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| | <StructureSection load='1tyv' size='340' side='right'caption='[[1tyv]], [[Resolution|resolution]] 1.80Å' scene=''> | | <StructureSection load='1tyv' size='340' side='right'caption='[[1tyv]], [[Resolution|resolution]] 1.80Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1tyv]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Bpp22 Bpp22]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TYV OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1TYV FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1tyv]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Salmonella_virus_P22 Salmonella virus P22]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TYV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TYV FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PHAGE P22 GENE 9 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10754 BPP22])</td></tr> | + | </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=1tyv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tyv OCA], [https://pdbe.org/1tyv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1tyv RCSB], [https://www.ebi.ac.uk/pdbsum/1tyv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1tyv ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1tyv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tyv OCA], [http://pdbe.org/1tyv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1tyv RCSB], [http://www.ebi.ac.uk/pdbsum/1tyv PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1tyv ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/TSPE_BPP22 TSPE_BPP22]] Non-covalently bound to the neck of the phage capsid and mediating attachment of the viral particle to host cell-surface polysaccharide. It displays endorhamnosidase enzymatic activity, hydrolyzing the alpha-1,3-O-glycosidic linkage between rhamnose and galactose of the O-antigen polysaccharide.<ref>PMID:12837775</ref> <ref>PMID:20817910</ref> | + | [[https://www.uniprot.org/uniprot/FIBER_BPP22 FIBER_BPP22]] Structural component of the short non-contractile tail. The tail comprises six fibers that mediate primary attachment to the host cell lipopolysaccharides (LPS) and display endorhamnosidase enzymatic activity, hydrolyzing the alpha-1,3-O-glycosidic linkage between rhamnose and galactose of the O-antigen polysaccharide. Digestion of the LPS brings the capsid near the cell outer membrane.<ref>PMID:12837775</ref> <ref>PMID:20817910</ref> |
| | <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: Bpp22]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Huber, R]] | + | [[Category: Salmonella virus P22]] |
| - | [[Category: Steinbacher, S]] | + | [[Category: Huber R]] |
| - | [[Category: Binding protein lipopolysaccharide]] | + | [[Category: Steinbacher S]] |
| - | [[Category: Cell receptor]]
| + | |
| - | [[Category: Complex]]
| + | |
| - | [[Category: Endoglycosidase carbohydrate]]
| + | |
| - | [[Category: Receptor]]
| + | |
| - | [[Category: Recognition]]
| + | |
| - | [[Category: Viral adhesion protein]]
| + | |
| Structural highlights
Function
[FIBER_BPP22] Structural component of the short non-contractile tail. The tail comprises six fibers that mediate primary attachment to the host cell lipopolysaccharides (LPS) and display endorhamnosidase enzymatic activity, hydrolyzing the alpha-1,3-O-glycosidic linkage between rhamnose and galactose of the O-antigen polysaccharide. Digestion of the LPS brings the capsid near the cell outer membrane.[1] [2]
Publication Abstract from PubMed
The O-antigenic repeating units of lipopolysaccharides from Salmonella serogroups A, B, and D1 serve as receptors for the phage P22 tailspike protein, which also has receptor destroying endoglycosidase (endorhamnosidase) activity, integrating the functions of both hemagglutinin and neuraminidase in influenza virus. Crystal structures of the tailspike protein in complex with oligosaccharides, comprising two O-antigenic repeating units from Salmonella typhimurium, Salmonella enteritidis, and Salmonella typhi 253Ty were determined at 1.8 A resolution. The active-site topology with Asp-392, Asp-395, and Glu-359 as catalytic residues was identified. Kinetics of binding and cleavage suggest a role of the receptor destroying endorhamnosidase activity primarily for detachment of newly assembled phages.
Crystal structure of phage P22 tailspike protein complexed with Salmonella sp. O-antigen receptors.,Steinbacher S, Baxa U, Miller S, Weintraub A, Seckler R, Huber R Proc Natl Acad Sci U S A. 1996 Oct 1;93(20):10584-8. PMID:8855221[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Weigele PR, Scanlon E, King J. Homotrimeric, beta-stranded viral adhesins and tail proteins. J Bacteriol. 2003 Jul;185(14):4022-30. PMID:12837775
- ↑ Andres D, Hanke C, Baxa U, Seul A, Barbirz S, Seckler R. Tailspike interactions with lipopolysaccharide effect DNA ejection from phage P22 particles in vitro. J Biol Chem. 2010 Nov 19;285(47):36768-75. doi: 10.1074/jbc.M110.169003. Epub, 2010 Sep 3. PMID:20817910 doi:http://dx.doi.org/10.1074/jbc.M110.169003
- ↑ Steinbacher S, Baxa U, Miller S, Weintraub A, Seckler R, Huber R. Crystal structure of phage P22 tailspike protein complexed with Salmonella sp. O-antigen receptors. Proc Natl Acad Sci U S A. 1996 Oct 1;93(20):10584-8. PMID:8855221
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