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| | ==Structure of the Type II secretion system pilotin AspS from Vibrio cholerae== | | ==Structure of the Type II secretion system pilotin AspS from Vibrio cholerae== |
| - | <StructureSection load='4ftf' size='340' side='right' caption='[[4ftf]], [[Resolution|resolution]] 1.48Å' scene=''> | + | <StructureSection load='4ftf' size='340' side='right'caption='[[4ftf]], [[Resolution|resolution]] 1.48Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4ftf]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Vibrio_cholera_569b Vibrio cholera 569b]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FTF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FTF FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4ftf]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_cholerae_569B Vibrio cholerae 569B]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FTF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FTF FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">VC395_1821, VC_1703 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=44104 Vibrio cholera 569B])</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=4ftf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ftf OCA], [https://pdbe.org/4ftf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ftf RCSB], [https://www.ebi.ac.uk/pdbsum/4ftf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ftf ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4ftf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ftf OCA], [http://pdbe.org/4ftf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4ftf RCSB], [http://www.ebi.ac.uk/pdbsum/4ftf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4ftf ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/Q9KRD9_VIBCH Q9KRD9_VIBCH] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Vibrio cholera 569b]] | + | [[Category: Large Structures]] |
| - | [[Category: Evans, T J]] | + | [[Category: Vibrio cholerae 569B]] |
| - | [[Category: Korotkov, K V]] | + | [[Category: Evans TJ]] |
| - | [[Category: Lipoprotein]] | + | [[Category: Korotkov KV]] |
| - | [[Category: Outer membrane]]
| + | |
| - | [[Category: Pfamb pb000779]]
| + | |
| - | [[Category: Pilotin]]
| + | |
| - | [[Category: Protein secretion]]
| + | |
| - | [[Category: Protein transport]]
| + | |
| - | [[Category: Secretin]]
| + | |
| - | [[Category: Secretin binding]]
| + | |
| Structural highlights
Function
Q9KRD9_VIBCH
Publication Abstract from PubMed
The Type II Secretion System (T2SS) is a molecular machine that drives the secretion of fully-folded protein substrates across the bacterial outer membrane. A key element in the machinery is the secretin: an integral, multimeric outer membrane protein that forms the secretion pore. We show that three distinct forms of T2SSs can be distinguished based on the sequence characteristics of their secretin pores. Detailed comparative analysis of two of these, the Klebsiella-type and Vibrio-type, showed them to be further distinguished by the pilotin that mediates their transport and assembly into the outer membrane. We have determined the crystal structure of the novel pilotin AspS from Vibrio cholerae, demonstrating convergent evolution wherein AspS is functionally equivalent and yet structurally unrelated to the pilotins found in Klebsiella and other bacteria. AspS binds to a specific targeting sequence in the Vibrio-type secretins, enhances the kinetics of secretin assembly, and homologs of AspS are found in all species of Vibrio as well those few strains of Escherichia and Shigella that have acquired a Vibrio-type T2SS.
Assembly of the Type II Secretion System such as Found in Vibrio cholerae Depends on the Novel Pilotin AspS.,Dunstan RA, Heinz E, Wijeyewickrema LC, Pike RN, Purcell AW, Evans TJ, Praszkier J, Robins-Browne RM, Strugnell RA, Korotkov KV, Lithgow T PLoS Pathog. 2013 Jan;9(1):e1003117. doi: 10.1371/journal.ppat.1003117. Epub 2013, Jan 10. PMID:23326233[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Dunstan RA, Heinz E, Wijeyewickrema LC, Pike RN, Purcell AW, Evans TJ, Praszkier J, Robins-Browne RM, Strugnell RA, Korotkov KV, Lithgow T. Assembly of the Type II Secretion System such as Found in Vibrio cholerae Depends on the Novel Pilotin AspS. PLoS Pathog. 2013 Jan;9(1):e1003117. doi: 10.1371/journal.ppat.1003117. Epub 2013, Jan 10. PMID:23326233 doi:http://dx.doi.org/10.1371/journal.ppat.1003117
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