View source for 1zb8


==Crystal structure of Xylella fastidiosa organic peroxide resistance protein==
<StructureSection load='1zb8' size='340' side='right'caption='[[1zb8]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1zb8]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Xylella_fastidiosa_9a5c Xylella fastidiosa 9a5c]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZB8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ZB8 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]] 2.4&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=OCS:CYSTEINESULFONIC+ACID'>OCS</scene>, <scene name='pdbligand=PE4:2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL'>PE4</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=1zb8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zb8 OCA], [https://pdbe.org/1zb8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1zb8 RCSB], [https://www.ebi.ac.uk/pdbsum/1zb8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1zb8 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q9PCF4_XYLFA Q9PCF4_XYLFA] 
== 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/zb/1zb8_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=1zb8 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Organic hydroperoxide resistance proteins (Ohr) belong to a family of proteins that possess thiol-dependent peroxidase activity endowed by reactive cysteine residues able to reduce peroxides. The crystal structure of Ohr from Xylella fastidiosa in complex with polyethylene glycol, providing insights into enzyme-substrate interactions is described herein. In addition, crystallographic studies, molecular modeling and biochemical assays also indicated that peroxides derived from long chain fatty acids could be the biological substrates of Ohr. Because different oxidation states of the reactive cysteine were present in the Ohr structures from X. fastidiosa, Pseudomonas aeruginosa and Deinococcus radiodurans it was possible to envisage a set of snapshots along the coordinate of the enzyme-catalyzed reaction. The redox intermediates of X. fastidiosa Ohr observed in the crystals were further characterized in solution by electrospray ionization mass spectrometry and by biochemical approaches. In this study, the formation of an intramolecular disulfide bond and oxidative inactivation through the formation of a sulfonic acid derivative was unequivocally demonstrated for the first time. Because Ohr proteins are exclusively present in bacteria, they may represent promising targets for therapeutical drugs. In this regard, the structural and functional analyses of Ohr presented here might be very useful.

Structural insights into enzyme-substrate interaction and characterization of enzymatic intermediates of organic hydroperoxide resistance protein from Xylella fastidiosa.,Oliveira MA, Guimaraes BG, Cussiol JR, Medrano FJ, Gozzo FC, Netto LE J Mol Biol. 2006 Jun 2;359(2):433-45. Epub 2006 Apr 7. PMID:16631787<ref>PMID:16631787</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1zb8" style="background-color:#fffaf0;"></div>

==See Also==
*[[Organic hydroperoxide resistance protein|Organic hydroperoxide resistance protein]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Xylella fastidiosa 9a5c]]
[[Category: Cussiol JR]]
[[Category: Gozzo FC]]
[[Category: Guimaraes BG]]
[[Category: Medrano FJ]]
[[Category: Netto LE]]
[[Category: Oliveira MA]]
[[Category: Vidigal SA]]