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1joa

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[[Image:1joa.jpg|left|200px]]
 
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==NADH PEROXIDASE WITH CYSTEINE-SULFENIC ACID==
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The line below this paragraph, containing "STRUCTURE_1joa", creates the "Structure Box" on the page.
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<StructureSection load='1joa' size='340' side='right'caption='[[1joa]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1joa]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Enterococcus_faecalis Enterococcus faecalis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JOA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1JOA 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]] 2.8&#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=CSO:S-HYDROXYCYSTEINE'>CSO</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene></td></tr>
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{{STRUCTURE_1joa| PDB=1joa | SCENE= }}
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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=1joa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1joa OCA], [https://pdbe.org/1joa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1joa RCSB], [https://www.ebi.ac.uk/pdbsum/1joa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1joa ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/NAPE_ENTFA NAPE_ENTFA] Peroxidase whose active site is a redox-active cysteine-sulfenic acid.
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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/jo/1joa_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=1joa ConSurf].
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<div style="clear:both"></div>
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'''NADH PEROXIDASE WITH CYSTEINE-SULFENIC ACID'''
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==See Also==
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*[[NADH peroxidase|NADH peroxidase]]
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__TOC__
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==Overview==
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</StructureSection>
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In order to obtain the crystal structure of the flavoprotein NADH peroxidase with its native Cys42-sulfenic acid redox center, a strategy combining reduced exposure of crystals to ambient oxygen and data collection at -160 degrees C was applied. The structure of the native enzyme to 2.8 A resolution is described; these results conclusively establish the existence of the Cys42-sulfenic acid as the functional non-flavin redox center of the peroxidase and provide the first structure for any naturally occurring protein-sulfenic acid. The Cys42-sulfenic acid atoms C alpha-C beta-S gamma-O roughly define a planar arrangement which is stacked parallel to the si face of the FAD isoalloxazine and positions the sulfenyl oxygen atom only 3.3 A from FAD-C4A. His10-N epsilon 2 contributes a hydrogen bond to the sulfenic acid oxygen, at a distance of 3.2 A. Although one oxygen atom (OX1) of the non-native Cys42-sulfonic acid derivative identified in the earlier wild-type peroxidase structure was taken to represent the native Cys42-sulfenic acid oxygen [Stehle, T., Ahmed, S. A., Claiborne, A., &amp; Schulz, G. E. (1991) J. Mol. Biol. 221, 1325-1344], this structure shows that the sulfenic acid oxygen does not occupy this position, nor is it hydrogen-bonded to Cys42-N as was OX1. Comparison of the native Cys42-sulfenic acid structure with that of two-electron reduced glutathione reductase provides an insight into the sulfenic acid FAD charge-transfer interaction observed with both wild-type and His10 mutant peroxidases. A model of the E.NADH intermediate recently observed in stopped-flow analyses of the enzyme [Crane, E. J., III, Parsonage, D., Poole, L. B., &amp; Claiborne, A. (1995) Biochemistry 34, 14114-14124] has also been generated to assist in analyzing the chemical mechanism of sulfenic acid reduction.
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==About this Structure==
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1JOA is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Enterococcus_faecalis Enterococcus faecalis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JOA OCA].
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==Reference==
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Structure of the native cysteine-sulfenic acid redox center of enterococcal NADH peroxidase refined at 2.8 A resolution., Yeh JI, Claiborne A, Hol WG, Biochemistry. 1996 Aug 6;35(31):9951-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8756456 8756456]
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[[Category: Enterococcus faecalis]]
[[Category: Enterococcus faecalis]]
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[[Category: NADH peroxidase]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Claiborne AC]]
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[[Category: Claiborne, A C.]]
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[[Category: Hol WGJ]]
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[[Category: Hol, W G.J.]]
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[[Category: Yeh JI]]
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[[Category: Yeh, J I.]]
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[[Category: Cysteine-sulfenic acid]]
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[[Category: Oxidoreductase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 21:29:51 2008''
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Current revision

NADH PEROXIDASE WITH CYSTEINE-SULFENIC ACID

PDB ID 1joa

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