2gas: Difference between revisions
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New page: left|200px<br /><applet load="2gas" size="450" color="white" frame="true" align="right" spinBox="true" caption="2gas, resolution 1.6Å" /> '''Crystal Structure of ... |
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== | ==Crystal Structure of Isoflavone Reductase== | ||
Isoflavonoids play important roles in plant defense and exhibit a range of | <StructureSection load='2gas' size='340' side='right'caption='[[2gas]], [[Resolution|resolution]] 1.60Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2gas]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Medicago_sativa Medicago sativa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GAS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GAS 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]] 1.6Å</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=2gas FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gas OCA], [https://pdbe.org/2gas PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gas RCSB], [https://www.ebi.ac.uk/pdbsum/2gas PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gas ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/IFR_MEDSA IFR_MEDSA] Reduces achiral isoflavones to chiral isoflavanones during the biosynthesis of chiral pterocarpan phytoalexins. The reduction product is a third isomer, which represents the penultimate intermediate in the synthesis of the phytoalexin (-)-medicarpin, the major phytoalexin in Alfalfa. | |||
== 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/ga/2gas_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=2gas ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Isoflavonoids play important roles in plant defense and exhibit a range of mammalian health-promoting activities. Isoflavone reductase (IFR) specifically recognizes isoflavones and catalyzes a stereospecific NADPH-dependent reduction to (3R)-isoflavanone. The crystal structure of Medicago sativa IFR with deletion of residues 39-47 has been determined at 1.6A resolution. Structural analysis, molecular modeling and docking, and comparison with the structures of other NADPH-dependent enzymes, defined the putative binding sites for co-factor and substrate and potential key residues for enzyme activity and substrate specificity. Further mutagenesis has confirmed the role of Lys144 as a catalytic residue. This study provides a structural basis for understanding the enzymatic mechanism and substrate specificity of IFRs as well as the functions of IFR-like proteins. | |||
Crystal structure of isoflavone reductase from alfalfa (Medicago sativa L.).,Wang X, He X, Lin J, Shao H, Chang Z, Dixon RA J Mol Biol. 2006 May 19;358(5):1341-52. Epub 2006 Mar 29. PMID:16600295<ref>PMID:16600295</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2gas" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Medicago sativa]] | [[Category: Medicago sativa]] | ||
[[Category: Chang Z]] | |||
[[Category: Chang | [[Category: Dixon RA]] | ||
[[Category: Dixon | [[Category: He X]] | ||
[[Category: He | [[Category: Lin J]] | ||
[[Category: Lin | [[Category: Shao H]] | ||
[[Category: Shao | [[Category: Wang X]] | ||
[[Category: Wang | |||
Latest revision as of 09:38, 30 August 2023
Crystal Structure of Isoflavone Reductase
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