1n2n: Difference between revisions
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'''Crystal structure of cyanide complex of the oxygenase domain of inducible nitric oxide synthase.''' | {{Structure | ||
|PDB= 1n2n |SIZE=350|CAPTION= <scene name='initialview01'>1n2n</scene>, resolution 2.4Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=CYN:CYANIDE+ION'>CYN</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=H4B:5,6,7,8-TETRAHYDROBIOPTERIN'>H4B</scene> and <scene name='pdbligand=ARG:ARGININE'>ARG</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Nitric-oxide_synthase Nitric-oxide synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.13.39 1.14.13.39] | |||
|GENE= | |||
}} | |||
'''Crystal structure of cyanide complex of the oxygenase domain of inducible nitric oxide synthase.''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1N2N is a [ | 1N2N is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N2N OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structures of cyanide complexes of P450cam and the oxygenase domain of inducible nitric oxide synthase-structural models of the short-lived oxygen complexes., Fedorov R, Ghosh DK, Schlichting I, Arch Biochem Biophys. 2003 Jan 1;409(1):25-31. PMID:[http:// | Crystal structures of cyanide complexes of P450cam and the oxygenase domain of inducible nitric oxide synthase-structural models of the short-lived oxygen complexes., Fedorov R, Ghosh DK, Schlichting I, Arch Biochem Biophys. 2003 Jan 1;409(1):25-31. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12464241 12464241] | ||
[[Category: Mus musculus]] | [[Category: Mus musculus]] | ||
[[Category: Nitric-oxide synthase]] | [[Category: Nitric-oxide synthase]] | ||
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[[Category: oxygen complex analogue]] | [[Category: oxygen complex analogue]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:51:25 2008'' | ||
Revision as of 13:51, 20 March 2008
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| , resolution 2.4Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , and | ||||||
| Activity: | Nitric-oxide synthase, with EC number 1.14.13.39 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of cyanide complex of the oxygenase domain of inducible nitric oxide synthase.
OverviewOverview
The crystal structure of the ternary cyanide complex of P450cam and camphor was determined to 1.8A resolution and found to be identical with the structure of the active oxygen complex [I. Schlichting et al., 2000, Science 287, 1615]. Notably, cyanide binds in a bent mode and induces the active conformation that is characterized by the presence of two water molecules and a flip of the carbonyl of the conserved Asp251. The structure of the ternary complex of cyanide, L-arginine, and the oxygenase domain of inducible nitric oxide synthase was determined to 2.4A resolution. Cyanide binds essentially linearly, interacts with L-Arg, and induces the binding of a water molecule at the active site. This water is positioned by backbone interactions, located 2.8A from the nitrogen atom of cyanide, and could provide a proton required for O-O bond scission in the hydroxylation reaction of nitric oxide synthase.
About this StructureAbout this Structure
1N2N is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structures of cyanide complexes of P450cam and the oxygenase domain of inducible nitric oxide synthase-structural models of the short-lived oxygen complexes., Fedorov R, Ghosh DK, Schlichting I, Arch Biochem Biophys. 2003 Jan 1;409(1):25-31. PMID:12464241
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