categories: Enzyme stubs | Enzymes | Integral membrane proteins

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• This page was last modified 22:24, 25 February 2007 by Wikipedia user Arcadian. Based on work by Wikipedia user(s) Biophys, Lovecz, Alaibot, NawlinWiki, Melaen, Richhoncho and Ganeshnaik78 and Anonymous user(s) of Wikipedia.
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