This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

1g4w

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 02:05, 11 September 2015

CRYSTAL STRUCTURE OF THE SALMONELLA TYROSINE PHOSPHATASE AND GTPASE ACTIVATING PROTEIN SPTP

Structural highlights

1g4w is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1g4u
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[SPTP_SALTY] Effector proteins function to alter host cell physiology and promote bacterial survival in host tissues. This protein includes tyrosine phosphatase and GTPase activating protein (GAP) activities. After bacterial internalization, GAP mediates the reversal of the cytoskeletal changes induced by SopE. This function is independent of its tyrosine phosphatase activity, which remains unclear.^[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

Salmonella spp. utilize a specialized protein secretion system to deliver a battery of effector proteins into host cells. Several of these effectors stimulate Cdc42- and Rac1-dependent cytoskeletal changes that promote bacterial internalization. These potentially cytotoxic alterations are rapidly reversed by the effector SptP, a tyrosine phosphatase and GTPase activating protein (GAP) that targets Cdc42 and Rac1. The 2.3 A resolution crystal structure of an SptP-Rac1 transition state complex reveals an unusual GAP architecture that mimics host functional homologs. The phosphatase domain possesses a conserved active site but distinct surface properties. Binding to Rac1 induces a dramatic stabilization in SptP of a four-helix bundle that makes extensive contacts with the Switch I and Switch II regions of the GTPase.

Modulation of host signaling by a bacterial mimic: structure of the Salmonella effector SptP bound to Rac1.,Stebbins CE, Galan JE Mol Cell. 2000 Dec;6(6):1449-60. PMID:11163217^[4]

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

References

↑ Kaniga K, Uralil J, Bliska JB, Galan JE. A secreted protein tyrosine phosphatase with modular effector domains in the bacterial pathogen Salmonella typhimurium. Mol Microbiol. 1996 Aug;21(3):633-41. PMID:8866485
↑ Fu Y, Galan JE. A salmonella protein antagonizes Rac-1 and Cdc42 to mediate host-cell recovery after bacterial invasion. Nature. 1999 Sep 16;401(6750):293-7. PMID:10499590 doi:http://dx.doi.org/10.1038/45829
↑ Stebbins CE, Galan JE. Modulation of host signaling by a bacterial mimic: structure of the Salmonella effector SptP bound to Rac1. Mol Cell. 2000 Dec;6(6):1449-60. PMID:11163217
↑ Stebbins CE, Galan JE. Modulation of host signaling by a bacterial mimic: structure of the Salmonella effector SptP bound to Rac1. Mol Cell. 2000 Dec;6(6):1449-60. PMID:11163217

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/1g4w"

@@ Line 2: / Line 2: @@
 <StructureSection load='1g4w' size='340' side='right' caption='[[1g4w]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1g4w]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_typhimurium Salmonella enterica subsp. enterica serovar typhimurium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G4W OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1G4W FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1g4w]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G4W OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1G4W FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1g4u|1g4u]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SPTP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=90371 Salmonella enterica subsp. enterica serovar Typhimurium])</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=1g4w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g4w OCA], [http://pdbe.org/1g4w PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1g4w RCSB], [http://www.ebi.ac.uk/pdbsum/1g4w 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=1g4w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g4w OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1g4w RCSB], [http://www.ebi.ac.uk/pdbsum/1g4w PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 27: / Line 26: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1g4w" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 34: / Line 34: @@
 __TOC__
 </StructureSection>
-[[Category: Salmonella enterica subsp. enterica serovar typhimurium]]
 [[Category: Galan, J E]]
 [[Category: Stebbins, C E]]

1g4w

From Proteopedia

Revision as of 02:05, 11 September 2015

CRYSTAL STRUCTURE OF THE SALMONELLA TYROSINE PHOSPHATASE AND GTPASE ACTIVATING PROTEIN SPTP

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox