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1ed5

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[[Image:1ed5.gif|left|200px]]
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{{Seed}}
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[[Image:1ed5.png|left|200px]]
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{{STRUCTURE_1ed5| PDB=1ed5 | SCENE= }}
{{STRUCTURE_1ed5| PDB=1ed5 | SCENE= }}
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'''BOVINE ENDOTHELIAL NITRIC OXIDE SYNTHASE HEME DOMAIN COMPLEXED WITH NNA(H4B FREE)'''
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===BOVINE ENDOTHELIAL NITRIC OXIDE SYNTHASE HEME DOMAIN COMPLEXED WITH NNA(H4B FREE)===
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==Overview==
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Nitric oxide is generated under normal and pathophysiological conditions by three distinct isoforms of nitric oxide synthase (NOS). A small-molecule inhibitor of NOS (3-Br-7-nitroindazole, 7-NIBr) is profoundly neuroprotective in mouse models of stroke and Parkinson's disease. We report the crystal structure of the catalytic heme domain of endothelial NOS complexed with 7-NIBr at 1.65 A resolution. Critical to the binding of 7-NIBr at the substrate site is the adoption by eNOS of an altered conformation, in which a key glutamate residue swings out toward one of the heme propionate groups. Perturbation of the heme propionate ensues and eliminates the cofactor tetrahydrobiopterin-heme interaction. We also present three crystal structures that reveal how alterations at the substrate site facilitate 7-NIBr and structurally dissimilar ligands to occupy the cofactor site.
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The line below this paragraph, {{ABSTRACT_PUBMED_11695891}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 11695891 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11695891}}
==About this Structure==
==About this Structure==
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[[Category: Heme protein]]
[[Category: Heme protein]]
[[Category: Nitric oxide synthase]]
[[Category: Nitric oxide synthase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 14:57:07 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 00:30:59 2008''

Revision as of 21:31, 30 June 2008

Image:1ed5.png

Template:STRUCTURE 1ed5

BOVINE ENDOTHELIAL NITRIC OXIDE SYNTHASE HEME DOMAIN COMPLEXED WITH NNA(H4B FREE)

Template:ABSTRACT PUBMED 11695891

About this Structure

1ED5 is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

Reference

Crystal structure of nitric oxide synthase bound to nitro indazole reveals a novel inactivation mechanism., Raman CS, Li H, Martasek P, Southan G, Masters BS, Poulos TL, Biochemistry. 2001 Nov 13;40(45):13448-55. PMID:11695891

Page seeded by OCA on Tue Jul 1 00:30:59 2008

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