1n63: Difference between revisions
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==Crystal Structure of the Cu,Mo-CO Dehydrogenase (CODH); Carbon monoxide reduced state== | ==Crystal Structure of the Cu,Mo-CO Dehydrogenase (CODH); Carbon monoxide reduced state== | ||
<StructureSection load='1n63' size='340' side='right' caption='[[1n63]], [[Resolution|resolution]] 1.21Å' scene=''> | <StructureSection load='1n63' size='340' side='right'caption='[[1n63]], [[Resolution|resolution]] 1.21Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1n63]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Oligotropha_carboxidovorans Oligotropha carboxidovorans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N63 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1N63 FirstGlance]. <br> | <table><tr><td colspan='2'>[[1n63]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Oligotropha_carboxidovorans Oligotropha carboxidovorans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N63 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1N63 FirstGlance]. <br> | ||
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Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/n6/1n63_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/n6/1n63_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
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</div> | </div> | ||
<div class="pdbe-citations 1n63" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 1n63" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Carbon monoxide dehydrogenase 3D structures|Carbon monoxide dehydrogenase 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Oligotropha carboxidovorans]] | [[Category: Oligotropha carboxidovorans]] | ||
[[Category: Dobbek, H]] | [[Category: Dobbek, H]] | ||
Revision as of 10:50, 31 July 2019
Crystal Structure of the Cu,Mo-CO Dehydrogenase (CODH); Carbon monoxide reduced stateCrystal Structure of the Cu,Mo-CO Dehydrogenase (CODH); Carbon monoxide reduced state
Structural highlights
Function[DCMS_OLICO] Catalyzes the oxidation of carbon monoxide to carbon dioxide. [DCMM_OLICO] Catalyzes the oxidation of carbon monoxide to carbon dioxide. [DCML_OLICO] Catalyzes the oxidation of carbon monoxide to carbon dioxide. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe CO dehydrogenase of the eubacterium Oligotropha carboxidovorans is a 277-kDa Mo- and Cu-containing iron-sulfur flavoprotein. Here, the enzyme's active site in the oxidized or reduced state, after inactivation with potassium cyanide or with n-butylisocyanide bound to the active site, has been reinvestigated by multiple wavelength anomalous dispersion measurements at atomic resolution, electron spin resonance spectroscopy, and chemical analyses. We present evidence for a dinuclear heterometal [CuSMoO)OH] cluster in the active site of the oxidized or reduced enzyme, which is prone to cyanolysis. The cluster is coordinated through interactions of the Mo with the dithiolate pyran ring of molybdopterin cytosine dinucleotide and of the Cu with the Sgamma of Cys-388, which is part of the active-site loop VAYRC(388)SFR. The previously reported active-site structure [Dobbek, H., Gremer, L., Meyer, O. & Huber, R. (1999) Proc. Natl. Acad. Sci. USA 96, 8884-8889] of an Mo with three oxygen ligands and an SeH-group bound to the Sgamma atom of Cys-388 could not be confirmed. The structure of CO dehydrogenase with the inhibitor n-butylisocyanide bound has led to a model for the catalytic mechanism of CO oxidation which involves a thiocarbonate-like intermediate state. The dinuclear [CuSMo(O)OH] cluster of CO dehydrogenase establishes a previously uncharacterized class of dinuclear molybdoenzymes containing the pterin cofactor. Catalysis at a dinuclear [CuSMo(==O)OH] cluster in a CO dehydrogenase resolved at 1.1-A resolution.,Dobbek H, Gremer L, Kiefersauer R, Huber R, Meyer O Proc Natl Acad Sci U S A. 2002 Dec 10;99(25):15971-6. PMID:12475995[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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