|
|
| Line 3: |
Line 3: |
| | <StructureSection load='4wve' size='340' side='right'caption='[[4wve]], [[Resolution|resolution]] 1.60Å' scene=''> | | <StructureSection load='4wve' size='340' side='right'caption='[[4wve]], [[Resolution|resolution]] 1.60Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4wve]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Staa8 Staa8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WVE OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4WVE FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4wve]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus_subsp._aureus_NCTC_8325 Staphylococcus aureus subsp. aureus NCTC 8325]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WVE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4WVE FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3tiq|3tiq]], [[3tip|3tip]]</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=4wve FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wve OCA], [https://pdbe.org/4wve PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4wve RCSB], [https://www.ebi.ac.uk/pdbsum/4wve PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4wve ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">sasG, SAOUHSC_02798 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=93061 STAA8])</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=4wve FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wve OCA], [http://pdbe.org/4wve PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4wve RCSB], [http://www.ebi.ac.uk/pdbsum/4wve PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4wve ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/SASG_STAA8 SASG_STAA8]] Promotes adhesion of bacterial cells to human squamous nasal epithelial cells, a phenomenon which is likely to be important in nasal colonization. Forms short, extremely dense and thin fibrils all over the bacterial surface. Does not bind to either buccal cells or non-differentiated keratinocytes. Promotes cellular aggregation leading to biofilm formation.<ref>PMID:14523109</ref> <ref>PMID:17660408</ref> | + | [https://www.uniprot.org/uniprot/SASG_STAA8 SASG_STAA8] Promotes adhesion of bacterial cells to human squamous nasal epithelial cells, a phenomenon which is likely to be important in nasal colonization. Forms short, extremely dense and thin fibrils all over the bacterial surface. Does not bind to either buccal cells or non-differentiated keratinocytes. Promotes cellular aggregation leading to biofilm formation.<ref>PMID:14523109</ref> <ref>PMID:17660408</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
| Line 25: |
Line 23: |
| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Staa8]] | + | [[Category: Staphylococcus aureus subsp. aureus NCTC 8325]] |
| - | [[Category: Potts, J R]] | + | [[Category: Potts JR]] |
| - | [[Category: Whelan, F]] | + | [[Category: Whelan F]] |
| - | [[Category: Biofilm formation]]
| + | |
| - | [[Category: Single-layer beta sheet]]
| + | |
| - | [[Category: Structural protein]]
| + | |
| - | [[Category: Surface]]
| + | |
| Structural highlights
Function
SASG_STAA8 Promotes adhesion of bacterial cells to human squamous nasal epithelial cells, a phenomenon which is likely to be important in nasal colonization. Forms short, extremely dense and thin fibrils all over the bacterial surface. Does not bind to either buccal cells or non-differentiated keratinocytes. Promotes cellular aggregation leading to biofilm formation.[1] [2]
Publication Abstract from PubMed
Bacteria exploit surface proteins to adhere to other bacteria, surfaces and host cells. Such proteins need to project away from the bacterial surface and resist significant mechanical forces. SasG is a protein that forms extended fibrils on the surface of Staphylococcus aureus and promotes host adherence and biofilm formation. Here we show that although monomeric and lacking covalent cross-links, SasG maintains a highly extended conformation in solution. This extension is mediated through obligate folding cooperativity of the intrinsically disordered E domains that couple non-adjacent G5 domains thermodynamically, forming interfaces that are more stable than the domains themselves. Thus, counterintuitively, the elongation of the protein appears to be dependent on the inherent instability of its domains. The remarkable mechanical strength of SasG arises from tandemly arrayed 'clamp' motifs within the folded domains. Our findings reveal an elegant minimal solution for the assembly of monomeric mechano-resistant tethers of variable length.
Cooperative folding of intrinsically disordered domains drives assembly of a strong elongated protein.,Gruszka DT, Whelan F, Farrance OE, Fung HK, Paci E, Jeffries CM, Svergun DI, Baldock C, Baumann CG, Brockwell DJ, Potts JR, Clarke J Nat Commun. 2015 Jun 1;6:7271. doi: 10.1038/ncomms8271. PMID:26027519[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Roche FM, Meehan M, Foster TJ. The Staphylococcus aureus surface protein SasG and its homologues promote bacterial adherence to human desquamated nasal epithelial cells. Microbiology. 2003 Oct;149(Pt 10):2759-67. PMID:14523109
- ↑ Corrigan RM, Rigby D, Handley P, Foster TJ. The role of Staphylococcus aureus surface protein SasG in adherence and biofilm formation. Microbiology. 2007 Aug;153(Pt 8):2435-46. PMID:17660408 doi:http://dx.doi.org/10.1099/mic.0.2007/006676-0
- ↑ Gruszka DT, Whelan F, Farrance OE, Fung HK, Paci E, Jeffries CM, Svergun DI, Baldock C, Baumann CG, Brockwell DJ, Potts JR, Clarke J. Cooperative folding of intrinsically disordered domains drives assembly of a strong elongated protein. Nat Commun. 2015 Jun 1;6:7271. doi: 10.1038/ncomms8271. PMID:26027519 doi:http://dx.doi.org/10.1038/ncomms8271
|
