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| [[Image:1wzf.gif|left|200px]]
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| {{Structure
| | ==Crystal Structure Of An Artificial Metalloprotein: Fe(10-COOH-Salophen)/Wild Type Heme oxygenase== |
| |PDB= 1wzf |SIZE=350|CAPTION= <scene name='initialview01'>1wzf</scene>, resolution 1.85Å
| | <StructureSection load='1wzf' size='340' side='right'caption='[[1wzf]], [[Resolution|resolution]] 1.85Å' scene=''> |
| |SITE= | | == Structural highlights == |
| |LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=YOL:[[2,2'-[4-CARBOXY-1,2-PHENYLENEBIS(NITRILOMETHYLIDYNE)]BIS[PHENOLATO]](2-)-N,N',O,O']-IRON'>YOL</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>
| | <table><tr><td colspan='2'>[[1wzf]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Corynebacterium_diphtheriae Corynebacterium diphtheriae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1WZF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1WZF FirstGlance]. <br> |
| |ACTIVITY= [http://en.wikipedia.org/wiki/Heme_oxygenase Heme oxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.99.3 1.14.99.3]
| | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.85Å</td></tr> |
| |GENE= | | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=YOL:[[2,2-[4-CARBOXY-1,2-PHENYLENEBIS(NITRILOMETHYLIDYNE)]BIS[PHENOLATO]](2-)-N,N,O,O]-IRON'>YOL</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=1wzf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1wzf OCA], [https://pdbe.org/1wzf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1wzf RCSB], [https://www.ebi.ac.uk/pdbsum/1wzf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1wzf ProSAT]</span></td></tr> |
| | </table> |
| | == Function == |
| | [https://www.uniprot.org/uniprot/HMUO_CORDI HMUO_CORDI] Allows the bacteria to use the host heme as an iron source. Involved in the oxidation of heme and subsequent release of iron from the heme moiety. |
| | == 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/wz/1wzf_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=1wzf ConSurf]. |
| | <div style="clear:both"></div> |
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| '''Crystal Structure Of An Artificial Metalloprotein: Fe(10-COOH-Salophen)/Wild Type Heme oxygenase'''
| | ==See Also== |
| | | *[[Heme oxygenase 3D structures|Heme oxygenase 3D structures]] |
| | | __TOC__ |
| ==Overview==
| | </StructureSection> |
| Protein-to-protein electron transfer (ET) is a critical process in biological chemistry for which fundamental understanding is expected to provide a wealth of applications in biotechnology. Investigations of protein-protein ET systems in reductive activation of artificial cofactors introduced into proteins remains particularly challenging because of the complexity of interactions between the cofactor and the system contributing to ET. In this work, we construct an artificial protein-protein ET system, using heme oxygenase (HO), which is known to catalyze the conversion of heme to biliverdin. HO uses electrons provided from NADPH/cytochrome P450 reductase (CPR) through protein-protein complex formation during the enzymatic reaction. We report that a Fe(III)(Schiff-base), in the place of the active-site heme prosthetic group of HO, can be reduced by NADPH/CPR. The crystal structure of the Fe(10-CH(2)CH(2)COOH-Schiff-base).HO composite indicates the presence of a hydrogen bond between the propionic acid carboxyl group and Arg-177 of HO. Furthermore, the ET rate from NADPH/CPR to the composite is 3.5-fold faster than that of Fe(Schiff-base).HO, although the redox potential of Fe(10-CH(2)CH(2)COOH-Schiff-base).HO (-79 mV vs. NHE) is lower than that of Fe(Schiff-base).HO (+15 mV vs. NHE), where NHE is normal hydrogen electrode. This work describes a synthetic metal complex activated by means of a protein-protein ET system, which has not previously been reported. Moreover, the result suggests the importance of the hydrogen bond for the ET reaction of HO. Our Fe(Schiff-base).HO composite model system may provide insights with regard to design of ET biosystems for sensors, catalysts, and electronics devices.
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| ==About this Structure== | |
| 1WZF is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Corynebacterium_diphtheriae Corynebacterium diphtheriae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1WZF OCA].
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| ==Reference==
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| Design of metal cofactors activated by a protein-protein electron transfer system., Ueno T, Yokoi N, Unno M, Matsui T, Tokita Y, Yamada M, Ikeda-Saito M, Nakajima H, Watanabe Y, Proc Natl Acad Sci U S A. 2006 Jun 20;103(25):9416-21. Epub 2006 Jun 12. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16769893 16769893]
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| [[Category: Corynebacterium diphtheriae]] | | [[Category: Corynebacterium diphtheriae]] |
| [[Category: Heme oxygenase]] | | [[Category: Large Structures]] |
| [[Category: Single protein]]
| | [[Category: Ikeda-Saito M]] |
| [[Category: Ikeda-Saito, M.]] | | [[Category: Ueno T]] |
| [[Category: Ueno, T.]] | | [[Category: Unno M]] |
| [[Category: Unno, M.]] | | [[Category: Watanabe Y]] |
| [[Category: Watanabe, Y.]] | | [[Category: Yokoi N]] |
| [[Category: Yokoi, N.]] | |
| [[Category: GOL]]
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| [[Category: SO4]]
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| [[Category: YOL]]
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| [[Category: artificial metalloprotein]]
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| [[Category: electron-transfer]]
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| [[Category: heme oxygenase]]
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| [[Category: metal]]
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| [[Category: salophen]]
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| ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:03:24 2008''
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