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1ogy

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{{STRUCTURE_1ogy| PDB=1ogy | SCENE= }}
{{STRUCTURE_1ogy| PDB=1ogy | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE HETERODIMERIC NITRATE REDUCTASE FROM RHODOBACTER SPHAEROIDES'''
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===CRYSTAL STRUCTURE OF THE HETERODIMERIC NITRATE REDUCTASE FROM RHODOBACTER SPHAEROIDES===
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==Overview==
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The structure of the respiratory nitrate reductase (NapAB) from Rhodobacter sphaeroides, the periplasmic heterodimeric enzyme responsible for the first step in the denitrification process, has been determined at a resolution of 3.2 A. The di-heme electron transfer small subunit NapB binds to the large subunit with heme II in close proximity to the [4Fe-4S] cluster of NapA. A total of 57 residues at the N- and C-terminal extremities of NapB adopt an extended conformation, embracing the NapA subunit and largely contributing to the total area of 5,900 A(2) buried in the complex. Complex formation was studied further by measuring the variation of the redox potentials of all the cofactors upon binding. The marked effects observed are interpreted in light of the three-dimensional structure and depict a plasticity that contributes to an efficient electron transfer in the complex from the heme I of NapB to the molybdenum catalytic site of NapA.
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{{ABSTRACT_PUBMED_14528294}}
==About this Structure==
==About this Structure==
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[[Category: Nitrate reductase]]
[[Category: Nitrate reductase]]
[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 10:18:26 2008''

Revision as of 07:18, 28 July 2008

Image:1ogy.png

Template:STRUCTURE 1ogy

CRYSTAL STRUCTURE OF THE HETERODIMERIC NITRATE REDUCTASE FROM RHODOBACTER SPHAEROIDES

Template:ABSTRACT PUBMED 14528294

About this Structure

1OGY is a Protein complex structure of sequences from Rhodobacter sphaeroides. Full crystallographic information is available from OCA.

Reference

Structural and redox plasticity in the heterodimeric periplasmic nitrate reductase., Arnoux P, Sabaty M, Alric J, Frangioni B, Guigliarelli B, Adriano JM, Pignol D, Nat Struct Biol. 2003 Nov;10(11):928-34. Epub 2003 Oct 5. PMID:14528294

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