1dcc

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[[Image:1dcc.gif|left|200px]]<br /><applet load="1dcc" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1dcc, resolution 2.2&Aring;" />
 
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'''2.2 ANGSTROM STRUCTURE OF OXYPEROXIDASE: A MODEL FOR THE ENZYME:PEROXIDE COMPLEX'''<br />
 
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==Overview==
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==2.2 ANGSTROM STRUCTURE OF OXYPEROXIDASE: A MODEL FOR THE ENZYME:PEROXIDE COMPLEX==
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The Fe+3-OOH complex of peroxidases has a very short half life, and its structure cannot be determined by conventional methods. The Fe+2-O2 complex provides a useful structural model for this intermediate, as it differs by only one electron and one proton from the transient Fe+3-OOH complex. We therefore determined the crystal structure of the Fe+2-O2 complex formed by a yeast cytochrome c peroxidase mutant with Trp 191 replaced by Phe. The refined structure shows that dioxygen can form a hydrogen bond with the conserved distal His residue, but not with the conserved distal Arg residue. When the transient Fe+3-OOH complex is modelled in a similar orientation, the active site of peroxidase appears to be optimized for catalysing proton transfer between the vicinal oxygen atoms of the peroxy-anion.
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<StructureSection load='1dcc' size='340' side='right'caption='[[1dcc]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1dcc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DCC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1DCC FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=OXY:OXYGEN+MOLECULE'>OXY</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1dcc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dcc OCA], [https://pdbe.org/1dcc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1dcc RCSB], [https://www.ebi.ac.uk/pdbsum/1dcc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1dcc ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CCPR_YEAST CCPR_YEAST] Destroys radicals which are normally produced within the cells and which are toxic to biological systems.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dc/1dcc_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1dcc ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1DCC is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae] with <scene name='pdbligand=OXY:'>OXY</scene> and <scene name='pdbligand=HEM:'>HEM</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Cytochrome-c_peroxidase Cytochrome-c peroxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.11.1.5 1.11.1.5] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DCC OCA].
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*[[Cytochrome c peroxidase|Cytochrome c peroxidase]]
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*[[Cytochrome c peroxidase 3D structures|Cytochrome c peroxidase 3D structures]]
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==Reference==
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*[[Hemeproteins|Hemeproteins]]
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2.2 A structure of oxy-peroxidase as a model for the transient enzyme: peroxide complex., Miller MA, Shaw A, Kraut J, Nat Struct Biol. 1994 Aug;1(8):524-31. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=7664080 7664080]
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__TOC__
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[[Category: Cytochrome-c peroxidase]]
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Single protein]]
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[[Category: Kraut J]]
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[[Category: Kraut, J.]]
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[[Category: Miller MA]]
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[[Category: Miller, M A.]]
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[[Category: Shaw A]]
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[[Category: Shaw, A.]]
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[[Category: HEM]]
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[[Category: OXY]]
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[[Category: oxidoreductase(h2o2(a))]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:15:10 2008''
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Current revision

2.2 ANGSTROM STRUCTURE OF OXYPEROXIDASE: A MODEL FOR THE ENZYME:PEROXIDE COMPLEX

PDB ID 1dcc

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