4hhw: Difference between revisions
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The | ==Crystal structure of the Pseudomonas aeruginosa azurin, H124NO YOH122== | ||
<StructureSection load='4hhw' size='340' side='right'caption='[[4hhw]], [[Resolution|resolution]] 2.00Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4hhw]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa_PAO1 Pseudomonas aeruginosa PAO1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HHW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HHW FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=NIY:META-NITRO-TYROSINE'>NIY</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4hhw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hhw OCA], [https://pdbe.org/4hhw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hhw RCSB], [https://www.ebi.ac.uk/pdbsum/4hhw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hhw ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/AZUR_PSEAE AZUR_PSEAE] Transfers electrons from cytochrome c551 to cytochrome oxidase. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
We have designed ruthenium-modified Pseudomonas aeruginosa azurins that incorporate 3-nitrotyrosine (NO2YOH) between Ru(2,2'-bipyridine)2(imidazole)(histidine) and Cu redox centers in electron transfer (ET) pathways. We investigated the structures and reactivities of three different systems: RuH107NO2YOH109, RuH124NO2YOH122, and RuH126NO2YOH122. RuH107NO2YOH109, unlabeled H124NO2YOH122, and unlabeled H126NO2YOH122 were structurally characterized. The pKa's of NO2YOH at positions 122 and 109 are 7.2 and 6.0, respectively. Reduction potentials of 3-nitrotyrosinate (NO2YO-)-modified azurins were estimated from cyclic and differential pulse voltammetry data: oxidation of NO2YO-122 occurs near 1.1 versus NHE; oxidation of NO2YO-109 is near 1.2 V. Our analysis of transient optical spectroscopic experiments indicates that hopping via NO2YO- enhances CuI oxidation rates over single-step ET by factors of 32 (RuH107NO2YO-109), 46 (RuH126NO2YO-122), and 13 (RuH124NO2YO-122). | |||
Electron Flow through Nitrotyrosinate in Pseudomonas aeruginosa Azurin.,Warren JJ, Herrera N, Hill MG, Winkler JR, Gray HB J Am Chem Soc. 2013 Jul 16. PMID:23859602<ref>PMID:23859602</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4hhw" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Azurin 3D structures|Azurin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Pseudomonas aeruginosa PAO1]] | |||
[[Category: Gray HB]] | |||
[[Category: Herrera N]] | |||
[[Category: Warren JJ]] | |||
Latest revision as of 22:56, 26 March 2025
Crystal structure of the Pseudomonas aeruginosa azurin, H124NO YOH122
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