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3rgp

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==Structural and Kinetic Analysis of the Beef liver Catalase complexed with Nitric Oxide==
==Structural and Kinetic Analysis of the Beef liver Catalase complexed with Nitric Oxide==
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<StructureSection load='3rgp' size='340' side='right' caption='[[3rgp]], [[Resolution|resolution]] 1.88&Aring;' scene=''>
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<StructureSection load='3rgp' size='340' side='right'caption='[[3rgp]], [[Resolution|resolution]] 1.88&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3rgp]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RGP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3RGP FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3rgp]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RGP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3RGP FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=NO:NITRIC+OXIDE'>NO</scene></td></tr>
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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]] 1.88&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3re8|3re8]], [[3rgs|3rgs]]</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=NO:NITRIC+OXIDE'>NO</scene></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Catalase Catalase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.11.1.6 1.11.1.6] </span></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=3rgp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3rgp OCA], [https://pdbe.org/3rgp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3rgp RCSB], [https://www.ebi.ac.uk/pdbsum/3rgp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3rgp ProSAT]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3rgp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3rgp OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3rgp RCSB], [http://www.ebi.ac.uk/pdbsum/3rgp PDBsum]</span></td></tr>
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</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/CATA_BOVIN CATA_BOVIN] Occurs in almost all aerobically respiring organisms and serves to protect cells from the toxic effects of hydrogen peroxide. Promotes growth of cells.
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We present the structures of bovine catalase in its native form and complexed with ammonia and nitric oxide, obtained by X-ray crystallography. Using the NO generator 1-(N,N-diethylamino)diazen-1-ium-1,2-diolate, we were able to generate sufficiently high NO concentrations within the catalase crystals that substantial occupation was observed despite a high dissociation rate. Nitric oxide seems to be slightly bent from the heme normal that may indicate some iron(II) character in the formally ferric catalase. Microspectrophotometric investigations inline with the synchrotron X-ray beam reveal photoreduction of the central heme iron. In the cases of the native and ammonia-complexed catalase, reduction is accompanied by a relaxation phase. This is likely not the case for the catalase NO complex. The kinetics of binding of NO to catalase were investigated using NO photolyzed from N,N'-bis(carboxymethyl)-N,N'-dinitroso-p-phenylenediamine using an assay that combines catalase with myoglobin binding kinetics. The off rate is 1.5 s(-1). Implications for catalase function are discussed.
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Interaction of Nitric Oxide with Catalase: Structural and Kinetic Analysis.,Purwar N, McGarry JM, Kostera J, Pacheco AA, Schmidt M Biochemistry. 2011 May 6. PMID:21524057<ref>PMID:21524057</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
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</div>
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*[[Catalase 3D structures|Catalase 3D structures]]
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bos taurus]]
[[Category: Bos taurus]]
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[[Category: Catalase]]
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[[Category: Large Structures]]
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[[Category: Purwar, N.]]
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[[Category: Purwar N]]
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[[Category: Schmidt, M]]
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[[Category: Schmidt M]]
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[[Category: 6th coordination site as a binding pocket]]
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[[Category: Binding of nitric oxide]]
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[[Category: Heme protein]]
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[[Category: Nitrosylation]]
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[[Category: Oxidoreducatase]]
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[[Category: Oxidoreductase]]
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Current revision

Structural and Kinetic Analysis of the Beef liver Catalase complexed with Nitric Oxide

PDB ID 3rgp

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