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| <StructureSection load='5tuh' size='340' side='right'caption='[[5tuh]], [[Resolution|resolution]] 1.93Å' scene=''> | | <StructureSection load='5tuh' size='340' side='right'caption='[[5tuh]], [[Resolution|resolution]] 1.93Å' scene=''> |
| == Structural highlights == | | == Structural highlights == |
| <table><tr><td colspan='2'>[[5tuh]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_33909 Atcc 33909]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TUH OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5TUH FirstGlance]. <br> | | <table><tr><td colspan='2'>[[5tuh]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Sulfolobus_acidocaldarius Sulfolobus acidocaldarius]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TUH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5TUH FirstGlance]. <br> |
| </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> | | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.929Å</td></tr> |
| <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5tug|5tug]]</td></tr> | | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> |
| <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ATY89_00610, ATZ20_03655 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2285 ATCC 33909])</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=5tuh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tuh OCA], [https://pdbe.org/5tuh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5tuh RCSB], [https://www.ebi.ac.uk/pdbsum/5tuh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5tuh 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=5tuh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tuh OCA], [http://pdbe.org/5tuh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5tuh RCSB], [http://www.ebi.ac.uk/pdbsum/5tuh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5tuh ProSAT]</span></td></tr> | |
| </table> | | </table> |
| <div style="background-color:#fffaf0;">
| | == Function == |
| == Publication Abstract from PubMed == | | [https://www.uniprot.org/uniprot/Q4J9K7_SULAC Q4J9K7_SULAC] |
| Motility structures are vital in all three domains of life. In Archaea, motility is mediated by the archaellum, a rotating type IV pilus-like structure that is a unique nanomachine for swimming motility in nature. Whereas periplasmic FlaF binds the surface layer (S-layer), the structure, assembly and roles of other periplasmic components remain enigmatic, limiting our knowledge of the archaellum's functional interactions. Here, we find that the periplasmic protein FlaG and the association with its paralogue FlaF are essential for archaellation and motility. Therefore, we determine the crystal structure of Sulfolobus acidocaldarius soluble FlaG (sFlaG), which reveals a beta-sandwich fold resembling the S-layer-interacting FlaF soluble domain (sFlaF). Furthermore, we solve the sFlaG2-sFlaF2 co-crystal structure, define its heterotetrameric complex in solution by small-angle X-ray scattering and find that mutations that disrupt the complex abolish motility. Interestingly, the sFlaF and sFlaG of Pyrococcus furiosus form a globular complex, whereas sFlaG alone forms a filament, indicating that FlaF can regulate FlaG filament assembly. Strikingly, Sulfolobus cells that lack the S-layer component bound by FlaF assemble archaella but cannot swim. These collective results support a model where a FlaG filament capped by a FlaG-FlaF complex anchors the archaellum to the S-layer to allow motility.
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| The structure of the periplasmic FlaG-FlaF complex and its essential role for archaellar swimming motility.,Tsai CL, Tripp P, Sivabalasarma S, Zhang C, Rodriguez-Franco M, Wipfler RL, Chaudhury P, Banerjee A, Beeby M, Whitaker RJ, Tainer JA, Albers SV Nat Microbiol. 2020 Jan;5(1):216-225. doi: 10.1038/s41564-019-0622-3. Epub 2019, Dec 16. PMID:31844299<ref>PMID:31844299</ref>
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| From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| </div>
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| <div class="pdbe-citations 5tuh" style="background-color:#fffaf0;"></div>
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| ==See Also== | | ==See Also== |
| *[[Flagellar protein 3D structures|Flagellar protein 3D structures]] | | *[[Flagellar protein 3D structures|Flagellar protein 3D structures]] |
| == References ==
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| <references/>
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| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
| [[Category: Atcc 33909]]
| |
| [[Category: Large Structures]] | | [[Category: Large Structures]] |
| [[Category: Tainer, J A]] | | [[Category: Sulfolobus acidocaldarius]] |
| [[Category: Tsai, C L]] | | [[Category: Tainer JA]] |
| [[Category: Beta-sandwich fold archaellum assembly subunit stator protein motor protein]] | | [[Category: Tsai C-L]] |
| [[Category: Membrane protein]]
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| [[Category: Motor protein]]
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