4yuc: Difference between revisions
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==Crystal Structure of CorB derivatized with S-(2-acetamidoethyl) 4-methyl-3-oxohexanethioate== | ==Crystal Structure of CorB derivatized with S-(2-acetamidoethyl) 4-methyl-3-oxohexanethioate== | ||
<StructureSection load='4yuc' size='340' side='right' caption='[[4yuc]], [[Resolution|resolution]] 1.31Å' scene=''> | <StructureSection load='4yuc' size='340' side='right'caption='[[4yuc]], [[Resolution|resolution]] 1.31Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4yuc]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4YUC OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[4yuc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Corallococcus_coralloides Corallococcus coralloides]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4YUC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4YUC FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</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]] 1.31Å</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</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=4yuc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4yuc OCA], [https://pdbe.org/4yuc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4yuc RCSB], [https://www.ebi.ac.uk/pdbsum/4yuc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4yuc ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/D7RK32_CORCK D7RK32_CORCK] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Corallopyronin A is a polyketide derived from the myxobacterium Corallococcus coralloides with potent antibiotic features. The gene cluster responsible for the biosynthesis of corallopyronin A has been described recently, and it was proposed that CorB acts as a ketosynthase to interconnect two polyketide chains in a rare head-to-head condensation reaction. We determined the structure of CorB, the interconnecting polyketide synthase, to high resolution and found that CorB displays a thiolase fold. Site-directed mutagenesis showed that the catalytic triad consisting of a cysteine, a histidine and an asparagine is crucial for catalysis, and that this triad shares similarities with the triad found in HMG-CoA synthases. We synthesized a substrate mimic to derivatize purified CorB and confirmed substrate attachment by ESI-MS. Structural analysis of the complex yielded an electron density-based model for the polyketide chain and showed that the unusually wide, T-shaped active site is able to accommodate two polyketides simultaneously. Our structural analysis provides a platform for understanding the unusual head-to-head polyketide-interconnecting reaction catalyzed by CorB. | |||
Structural basis of head to head polyketide fusion by CorB.,Zocher G, Vilstrup J, Heine D, Hallab A, Goralski E, Hertweck C, Stahl M, Schaberle TF, Stehle T Chem Sci. 2015 Nov 13;6(11):6525-6536. doi: 10.1039/c5sc02488a. Epub 2015 Aug 6. PMID:28757960<ref>PMID:28757960</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4yuc" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Corallococcus coralloides]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Stehle T]] | ||
[[Category: | [[Category: Vilstrup J]] | ||
[[Category: | [[Category: Zocher G]] | ||