2h7o: Difference between revisions
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[[Image:2h7o.gif|left|200px]] | [[Image:2h7o.gif|left|200px]] | ||
'''Crystal structure of the Rho-GTPase binding domain of YpkA''' | {{Structure | ||
|PDB= 2h7o |SIZE=350|CAPTION= <scene name='initialview01'>2h7o</scene>, resolution 2.000Å | |||
|SITE= | |||
|LIGAND= | |||
|ACTIVITY= | |||
|GENE= ypkA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=633 Yersinia pseudotuberculosis]) | |||
}} | |||
'''Crystal structure of the Rho-GTPase binding domain of YpkA''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
2H7O is a [ | 2H7O is a [[Single protein]] structure of sequence from [http://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]. | ||
==Reference== | ==Reference== | ||
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:[http:// | 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:[http://www.ncbi.nlm.nih.gov/pubmed/16959567 16959567] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Yersinia pseudotuberculosis]] | [[Category: Yersinia pseudotuberculosis]] | ||
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[[Category: ypka]] | [[Category: ypka]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:13:42 2008'' | ||
Revision as of 15:13, 20 March 2008
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| 2h7o, resolution 2.000Å | |||||||||||||
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| Gene: | ypkA (Yersinia pseudotuberculosis) | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Crystal structure of the Rho-GTPase binding domain of YpkA
Overview
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.
About this Structure
2H7O is a Single protein structure of sequence from Yersinia pseudotuberculosis. Full crystallographic information is available from OCA.
Reference
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
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