View source for 2isf


==Crystal Structure of C298A W219Y Aldose Reductase complexed with Phenylacetic Acid==
<StructureSection load='2isf' size='340' side='right'caption='[[2isf]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2isf]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ISF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2ISF 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]] 2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAP:NADP+NICOTINAMIDE-ADENINE-DINUCLEOTIDE+PHOSPHATE'>NAP</scene>, <scene name='pdbligand=PAC:2-PHENYLACETIC+ACID'>PAC</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=2isf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2isf OCA], [https://pdbe.org/2isf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2isf RCSB], [https://www.ebi.ac.uk/pdbsum/2isf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2isf ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ALDR_HUMAN ALDR_HUMAN] Catalyzes the NADPH-dependent reduction of a wide variety of carbonyl-containing compounds to their corresponding alcohols with a broad range of catalytic efficiencies.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/is/2isf_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2isf ConSurf].
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== Publication Abstract from PubMed ==
The competitive inhibition constants of series of inhibitors related to phenylacetic acid against both wild-type and the doubly mutanted C298A/W219Y aldose reductase have been measured. Van't Hoff analysis shows that these acids bind with an enthalpy near -6.8 kcal/mol derived from the electrostatic interactions, while the 100-fold differences in binding affinity appear to be largely due to entropic factors that result from differences in conformational freedom in the unbound state. These temperature studies also point out the difference between substrate and inhibitor binding. X-ray crystallographic analysis of a few of these inhibitor complexes both confirms the importance of a previously described anion binding site and reveals the hydrophobic nature of the primary binding site and its general plasticity. Based on these results, N-glycylthiosuccinimides were synthesized to demonstrate their potential in studies that probe distal binding sites. Reduced alpha-lipoic acid, an anti-oxidant and therapeutic for diabetic complications, was shown to bind aldose reductase with a binding constant of 1 microM.

Structural and thermodynamic studies of simple aldose reductase-inhibitor complexes.,Brownlee JM, Carlson E, Milne AC, Pape E, Harrison DH Bioorg Chem. 2006 Dec;34(6):424-44. Epub 2006 Nov 2. PMID:17083960<ref>PMID:17083960</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2isf" style="background-color:#fffaf0;"></div>

==See Also==
*[[Aldose reductase 3D structures|Aldose reductase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Brownlee JM]]
[[Category: Harrison DHT]]
[[Category: Pape E]]