1kdl
From Proteopedia
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|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
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| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1kdl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kdl OCA], [http://www.ebi.ac.uk/pdbsum/1kdl PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1kdl RCSB]</span> | ||
}} | }} | ||
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[[Category: yopd]] | [[Category: yopd]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:47:03 2008'' |
Revision as of 18:47, 30 March 2008
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Solution structure of the amphipathic domain of YopD from Yersinia
Overview
To establish an infection, Yersinia pseudotuberculosis utilizes a plasmid-encoded type III secretion machine that permits the translocation of several anti-host factors into the cytosol of target eukaryotic cells. Secreted YopD is essential for this process. Pre-secretory stabilization of YopD is mediated by an interaction with its cognate chaperone, LcrH. YopD possesses LcrH binding domains located in the N-terminus and in a predicted amphipathic domain located near the C-terminus. This latter domain is also critical for Yersinia virulence. In this study, we designed synthetic peptides encompassing the C-terminal amphipathic domain of YopD. A solution structure of YopD278-300, a peptide that strongly interacted with LcrH, was obtained by NMR methods. The structure is composed of a well-defined amphipathic alpha helix ranging from Phe280 to Tyr291, followed by a type I beta turn between residues Val292 and His295. The C-terminal truncated peptides, YopD278-292 and YopD271-292, lacked helical structure, implicating the beta turn in helix stability. An interaction between YopD278-300 and its cognate chaperone, LcrH, was observed by NMR through line-broadening effects and chemical shift differences between the free peptide and the peptide-LcrH complex. These effects were not observed for the unstructured peptide, YopD278-292, which confirms that the alpha helical structure of the YopD amphipathic domain is a critical binding region of LcrH.
About this Structure
1KDL is a Single protein structure of sequence from [1]. Full crystallographic information is available from OCA.
Reference
Conformational analysis by CD and NMR spectroscopy of a peptide encompassing the amphipathic domain of YopD from Yersinia., Tengel T, Sethson I, Francis MS, Eur J Biochem. 2002 Aug;269(15):3659-68. PMID:12153562
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