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3oqr

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{{STRUCTURE_3oqr| PDB=3oqr | SCENE= }}
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==C112D/M121E Azurin, pH 10.0==
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===C112D/M121E Azurin, pH 10.0===
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<StructureSection load='3oqr' size='340' side='right' caption='[[3oqr]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
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{{ABSTRACT_PUBMED_20879734}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3oqr]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OQR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3OQR FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene></td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3np2|3np2]], [[3np3|3np3]], [[3np4|3np4]]</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">azu, PA4922 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=287 Pseudomonas aeruginosa])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3oqr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3oqr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3oqr RCSB], [http://www.ebi.ac.uk/pdbsum/3oqr PDBsum]</span></td></tr>
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</table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Redox and spectroscopic (electronic absorption, multifrequency electron paramagnetic resonance (EPR), and X-ray absorption) properties together with X-ray crystal structures are reported for the type 2 Cu(II) C112D/M121E variant of Pseudomonas aeruginosa azurin. The results suggest that Cu(II) is constrained from interaction with the proximal glutamate; this structural frustration implies a "rack" mechanism for the 290 mV (vs NHE) reduction potential measured at neutral pH. At high pH ( approximately 9), hydrogen bonding in the outer coordination sphere is perturbed to allow axial glutamate ligation to Cu(II), with a decrease in potential to 119 mV. These results highlight the role played by outer-sphere interactions, and the structural constraints they impose, in determining the redox behavior of transition metal protein cofactors.
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==Function==
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Outer-Sphere Effects on Reduction Potentials of Copper Sites in Proteins: The Curious Case of High Potential Type 2 C112D/M121E Pseudomonas aeruginosa Azurin.,Lancaster KM, Sproules S, Palmer JH, Richards JH, Gray HB J Am Chem Soc. 2010 Sep 29. PMID:20879734<ref>PMID:20879734</ref>
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[[http://www.uniprot.org/uniprot/AZUR_PSEAE AZUR_PSEAE]] Transfers electrons from cytochrome c551 to cytochrome oxidase.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[3oqr]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OQR OCA].
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</div>
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==Reference==
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==See Also==
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<ref group="xtra">PMID:020879734</ref><references group="xtra"/><references/>
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*[[Azurin|Azurin]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Pseudomonas aeruginosa]]
[[Category: Pseudomonas aeruginosa]]
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[[Category: Gray, H B.]]
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[[Category: Gray, H B]]
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[[Category: Lancaster, K M.]]
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[[Category: Lancaster, K M]]
[[Category: Electron transfer]]
[[Category: Electron transfer]]
[[Category: Electron transport]]
[[Category: Electron transport]]

Revision as of 06:53, 19 December 2014

C112D/M121E Azurin, pH 10.0

3oqr, resolution 2.40Å

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