5syk
From Proteopedia
(Difference between revisions)
(New page: '''Unreleased structure''' The entry 5syk is ON HOLD Authors: Loewen, P.C. Description: Crystal structure of B. pseudomallei KatG treated with hydrogen peroxide [[Category: Unreleased ...) |
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of B. pseudomallei KatG treated with hydrogen peroxide== | |
| + | <StructureSection load='5syk' size='340' side='right'caption='[[5syk]], [[Resolution|resolution]] 1.80Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[5syk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Burkholderia_pseudomallei_1710b Burkholderia pseudomallei 1710b]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=4mvp 4mvp]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5SYK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5SYK 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]] 1.8Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene>, <scene name='pdbligand=MRD:(4R)-2-METHYLPENTANE-2,4-DIOL'>MRD</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=OXY:OXYGEN+MOLECULE'>OXY</scene>, <scene name='pdbligand=TOX:1-HYDROPEROXY-L-TRYPTOPHAN'>TOX</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=5syk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5syk OCA], [https://pdbe.org/5syk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5syk RCSB], [https://www.ebi.ac.uk/pdbsum/5syk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5syk ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/KATG_BURP1 KATG_BURP1] Bifunctional enzyme with both catalase and broad-spectrum peroxidase activity. | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Catalase peroxidases (KatG's) are bifunctional heme proteins that can disproportionate hydrogen peroxide (catalatic reaction) despite their structural dissimilarity with monofunctional catalases. Using X-ray crystallography and QM/MM calculations, we demonstrate that the catalatic reaction of KatG's involves deprotonation of the active-site Trp, which plays a role similar to that of the distal His in monofunctional catalases. The interaction of a nearby mobile arginine with the distal Met-Tyr-Trp essential adduct (in/out) acts as an electronic switch, triggering deprotonation of the adduct Trp. | ||
| - | + | An ionizable active-site tryptophan imparts catalase activity to a peroxidase core.,Loewen PC, Carpena X, Vidossich P, Fita I, Rovira C J Am Chem Soc. 2014 May 21;136(20):7249-52. doi: 10.1021/ja502794e. Epub 2014 May, 7. PMID:24785434<ref>PMID:24785434</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| - | [[Category: Loewen | + | <div class="pdbe-citations 5syk" style="background-color:#fffaf0;"></div> |
| + | |||
| + | ==See Also== | ||
| + | *[[Catalase 3D structures|Catalase 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Burkholderia pseudomallei 1710b]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Loewen PC]] | ||
Current revision
Crystal structure of B. pseudomallei KatG treated with hydrogen peroxide
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