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| | ==Crystallographic forms of the Vps75 tetramer== | | ==Crystallographic forms of the Vps75 tetramer== |
| - | <StructureSection load='5agc' size='340' side='right' caption='[[5agc]], [[Resolution|resolution]] 4.00Å' scene=''> | + | <StructureSection load='5agc' size='340' side='right'caption='[[5agc]], [[Resolution|resolution]] 4.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5agc]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5AGC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5AGC FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5agc]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5AGC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5AGC FirstGlance]. <br> |
| - | </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=5agc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5agc OCA], [http://pdbe.org/5agc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5agc RCSB], [http://www.ebi.ac.uk/pdbsum/5agc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5agc ProSAT]</span></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]] 4Å</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=5agc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5agc OCA], [https://pdbe.org/5agc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5agc RCSB], [https://www.ebi.ac.uk/pdbsum/5agc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5agc ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/VPS75_YEAST VPS75_YEAST]] Histone chaperone which acts as a cofactor stimulating the histone H3 'Lys-56' acetylation by RTT109. May be involved in vacuolar proteins sorting.<ref>PMID:12134085</ref> <ref>PMID:17320445</ref> | + | [https://www.uniprot.org/uniprot/VPS75_YEAST VPS75_YEAST] Histone chaperone which acts as a cofactor stimulating the histone H3 'Lys-56' acetylation by RTT109. May be involved in vacuolar proteins sorting.<ref>PMID:12134085</ref> <ref>PMID:17320445</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 5agc" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 5agc" 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: Hammond, C M]] | + | [[Category: Large Structures]] |
| - | [[Category: Owen-Hughes, T]] | + | [[Category: Saccharomyces cerevisiae]] |
| - | [[Category: Sundaramoorthy, R]] | + | [[Category: Hammond CM]] |
| - | [[Category: Chromatin]] | + | [[Category: Owen-Hughes T]] |
| - | [[Category: Histone chaperone]] | + | [[Category: Sundaramoorthy R]] |
| - | [[Category: Nap1]]
| + | |
| - | [[Category: Transport protein]]
| + | |
| - | [[Category: Vacuolar protein sorting 75]]
| + | |
| - | [[Category: Vps75]]
| + | |
| Structural highlights
Function
VPS75_YEAST Histone chaperone which acts as a cofactor stimulating the histone H3 'Lys-56' acetylation by RTT109. May be involved in vacuolar proteins sorting.[1] [2]
Publication Abstract from PubMed
Vps75 is a histone chaperone that has been historically characterized as homodimer by X-ray crystallography. In this study, we present a crystal structure containing two related tetrameric forms of Vps75 within the crystal lattice. We show Vps75 associates with histones in multiple oligomers. In the presence of equimolar H3-H4 and Vps75, the major species is a reconfigured Vps75 tetramer bound to a histone H3-H4 tetramer. However, in the presence of excess histones, a Vps75 dimer bound to a histone H3-H4 tetramer predominates. We show the Vps75-H3-H4 interaction is compatible with the histone chaperone Asf1 and deduce a structural model of the Vps75-Asf1-H3-H4 (VAH) co-chaperone complex using the Pulsed Electron-electron Double Resonance (PELDOR) technique and cross-linking MS/MS distance restraints. The model provides a molecular basis for the involvement of both Vps75 and Asf1 in Rtt109 catalysed histone H3 K9 acetylation. In the absence of Asf1 this model can be used to generate a complex consisting of a reconfigured Vps75 tetramer bound to a H3-H4 tetramer. This provides a structural explanation for many of the complexes detected biochemically and illustrates the ability of Vps75 to interact with dimeric or tetrameric H3-H4 using the same interaction surface.
The histone chaperone Vps75 forms multiple oligomeric assemblies capable of mediating exchange between histone H3-H4 tetramers and Asf1-H3-H4 complexes.,Hammond CM, Sundaramoorthy R, Larance M, Lamond A, Stevens MA, El-Mkami H, Norman DG, Owen-Hughes T Nucleic Acids Res. 2016 Apr 1. pii: gkw209. PMID:27036862[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Bonangelino CJ, Chavez EM, Bonifacino JS. Genomic screen for vacuolar protein sorting genes in Saccharomyces cerevisiae. Mol Biol Cell. 2002 Jul;13(7):2486-501. PMID:12134085 doi:http://dx.doi.org/10.1091/mbc.02-01-0005
- ↑ Tsubota T, Berndsen CE, Erkmann JA, Smith CL, Yang L, Freitas MA, Denu JM, Kaufman PD. Histone H3-K56 acetylation is catalyzed by histone chaperone-dependent complexes. Mol Cell. 2007 Mar 9;25(5):703-12. Epub 2007 Feb 22. PMID:17320445 doi:S1097-2765(07)00086-X
- ↑ Hammond CM, Sundaramoorthy R, Larance M, Lamond A, Stevens MA, El-Mkami H, Norman DG, Owen-Hughes T. The histone chaperone Vps75 forms multiple oligomeric assemblies capable of mediating exchange between histone H3-H4 tetramers and Asf1-H3-H4 complexes. Nucleic Acids Res. 2016 Apr 1. pii: gkw209. PMID:27036862 doi:http://dx.doi.org/10.1093/nar/gkw209
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