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==Crystal structure of tomato OPR3 in complex with pHB==
==Crystal structure of tomato OPR3 in complex with pHB==
<StructureSection load='3hgs' size='340' side='right' caption='[[3hgs]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
<StructureSection load='3hgs' size='340' side='right'caption='[[3hgs]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3hgs]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Solanum_lycopersicum Solanum lycopersicum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3HGS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3HGS FirstGlance]. <br>
<table><tr><td colspan='2'>[[3hgs]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Solanum_lycopersicum Solanum lycopersicum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3HGS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3HGS FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=PHB:P-HYDROXYBENZOIC+ACID'>PHB</scene></td></tr>
</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='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3hgo|3hgo]], [[3hgr|3hgr]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=PHB:P-HYDROXYBENZOIC+ACID'>PHB</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">OPR3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4081 Solanum lycopersicum])</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=3hgs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hgs OCA], [https://pdbe.org/3hgs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3hgs RCSB], [https://www.ebi.ac.uk/pdbsum/3hgs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3hgs ProSAT]</span></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/12-oxophytodienoate_reductase 12-oxophytodienoate reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.3.1.42 1.3.1.42] </span></td></tr>
<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=3hgs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3hgs OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3hgs RCSB], [http://www.ebi.ac.uk/pdbsum/3hgs PDBsum]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/OPR3_SOLLC OPR3_SOLLC]] Specifically cleaves olefinic bonds in cyclic enones. Involved in the biosynthesis of jasmonic acid (JA) and perhaps in biosynthesis or metabolism of other oxylipin signaling moleclules. It is required for the spatial and temporal regulation of JA levels during dehiscence of anthers, promoting the stomium degeneration program (By similarity). In vitro, reduces 9S,13S-12-oxophytodienoic acid (9S,13S-OPDA) and 9R,13R-OPDA to 9S,13S-OPC-8:0 and 9R,13R-OPC-8:0, respectively.  
[https://www.uniprot.org/uniprot/OPR3_SOLLC OPR3_SOLLC] Specifically cleaves olefinic bonds in cyclic enones. Involved in the biosynthesis of jasmonic acid (JA) and perhaps in biosynthesis or metabolism of other oxylipin signaling moleclules. It is required for the spatial and temporal regulation of JA levels during dehiscence of anthers, promoting the stomium degeneration program (By similarity). In vitro, reduces 9S,13S-12-oxophytodienoic acid (9S,13S-OPDA) and 9R,13R-OPDA to 9S,13S-OPC-8:0 and 9R,13R-OPC-8:0, respectively.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hg/3hgs_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hg/3hgs_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </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/chain_selection.php?pdb_ID=2ata ConSurf].
</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=3hgs ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
12-Oxophytodienoate reductase 3 (OPR3) is a FMN-dependent oxidoreductase that catalyzes the reduction of the cyclopentenone (9S,13S)-12-oxophytodienoate [(9S,13S)-OPDA] to the corresponding cyclopentanone in the biosynthesis of the plant hormone jasmonic acid. In vitro, however, OPR3 reduces the jasmonic acid precursor (9S,13S)-OPDA as well as the enantiomeric (9R,13R)-OPDA, while its isozyme OPR1 is highly selective, accepting only (9R,13R)-OPDA as a substrate. To uncover the molecular determinants of this remarkable enantioselectivity, we determined the crystal structures of OPR1 and OPR3 in complex with the ligand p-hydroxybenzaldehyde. Structural comparison with the OPR1:(9R,13R)-OPDA complex and further biochemical and mutational analyses revealed that two active-site residues, Tyr78 and Tyr246 in OPR1 and Phe74 and His244 in OPR3, are critical for substrate filtering. The relatively smaller OPR3 residues allow formation of a wider substrate binding pocket that is less enantio-restrictive. Substitution of Phe74 and His244 by the corresponding OPR1 tyrosines resulted in an OPR3 mutant showing enhanced, OPR1-like substrate selectivity. Moreover, sequence analysis of the OPR family supports the filtering function of Tyr78 and Tyr246 and allows predictions with respect to substrate specificity and biological function of thus far uncharacterized OPR isozymes. The discovered structural features may also be relevant for other stereoselective proteins and guide the rational design of stereospecific enzymes for biotechnological applications.
Structural basis of substrate specificity of plant 12-oxophytodienoate reductases.,Breithaupt C, Kurzbauer R, Schaller F, Stintzi A, Schaller A, Huber R, Macheroux P, Clausen T J Mol Biol. 2009 Oct 9;392(5):1266-77. Epub 2009 Aug 4. PMID:19660473<ref>PMID:19660473</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
==See Also==
</div>
*[[12-oxophytodienoate reductase 3D structures|12-oxophytodienoate reductase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: 12-oxophytodienoate reductase]]
[[Category: Large Structures]]
[[Category: Solanum lycopersicum]]
[[Category: Solanum lycopersicum]]
[[Category: Breithaupt, C]]
[[Category: Breithaupt C]]
[[Category: Clausen, T]]
[[Category: Clausen T]]
[[Category: Alpha beta barrel]]
[[Category: Complex]]
[[Category: Enantioselectivity]]
[[Category: Fatty acid biosynthesis]]
[[Category: Flavoprotein]]
[[Category: Fmn]]
[[Category: Lipid synthesis]]
[[Category: Nadp]]
[[Category: Oxidoreductase]]
[[Category: Oxylipin biosynthesis]]
[[Category: Peroxisome]]
[[Category: Reductase]]

Latest revision as of 09:59, 21 February 2024

Crystal structure of tomato OPR3 in complex with pHB

3hgs, resolution 2.00Å

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