4eq4: Difference between revisions
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==Crystal structure of seleno-methionine derivatized GH3.12== | |||
<StructureSection load='4eq4' size='340' side='right'caption='[[4eq4]], [[Resolution|resolution]] 2.07Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4eq4]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4EQ4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4EQ4 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]] 2.074Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=SAL:2-HYDROXYBENZOIC+ACID'>SAL</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=4eq4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4eq4 OCA], [https://pdbe.org/4eq4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4eq4 RCSB], [https://www.ebi.ac.uk/pdbsum/4eq4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4eq4 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/GH312_ARATH GH312_ARATH] Catalyzes the conjugation of specific amino acids (e.g. Glu and possibly His, Lys, and Met) to their preferred acyl substrates (e.g. 4-substituted benzoates), in a magnesium ion- and ATP-dependent manner. Can use 4-substituted benzoates such as 4-aminobenzoate (pABA), 4-fluorobenzoate and 4-hydroxybenzoate (4-HBA), and, to a lesser extent, benzoate, vanillate and trans-cinnamate, but not 2-substituted benzoates and salicylic acid (SA), as conjugating acyl substrates. Involved in both basal and induced resistance in a SA-dependent manner. Confers resistance to virulent and avirulent pathogens (at least bacteria and oomycetes), and promotes SA glucosides accumulation. Required for the establishment of hyper-sensitive response (HR) upon incompatible interaction and subsequent systemic acquired resistance (SAR).<ref>PMID:18266921</ref> <ref>PMID:10224270</ref> <ref>PMID:11846877</ref> <ref>PMID:16353557</ref> <ref>PMID:17918621</ref> <ref>PMID:17521413</ref> <ref>PMID:17468220</ref> <ref>PMID:19189963</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Acyl acid amido synthetases of the GH3 family act as critical prereceptor modulators of plant hormone action; however, the molecular basis for their hormone selectivity is unclear. Here, we report the crystal structures of benzoate-specific Arabidopsis thaliana AtGH3.12/PBS3 and jasmonic acid (JA)-specific AtGH3.11/JAR1. These structures, combined with biochemical analysis, define features for the conjugation of amino acids to diverse acyl acid substrates and highlight the importance of conformational changes in the C-terminal domain for catalysis. We also identify residues forming the acyl acid binding site across the GH3 family and residues critical for amino acid recognition. Our results demonstrate how a highly adaptable three-dimensional scaffold is used for the evolution of promiscuous activity across an enzyme family for modulation of plant signaling molecules. | |||
Structural Basis for Prereceptor Modulation of Plant Hormones by GH3 Proteins.,Westfall CS, Zubieta C, Herrmann J, Kapp U, Nanao MH, Jez JM Science. 2012 May 24. PMID:22628555<ref>PMID:22628555</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4eq4" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Arabidopsis thaliana]] | |||
[[Category: Large Structures]] | |||
[[Category: Jez J]] | |||
[[Category: Kapp U]] | |||
[[Category: Nanao M]] | |||
[[Category: Westfall C]] | |||
[[Category: Zubieta C]] | |||