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| | ==Crystal Structure of the subunit DF-assembly of the eukaryotic V-ATPase.== | | ==Crystal Structure of the subunit DF-assembly of the eukaryotic V-ATPase.== |
| - | <StructureSection load='4rnd' size='340' side='right' caption='[[4rnd]], [[Resolution|resolution]] 3.18Å' scene=''> | + | <StructureSection load='4rnd' size='340' side='right'caption='[[4rnd]], [[Resolution|resolution]] 3.18Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4rnd]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RND OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4RND FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4rnd]] 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=4RND OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4RND FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><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]] 3.18Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4ix9|4ix9]]</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='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=4rnd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rnd OCA], [http://pdbe.org/4rnd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4rnd RCSB], [http://www.ebi.ac.uk/pdbsum/4rnd PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4rnd ProSAT]</span></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=4rnd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rnd OCA], [https://pdbe.org/4rnd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4rnd RCSB], [https://www.ebi.ac.uk/pdbsum/4rnd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4rnd ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/VATD_YEAST VATD_YEAST]] Subunit of the peripheral V1 complex of vacuolar ATPase. V-ATPase is responsible for acidifying a variety of intracellular compartments in eukaryotic cells, thus providing most of the energy required for transport processes in the vacuolar system. [[http://www.uniprot.org/uniprot/VATF_YEAST VATF_YEAST]] Subunit of the peripheral V1 complex of vacuolar ATPase essential for assembly or catalytic function. V-ATPase is responsible for acidifying a variety of intracellular compartments in eukaryotic cells. | + | [https://www.uniprot.org/uniprot/VATD_YEAST VATD_YEAST] Subunit of the peripheral V1 complex of vacuolar ATPase. V-ATPase is responsible for acidifying a variety of intracellular compartments in eukaryotic cells, thus providing most of the energy required for transport processes in the vacuolar system. |
| - | <div style="background-color:#fffaf0;">
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| - | == Publication Abstract from PubMed ==
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| - | Eukaryotic V1VO-ATPases hydrolyze ATP in the V1 domain coupled to ion pumping in VO. A unique mode of regulation of V-ATPases is the reversible disassembly of V1 and VO, which reduces ATPase activity and causes silencing of ion conduction. The subunits D and F are proposed to be key in these enzymatic processes. Here, we describe the structures of two conformations of the subunit DF assembly of Saccharomyces cerevisiae (ScDF) V-ATPase at 3.1 A resolution. Subunit D (ScD) consists of a long pair of alpha-helices connected by a short helix ((79)IGYQVQE(85)) as well as a beta-hairpin region, which is flanked by two flexible loops. The long pair of helices is composed of the N-terminal alpha-helix and the C-terminal helix, showing structural alterations in the two ScDF structures. The entire subunit F (ScF) consists of an N-terminal domain of four beta-strands (beta1-beta4) connected by four alpha-helices (alpha1-alpha4). alpha1 and beta2 are connected via the loop (26)GQITPETQEK(35), which is unique in eukaryotic V-ATPases. Adjacent to the N-terminal domain is a flexible loop, followed by a C-terminal alpha-helix (alpha5). A perpendicular and extended conformation of helix alpha5 was observed in the two crystal structures and in solution x-ray scattering experiments, respectively. Fitted into the nucleotide-bound A3B3 structure of the related A-ATP synthase from Enterococcus hirae, the arrangements of the ScDF molecules reflect their central function in ATPase-coupled ion conduction. Furthermore, the flexibility of the terminal helices of both subunits as well as the loop (26)GQITPETQEK(35) provides information about the regulatory step of reversible V1VO disassembly.
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| - | Crystal Structure of Subunits D and F in Complex Gives Insight into Energy Transmission of the Eukaryotic V-ATPase from Saccharomyces cerevisiae.,Balakrishna AM, Basak S, Manimekalai MS, Gruber G J Biol Chem. 2015 Feb 6;290(6):3183-96. doi: 10.1074/jbc.M114.622688. Epub 2014, Dec 12. PMID:25505269<ref>PMID:25505269</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 4rnd" style="background-color:#fffaf0;"></div>
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| | ==See Also== | | ==See Also== |
| - | *[[ATPase|ATPase]] | + | *[[ATPase 3D structures|ATPase 3D structures]] |
| - | == References ==
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| - | <references/>
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Balakrishna, A M]] | + | [[Category: Large Structures]] |
| - | [[Category: Basak, S]] | + | [[Category: Saccharomyces cerevisiae S288C]] |
| - | [[Category: Gruber, G]] | + | [[Category: Balakrishna AM]] |
| - | [[Category: Alpha helical]] | + | [[Category: Basak S]] |
| - | [[Category: Coupling]] | + | [[Category: Gruber G]] |
| - | [[Category: Hydrolase]]
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| - | [[Category: Regulatory]]
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| - | [[Category: Rossmann fold]]
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