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.

2h7o

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 10:26, 21 December 2022

Crystal structure of the Rho-GTPase binding domain of YpkA

Structural highlights

2h7o is a 1 chain structure with sequence from Yersinia pseudotuberculosis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

YPKA_YERPS Acts as a virulence determinant.^[1] ^[2]

Publication Abstract from PubMed

Yersinia spp. cause gastroenteritis and the plague, representing historically devastating pathogens that are currently an important biodefense and antibiotic resistance concern. A critical virulence determinant is the Yersinia protein kinase A, or YpkA, a multidomain protein that disrupts the eukaryotic actin cytoskeleton. Here we solve the crystal structure of a YpkA-Rac1 complex and find that YpkA possesses a Rac1 binding domain that mimics host guanidine nucleotide dissociation inhibitors (GDIs) of the Rho GTPases. YpkA inhibits nucleotide exchange in Rac1 and RhoA, and mutations that disrupt the YpkA-GTPase interface abolish this activity in vitro and impair in vivo YpkA-induced cytoskeletal disruption. In cell culture experiments, the kinase and the GDI domains of YpkA act synergistically to promote cytoskeletal disruption, and a Y. pseudotuberculosis mutant lacking YpkA GDI activity shows attenuated virulence in a mouse infection assay. We conclude that virulence in Yersinia depends strongly upon mimicry of host GDI proteins by YpkA.

Yersinia virulence depends on mimicry of host Rho-family nucleotide dissociation inhibitors.,Prehna G, Ivanov MI, Bliska JB, Stebbins CE Cell. 2006 Sep 8;126(5):869-80. PMID:16959567^[3]

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

References

↑ Juris SJ, Rudolph AE, Huddler D, Orth K, Dixon JE. A distinctive role for the Yersinia protein kinase: actin binding, kinase activation, and cytoskeleton disruption. Proc Natl Acad Sci U S A. 2000 Aug 15;97(17):9431-6. PMID:10920208 doi:http://dx.doi.org/10.1073/pnas.170281997
↑ Navarro L, Koller A, Nordfelth R, Wolf-Watz H, Taylor S, Dixon JE. Identification of a molecular target for the Yersinia protein kinase A. Mol Cell. 2007 May 25;26(4):465-77. PMID:17531806 doi:http://dx.doi.org/S1097-2765(07)00285-7
↑ Prehna G, Ivanov MI, Bliska JB, Stebbins CE. Yersinia virulence depends on mimicry of host Rho-family nucleotide dissociation inhibitors. Cell. 2006 Sep 8;126(5):869-80. PMID:16959567 doi:10.1016/j.cell.2006.06.056

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2h7o"

@@ Line 3: / Line 3: @@
 <StructureSection load='2h7o' size='340' side='right'caption='[[2h7o]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2h7o]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_pseudotuberkulosis"_(sic)_pfeiffer_1889 "bacillus pseudotuberkulosis" (sic) pfeiffer 1889]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2H7O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2H7O FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2h7o]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Yersinia_pseudotuberculosis Yersinia pseudotuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2H7O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2H7O FirstGlance]. <br>
-</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ypkA ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=633 "Bacillus pseudotuberkulosis" (sic) Pfeiffer 1889])</td></tr>
+</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=2h7o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h7o OCA], [https://pdbe.org/2h7o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2h7o RCSB], [https://www.ebi.ac.uk/pdbsum/2h7o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2h7o ProSAT]</span></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=2h7o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h7o OCA], [https://pdbe.org/2h7o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2h7o RCSB], [https://www.ebi.ac.uk/pdbsum/2h7o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2h7o ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/YPKA_YERPS YPKA_YERPS]] Acts as a virulence determinant.<ref>PMID:10920208</ref> <ref>PMID:17531806</ref>
+[https://www.uniprot.org/uniprot/YPKA_YERPS YPKA_YERPS] Acts as a virulence determinant.<ref>PMID:10920208</ref> <ref>PMID:17531806</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 23: / Line 22: @@
 </StructureSection>
 [[Category: Large Structures]]
-[[Category: Bliska, J B]]
+[[Category: Yersinia pseudotuberculosis]]
-[[Category: Ivanov, M]]
+[[Category: Bliska JB]]
-[[Category: Prehna, G]]
+[[Category: Ivanov M]]
-[[Category: Stebbins, C E]]
+[[Category: Prehna G]]
-[[Category: Gdi]]
+[[Category: Stebbins CE]]
-[[Category: Signaling protein]]
-[[Category: Yersinia]]
-[[Category: Yopo]]
-[[Category: Ypka]]

2h7o

From Proteopedia

Revision as of 10:26, 21 December 2022

Crystal structure of the Rho-GTPase binding domain of YpkA

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox