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2jol

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Revision as of 06:54, 11 July 2018

Average NMR structure of the catalytic domain of guanine nucleotide exchange factor BopE from Burkholderia pseudomallei

Structural highlights

2jol is a 1 chain structure with sequence from "bacillus_pseudomallei"_whitmore_1913 "bacillus pseudomallei" whitmore 1913. This structure supersedes the now removed PDB entry 2aic. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1r6e, 1r9k, 1gzs, 2jok
Gene:	bopE ("Bacillus pseudomallei" Whitmore 1913)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[BOPE_BURPS] Activator for both CDC42 and RAC1 by directly interacting with these Rho GTPases and acting as a guanine nucleotide exchange factor (GEF). This activation results in actin cytoskeleton rearrangements and stimulates membrane ruffling, thus promoting bacterial entry into non-phagocytic cells.^[1] ^[2] ^[3]

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

BopE is a type III secreted protein from Burkholderia pseudomallei, the aetiological agent of melioidosis, a severe emerging infection. BopE is a GEF (guanine-nucleotide-exchange factor) for the Rho GTPases Cdc42 (cell division cycle 42) and Rac1. We have determined the structure of BopE catalytic domain (amino acids 78-261) by NMR spectroscopy and it shows that BopE(78-261) comprises two three-helix bundles (alpha1alpha4alpha5 and alpha2alpha3alpha6). This fold is similar to that adopted by the BopE homologues SopE and SopE2, which are GEFs from Salmonella. Whereas the two three-helix bundles of SopE(78-240) and SopE2(69-240) form the arms of a 'Lambda' shape, BopE(78-261) adopts a more closed conformation with substantial interactions between the two three-helix bundles. We propose that arginine and proline residues are important in the conformational differences between BopE and SopE/E2. Analysis of the molecular interface in the SopE(78-240)-Cdc42 complex crystal structure indicates that, in a BopE-Cdc42 interaction, the closed conformation of BopE(78-261) would engender steric clashes with the Cdc42 switch regions. This implies that BopE(78-261) must undergo a closed-to-open conformational change in order to catalyse guanine nucleotide exchange. In an NMR titration to investigate the BopE(78-261)-Cdc42 interaction, the appearance of additional peaks per NH for residues in hinge regions of BopE(78-261) indicates that BopE(78-261) does undergo a closed-to-open conformational change in the presence of Cdc42. The conformational change hypothesis is further supported by substantial improvement of BopE(78-261) catalytic efficiency through mutations that favour an open conformation. Requirement for closed-to-open conformational change explains the 10-40-fold lower k(cat) of BopE compared with SopE and SopE2.

The guanine-nucleotide-exchange factor BopE from Burkholderia pseudomallei adopts a compact version of the Salmonella SopE/SopE2 fold and undergoes a closed-to-open conformational change upon interaction with Cdc42.,Upadhyay A, Wu HL, Williams C, Field T, Galyov EE, van den Elsen JM, Bagby S Biochem J. 2008 May 1;411(3):485-93. PMID:18052936^[4]

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

References

↑ Stevens MP, Wood MW, Taylor LA, Monaghan P, Hawes P, Jones PW, Wallis TS, Galyov EE. An Inv/Mxi-Spa-like type III protein secretion system in Burkholderia pseudomallei modulates intracellular behaviour of the pathogen. Mol Microbiol. 2002 Nov;46(3):649-59. PMID:12410823
↑ Stevens MP, Friebel A, Taylor LA, Wood MW, Brown PJ, Hardt WD, Galyov EE. A Burkholderia pseudomallei type III secreted protein, BopE, facilitates bacterial invasion of epithelial cells and exhibits guanine nucleotide exchange factor activity. J Bacteriol. 2003 Aug;185(16):4992-6. PMID:12897019
↑ Stevens MP, Haque A, Atkins T, Hill J, Wood MW, Easton A, Nelson M, Underwood-Fowler C, Titball RW, Bancroft GJ, Galyov EE. Attenuated virulence and protective efficacy of a Burkholderia pseudomallei bsa type III secretion mutant in murine models of melioidosis. Microbiology. 2004 Aug;150(Pt 8):2669-76. PMID:15289563 doi:10.1099/mic.0.27146-0
↑ Upadhyay A, Wu HL, Williams C, Field T, Galyov EE, van den Elsen JM, Bagby S. The guanine-nucleotide-exchange factor BopE from Burkholderia pseudomallei adopts a compact version of the Salmonella SopE/SopE2 fold and undergoes a closed-to-open conformational change upon interaction with Cdc42. Biochem J. 2008 May 1;411(3):485-93. PMID:18052936 doi:10.1042/BJ20071546

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==Average NMR structure of the catalytic domain of guanine nucleotide exchange factor BopE from Burkholderia pseudomallei==
 <StructureSection load='2jol' size='340' side='right' caption='[[2jol]], [[NMR_Ensembles_of_Models | 1 NMR models]]' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1r6e|1r6e]], [[1r9k|1r9k]], [[1gzs|1gzs]], [[2jok|2jok]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">bopE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=28450 "Bacillus pseudomallei" Whitmore 1913])</td></tr>
-<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=2jol FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jol OCA], [http://pdbe.org/2jol PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2jol RCSB], [http://www.ebi.ac.uk/pdbsum/2jol PDBsum]</span></td></tr>
+<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=2jol FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jol OCA], [http://pdbe.org/2jol PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2jol RCSB], [http://www.ebi.ac.uk/pdbsum/2jol PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2jol ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jo/2jol_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jo/2jol_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/chain_selection.php?pdb_ID=2ata ConSurf].
+</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=2jol ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">

2jol

From Proteopedia

Revision as of 06:54, 11 July 2018

Average NMR structure of the catalytic domain of guanine nucleotide exchange factor BopE from Burkholderia pseudomallei

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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