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2pfb

From Proteopedia

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Current revision

Structure of oxidized OhrR from Xanthamonas campestris

Structural highlights

2pfb is a 2 chain structure with sequence from Xanthomonas campestris. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.93Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q93R11_XANCH

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The Xanthomonas campestris transcription regulator OhrR contains a reactive cysteine residue (C22) that upon oxidation by organic hydroperoxides (OHPs) forms an intersubunit disulphide bond with residue C127'. Such modification induces the expression of a peroxidase that reduces OHPs to their less toxic alcohols. Here, we describe the structures of reduced and OHP-oxidized OhrR, visualizing the structural mechanism of OHP induction. Reduced OhrR takes a canonical MarR family fold with C22 and C127' separated by 15.5 A. OHP oxidation results in the disruption of the Y36'-C22-Y47' interaction network and dissection of helix alpha5, which then allows the 135 degrees rotation and 8.2 A translation of C127', formation of the C22-C127' disulphide bond, and alpha6-alpha6' helix-swapped reconfiguration of the dimer interface. These changes result in the 28 degrees rigid body rotations of each winged helix-turn-helix motif and DNA dissociation. Similar effector-induced rigid body rotations are expected for most MarR family members.

Structural mechanism of organic hydroperoxide induction of the transcription regulator OhrR.,Newberry KJ, Fuangthong M, Panmanee W, Mongkolsuk S, Brennan RG Mol Cell. 2007 Nov 30;28(4):652-64. PMID:18042459^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Newberry KJ, Fuangthong M, Panmanee W, Mongkolsuk S, Brennan RG. Structural mechanism of organic hydroperoxide induction of the transcription regulator OhrR. Mol Cell. 2007 Nov 30;28(4):652-64. PMID:18042459 doi:10.1016/j.molcel.2007.09.016

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2pfb"

Categories: Large Structures | Xanthomonas campestris | Brennan RG | Newberry KJ

@@ Line 3: / Line 3: @@
 <StructureSection load='2pfb' size='340' side='right'caption='[[2pfb]], [[Resolution|resolution]] 1.93&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2pfb]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_campestris"_pammel_1895 "bacillus campestris" pammel 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PFB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PFB FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2pfb]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Xanthomonas_campestris Xanthomonas campestris]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PFB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PFB FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2pex|2pex]], [[1z91|1z91]], [[1z9c|1z9c]]</div></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.93&#8491;</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ohrR ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=339 "Bacillus campestris" Pammel 1895])</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=2pfb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pfb OCA], [https://pdbe.org/2pfb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2pfb RCSB], [https://www.ebi.ac.uk/pdbsum/2pfb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2pfb ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/Q93R11_XANCH Q93R11_XANCH]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 34: / Line 35: @@
 __TOC__
 </StructureSection>
-[[Category: Bacillus campestris pammel 1895]]
 [[Category: Large Structures]]
-[[Category: Brennan, R G]]
+[[Category: Xanthomonas campestris]]
-[[Category: Newberry, K J]]
+[[Category: Brennan RG]]
-[[Category: Marr family]]
+[[Category: Newberry KJ]]
-[[Category: Transcription regulator]]
-[[Category: Transcriptional regulator]]

2pfb

From Proteopedia

Current revision

Structure of oxidized OhrR from Xanthamonas campestris

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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