View source for 2ivd


==Structure of protoporphyrinogen oxidase from Myxococcus xanthus with acifluorfen==
<StructureSection load='2ivd' size='340' side='right'caption='[[2ivd]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2ivd]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Myxococcus_xanthus Myxococcus xanthus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IVD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IVD 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]] 2.3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACJ:5-[2-CHLORO-4-(TRIFLUOROMETHYL)PHENOXY]-2-NITROBENZOIC+ACID'>ACJ</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=TWN:(3S)-3-[(2S,3S,4R)-3,4-DIMETHYLTETRAHYDROFURAN-2-YL]BUTYL+LAURATE'>TWN</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=2ivd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ivd OCA], [https://pdbe.org/2ivd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ivd RCSB], [https://www.ebi.ac.uk/pdbsum/2ivd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ivd ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PGOX_MYXXA PGOX_MYXXA] Catalyzes the 6-electron oxidation of protoporphyrinogen-IX to form protoporphyrin-IX (PubMed:8621504). Does not oxidize coproporphyrinogen III (PubMed:8621504). Involved in the classical protoporphyrin-dependent (PPD) heme b biosynthesis (PubMed:28123057).<ref>PMID:8621504</ref> <ref>PMID:28123057</ref> 
== 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/iv/2ivd_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=2ivd ConSurf].
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== Publication Abstract from PubMed ==
Protoporphyrinogen IX oxidase, a monotopic membrane protein, which catalyzes the oxidation of protoporphyrinogen IX to protoporphyrin IX in the heme/chlorophyll biosynthetic pathway, is distributed widely throughout nature. Here we present the structure of protoporphyrinogen IX oxidase from Myxococcus xanthus, an enzyme with similar catalytic properties to human protoporphyrinogen IX oxidase that also binds the common plant herbicide, acifluorfen. In the native structure, the planar porphyrinogen substrate is mimicked by a Tween 20 molecule, tracing three sides of the macrocycle. In contrast, acifluorfen does not mimic the planarity of the substrate but is accommodated by the shape of the binding pocket and held in place by electrostatic and aromatic interactions. A hydrophobic patch surrounded by positively charged residues suggests the position of the membrane anchor, differing from the one proposed for the tobacco mitochondrial protoporphyrinogen oxidase. Interestingly, there is a discrepancy between the dimerization state of the protein in solution and in the crystal. Conserved structural features are discussed in relation to a number of South African variegate porphyria-causing mutations in the human enzyme.

Crystal structure of protoporphyrinogen oxidase from Myxococcus xanthus and its complex with the inhibitor acifluorfen.,Corradi HR, Corrigall AV, Boix E, Mohan CG, Sturrock ED, Meissner PN, Acharya KR J Biol Chem. 2006 Dec 15;281(50):38625-33. Epub 2006 Oct 17. PMID:17046834<ref>PMID:17046834</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Myxococcus xanthus]]
[[Category: Acharya KR]]
[[Category: Boix E]]
[[Category: Corradi HR]]
[[Category: Corrigall AV]]
[[Category: Meissner PN]]
[[Category: Mohan CG]]
[[Category: Sturrock ED]]