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| | ==Crystal Structure of Vps4 MIT-Vfa1 MIM2== | | ==Crystal Structure of Vps4 MIT-Vfa1 MIM2== |
| - | <StructureSection load='4niq' size='340' side='right' caption='[[4niq]], [[Resolution|resolution]] 2.30Å' scene=''> | + | <StructureSection load='4niq' size='340' side='right'caption='[[4niq]], [[Resolution|resolution]] 2.30Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4niq]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Baker's_yeast Baker's yeast]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4NIQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4NIQ FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4niq]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4NIQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4NIQ FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CSC1, DID6, END13, GRD13, P9705.10, VPL4, VPS4, VPT10, YPR173C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast]), SYGP-ORF44, VFA1, YER128W ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast])</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=4niq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4niq OCA], [https://pdbe.org/4niq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4niq RCSB], [https://www.ebi.ac.uk/pdbsum/4niq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4niq 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=4niq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4niq OCA], [http://pdbe.org/4niq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4niq RCSB], [http://www.ebi.ac.uk/pdbsum/4niq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4niq ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/VPS4_YEAST VPS4_YEAST]] Involved in the transport of biosynthetic membrane proteins from the prevacuolar/endosomal compartment to the vacuole. Required for multivesicular body (MVB) protein sorting. Catalyzes the ATP-dependent dissociation of class E VPS proteins from endosomal membranes, such as the disassembly of the ESCRT-III complex.<ref>PMID:11329380</ref> <ref>PMID:9155008</ref> <ref>PMID:9606181</ref> [[http://www.uniprot.org/uniprot/VFA1_YEAST VFA1_YEAST]] VPS4-associated protein involved in trafficking to the vacuole. | + | [https://www.uniprot.org/uniprot/VPS4_YEAST VPS4_YEAST] Involved in the transport of biosynthetic membrane proteins from the prevacuolar/endosomal compartment to the vacuole. Required for multivesicular body (MVB) protein sorting. Catalyzes the ATP-dependent dissociation of class E VPS proteins from endosomal membranes, such as the disassembly of the ESCRT-III complex.<ref>PMID:11329380</ref> <ref>PMID:9155008</ref> <ref>PMID:9606181</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 4niq" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 4niq" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Vacuolar protein sorting-associated protein 3D structures|Vacuolar protein sorting-associated protein 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Baker's yeast]] | + | [[Category: Large Structures]] |
| - | [[Category: Vild, C J]] | + | [[Category: Saccharomyces cerevisiae S288C]] |
| - | [[Category: Xu, Z]] | + | [[Category: Vild CJ]] |
| - | [[Category: Cytosol]] | + | [[Category: Xu Z]] |
| - | [[Category: Protein transport]]
| + | |
| Structural highlights
Function
VPS4_YEAST Involved in the transport of biosynthetic membrane proteins from the prevacuolar/endosomal compartment to the vacuole. Required for multivesicular body (MVB) protein sorting. Catalyzes the ATP-dependent dissociation of class E VPS proteins from endosomal membranes, such as the disassembly of the ESCRT-III complex.[1] [2] [3]
Publication Abstract from PubMed
The endosomal sorting complexes required for transport (ESCRT) are responsible for multivesicular body biogenesis, membrane abscission during cytokinesis, and retroviral budding. They function as transiently assembled molecular complexes on the membrane, and their disassembly requires the action of the AAA-ATPase Vps4. Vps4 is regulated by a multitude of ESCRT and ESCRT-related proteins. Binding of these proteins to Vps4 is often mediated via the microtubule-interacting and trafficking (MIT) domain of Vps4. Recently, a new Vps4-binding protein Vfa1 was identified in a yeast genetic screen, where overexpression of Vfa1 caused defects in vacuolar morphology. However, the function of Vfa1 and its role in vacuolar biology were largely unknown. Here, we provide the first detailed biochemical and biophysical study of Vps4-Vfa1 interaction. The MIT domain of Vps4 binds to the C-terminal 17 residues of Vfa1. This interaction is of high affinity and greatly stimulates the ATPase activity of Vps4. The crystal structure of the Vps4-Vfa1 complex shows that Vfa1 adopts a canonical MIT-interacting motif 2 structure that has been observed previously in other Vps4-ESCRT interactions. These findings suggest that Vfa1 is a novel positive regulator of Vps4 function.
Vfa1 Binds to the N-terminal Microtubule-interacting and Trafficking (MIT) Domain of Vps4 and Stimulates Its ATPase Activity.,Vild CJ, Xu Z J Biol Chem. 2014 Apr 11;289(15):10378-86. doi: 10.1074/jbc.M113.532960. Epub, 2014 Feb 24. PMID:24567329[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Zahn R, Stevenson BJ, Schroder-Kohne S, Zanolari B, Riezman H, Munn AL. End13p/Vps4p is required for efficient transport from early to late endosomes in Saccharomyces cerevisiae. J Cell Sci. 2001 May;114(Pt 10):1935-47. PMID:11329380
- ↑ Babst M, Sato TK, Banta LM, Emr SD. Endosomal transport function in yeast requires a novel AAA-type ATPase, Vps4p. EMBO J. 1997 Apr 15;16(8):1820-31. PMID:9155008 doi:10.1093/emboj/16.8.1820
- ↑ Babst M, Wendland B, Estepa EJ, Emr SD. The Vps4p AAA ATPase regulates membrane association of a Vps protein complex required for normal endosome function. EMBO J. 1998 Jun 1;17(11):2982-93. PMID:9606181 doi:10.1093/emboj/17.11.2982
- ↑ Vild CJ, Xu Z. Vfa1 Binds to the N-terminal Microtubule-interacting and Trafficking (MIT) Domain of Vps4 and Stimulates Its ATPase Activity. J Biol Chem. 2014 Apr 11;289(15):10378-86. doi: 10.1074/jbc.M113.532960. Epub, 2014 Feb 24. PMID:24567329 doi:http://dx.doi.org/10.1074/jbc.M113.532960
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