1qks

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{{Seed}}
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{{STRUCTURE_1qks| PDB=1qks | SCENE= }}
{{STRUCTURE_1qks| PDB=1qks | SCENE= }}
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'''CYTOCHROME CD1 NITRITE REDUCTASE, OXIDISED FORM'''
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===CYTOCHROME CD1 NITRITE REDUCTASE, OXIDISED FORM===
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==Overview==
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Cytochrome cd1-nitrite reductase is a bifunctional enzyme that catalyzes the one-electron reduction of nitrite to nitric oxide and the four-electron reduction of oxygen to water. The 1.55 A crystal structure of the dimeric enzyme from Thiosphaera pantotropha is reported here. The protein was sequenced from the X-ray structure. Each subunit contains a covalent c heme with two axial His ligands (His-17, His-69) and a unique noncovalent d1 heme ligated by Tyr-25 and His-200. The d1 heme is the mononuclear iron center where both oxygen and nitrite reduction take place. The two types of heme are located in separate domains whose arrangement suggests a mechanism requiring domain movement during catalysis.
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(as it appears on PubMed at http://www.pubmed.gov), where 7736589 is the PubMed ID number.
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{{ABSTRACT_PUBMED_7736589}}
==About this Structure==
==About this Structure==
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[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
[[Category: Periplasmic]]
[[Category: Periplasmic]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:23:45 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 17:43:10 2008''

Revision as of 14:43, 28 July 2008

Image:1qks.png

Template:STRUCTURE 1qks

CYTOCHROME CD1 NITRITE REDUCTASE, OXIDISED FORM

Template:ABSTRACT PUBMED 7736589

About this Structure

1QKS is a Single protein structure of sequence from Paracoccus denitrificans. Full crystallographic information is available from OCA.

Reference

The anatomy of a bifunctional enzyme: structural basis for reduction of oxygen to water and synthesis of nitric oxide by cytochrome cd1., Fulop V, Moir JW, Ferguson SJ, Hajdu J, Cell. 1995 May 5;81(3):369-77. PMID:7736589

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