1y9l: Difference between revisions
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|PDB= 1y9l |SIZE=350|CAPTION= <scene name='initialview01'>1y9l</scene>, resolution 1.50Å | |PDB= 1y9l |SIZE=350|CAPTION= <scene name='initialview01'>1y9l</scene>, resolution 1.50Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene> | |LIGAND= <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=UND:UNDECANE'>UND</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= mxiM ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=623 Shigella flexneri]) | |GENE= mxiM ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=623 Shigella flexneri]) | ||
|DOMAIN= | |||
|RELATEDENTRY=[[1y9t|1Y9T]] | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1y9l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1y9l OCA], [http://www.ebi.ac.uk/pdbsum/1y9l PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1y9l RCSB]</span> | |||
}} | }} | ||
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[[Category: Pfuetzer, R A.]] | [[Category: Pfuetzer, R A.]] | ||
[[Category: Strynadka, N C.]] | [[Category: Strynadka, N C.]] | ||
[[Category: cracked beta barrel]] | [[Category: cracked beta barrel]] | ||
[[Category: mixed alpha/beta]] | [[Category: mixed alpha/beta]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 01:00:32 2008'' | ||
Revision as of 22:00, 30 March 2008
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| 1y9l, resolution 1.50Å | |||||||||||||
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| Ligands: | ACT, UND | ||||||||||||
| Gene: | mxiM (Shigella flexneri) | ||||||||||||
| Related: | 1Y9T
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
The X-ray structure of an secretion system protein
Overview
The ability to translocate virulence proteins into host cells through a type III secretion apparatus (TTSS) is a hallmark of several Gram-negative pathogens including Shigella, Salmonella, Yersinia, Pseudomonas, and enteropathogenic Escherichia coli. In common with other types of bacterial secretion apparatus, the assembly of the TTSS complex requires the preceding formation of its integral outer membrane secretin ring component. We have determined at 1.5 A the structure of MxiM28-142, the Shigella pilot protein that is essential for the assembly and membrane association of the Shigella secretin, MxiD. This represents the first atomic structure of a secretin pilot protein from the several bacterial secretion systems containing an orthologous secretin component. A deep hydrophobic cavity is observed in the novel 'cracked barrel' structure of MxiM, providing a specific binding domain for the acyl chains of bacterial lipids, a proposal that is supported by our various lipid/MxiM complex structures. Isothermal titration analysis shows that the C-terminal domain of the secretin, MxiD525-570, hinders lipid binding to MxiM.
About this Structure
1Y9L is a Single protein structure of sequence from Shigella flexneri. Full crystallographic information is available from OCA.
Reference
Structure and biochemical analysis of a secretin pilot protein., Lario PI, Pfuetzner RA, Frey EA, Creagh L, Haynes C, Maurelli AT, Strynadka NC, EMBO J. 2005 Mar 23;24(6):1111-21. Epub 2005 Mar 10. PMID:15775974
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