3np3: Difference between revisions
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==C112D/M121E Pseudomonas Aeruginosa Azurin== | ==C112D/M121E Pseudomonas Aeruginosa Azurin== | ||
<StructureSection load='3np3' size='340' side='right' caption='[[3np3]], [[Resolution|resolution]] 2.10Å' scene=''> | <StructureSection load='3np3' size='340' side='right'caption='[[3np3]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3np3]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3np3]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3NP3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3NP3 FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1Å</td></tr> | ||
<tr id=' | <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=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</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=3np3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3np3 OCA], [https://pdbe.org/3np3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3np3 RCSB], [https://www.ebi.ac.uk/pdbsum/3np3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3np3 ProSAT]</span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/AZUR_PSEAE AZUR_PSEAE] Transfers electrons from cytochrome c551 to cytochrome oxidase. | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
| Line 22: | Line 21: | ||
==See Also== | ==See Also== | ||
*[[Azurin|Azurin]] | *[[Azurin 3D structures|Azurin 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Pseudomonas aeruginosa]] | ||
[[Category: | [[Category: Gray HB]] | ||
[[Category: | [[Category: Lancaster KM]] | ||
Latest revision as of 12:18, 6 September 2023
C112D/M121E Pseudomonas Aeruginosa AzurinC112D/M121E Pseudomonas Aeruginosa Azurin
Structural highlights
FunctionAZUR_PSEAE Transfers electrons from cytochrome c551 to cytochrome oxidase. Publication Abstract from PubMedRedox 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. 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[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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