1ttw: Difference between revisions

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[[Image:1ttw.gif|left|200px]]
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[[Image:1ttw.png|left|200px]]


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{{STRUCTURE_1ttw|  PDB=1ttw  |  SCENE=  }}  
{{STRUCTURE_1ttw|  PDB=1ttw  |  SCENE=  }}  


'''Crystal structure of the Yersinia Pestis type III secretion chaperone SycH in complex with a stable fragment of YscM2'''
===Crystal structure of the Yersinia Pestis type III secretion chaperone SycH in complex with a stable fragment of YscM2===




==Overview==
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Pathogenic Yersinia species use a type III secretion system to inject cytotoxic effector proteins directly into the cytosol of mammalian cells, where they neutralize the innate immune response by interfering with the signal-transduction pathways that control phagocytosis and inflammation. To be exported efficiently, some effectors must transiently associate with cognate cytoplasmic secretion chaperones. SycH is the chaperone for YopH, a potent eukaryotic-like protein tyrosine phosphatase that is essential for virulence. SycH also binds two negative regulators of type III secretion, YscM1 and YscM2, both of which share significant sequence homology with the chaperone-binding domain of YopH. Here, the structure of a complex between SycH and a stable fragment of YscM2 that was designed on the basis of limited proteolysis experiments is presented. The overall fold of SycH is very similar to the structures of other homodimeric secretion chaperones that have been determined to date. YscM2 wraps around SycH in an extended fashion, with some secondary but no tertiary structure, assuming a conformation distinct from the globular fold that it is predicted to adopt in the absence of SycH.
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{{ABSTRACT_PUBMED_15333930}}


==About this Structure==
==About this Structure==
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[[Category: Chaperone]]
[[Category: Chaperone]]
[[Category: Type iii secretion]]
[[Category: Type iii secretion]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 10:21:25 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 10:26:40 2008''

Revision as of 07:26, 28 July 2008

File:1ttw.png

Template:STRUCTURE 1ttw

Crystal structure of the Yersinia Pestis type III secretion chaperone SycH in complex with a stable fragment of YscM2

Template:ABSTRACT PUBMED 15333930

About this Structure

1TTW is a Protein complex structure of sequences from Yersinia pestis co92. Full crystallographic information is available from OCA.

Reference

Structure of the Yersinia pestis type III secretion chaperone SycH in complex with a stable fragment of YscM2., Phan J, Tropea JE, Waugh DS, Acta Crystallogr D Biol Crystallogr. 2004 Sep;60(Pt 9):1591-9. Epub 2004, Aug 26. PMID:15333930

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