5gas
From Proteopedia
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== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/VATF_THET8 VATF_THET8]] Produces ATP from ADP in the presence of a proton gradient across the membrane. [[http://www.uniprot.org/uniprot/VATE_THET8 VATE_THET8]] Produces ATP from ADP in the presence of a proton gradient across the membrane. [[http://www.uniprot.org/uniprot/VATC_THET8 VATC_THET8]] Produces ATP from ADP in the presence of a proton gradient across the membrane. [[http://www.uniprot.org/uniprot/VATB_THET2 VATB_THET2]] Produces ATP from ADP in the presence of a proton gradient across the membrane. The V-type beta chain is a regulatory subunit. [[http://www.uniprot.org/uniprot/VATA_THET8 VATA_THET8]] Produces ATP from ADP in the presence of a proton gradient across the membrane. The V-type alpha chain is a catalytic subunit. [[http://www.uniprot.org/uniprot/VATD_THET2 VATD_THET2]] Produces ATP from ADP in the presence of a proton gradient across the membrane. | [[http://www.uniprot.org/uniprot/VATF_THET8 VATF_THET8]] Produces ATP from ADP in the presence of a proton gradient across the membrane. [[http://www.uniprot.org/uniprot/VATE_THET8 VATE_THET8]] Produces ATP from ADP in the presence of a proton gradient across the membrane. [[http://www.uniprot.org/uniprot/VATC_THET8 VATC_THET8]] Produces ATP from ADP in the presence of a proton gradient across the membrane. [[http://www.uniprot.org/uniprot/VATB_THET2 VATB_THET2]] Produces ATP from ADP in the presence of a proton gradient across the membrane. The V-type beta chain is a regulatory subunit. [[http://www.uniprot.org/uniprot/VATA_THET8 VATA_THET8]] Produces ATP from ADP in the presence of a proton gradient across the membrane. The V-type alpha chain is a catalytic subunit. [[http://www.uniprot.org/uniprot/VATD_THET2 VATD_THET2]] Produces ATP from ADP in the presence of a proton gradient across the membrane. | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Rotary ATPases couple ATP synthesis or hydrolysis to proton translocation across a membrane. However, understanding proton translocation has been hampered by a lack of structural information for the membrane-embedded a subunit. The V/A-ATPase from the eubacteriumThermus thermophilusis similar in structure to the eukaryotic V-ATPase but has a simpler subunit composition and functions in vivo to synthesize ATP rather than pump protons. We determined theT. thermophilusV/A-ATPase structure by cryo-EM at 6.4 A resolution. Evolutionary covariance analysis allowed tracing of the a subunit sequence within the map, providing a complete model of the rotary ATPase. Comparing the membrane-embedded regions of theT. thermophilusV/A-ATPase and eukaryotic V-ATPase fromSaccharomyces cerevisiaeallowed identification of the alpha-helices that belong to the a subunit and revealed the existence of previously unknown subunits in the eukaryotic enzyme. Subsequent evolutionary covariance analysis enabled construction of a model of the a subunit in theS. cerevisaeV-ATPase that explains numerous biochemical studies of that enzyme. Comparing the two a subunit structures determined here with a structure of the distantly related a subunit from the bovine F-type ATP synthase revealed a conserved pattern of residues, suggesting a common mechanism for proton transport in all rotary ATPases. | ||
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| + | Models for the a subunits of the Thermus thermophilus V/A-ATPase and Saccharomyces cerevisiae V-ATPase enzymes by cryo-EM and evolutionary covariance.,Schep DG, Zhao J, Rubinstein JL Proc Natl Acad Sci U S A. 2016 Mar 22;113(12):3245-50. doi:, 10.1073/pnas.1521990113. Epub 2016 Mar 7. PMID:26951669<ref>PMID:26951669</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 5gas" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Revision as of 16:42, 10 May 2016
Thermus thermophilus V/A-ATPase, conformation 2
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