6vof: Difference between revisions
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==== | ==Chloroplast ATP synthase (O2, CF1FO)== | ||
<StructureSection load='6vof' size='340' side='right'caption='[[6vof]]' scene=''> | <StructureSection load='6vof' size='340' side='right'caption='[[6vof]], [[Resolution|resolution]] 4.51Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id= OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[6vof]] is a 26 chain structure with sequence from [https://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6VOF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6VOF FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 4.51Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene></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=6vof FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6vof OCA], [https://pdbe.org/6vof PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6vof RCSB], [https://www.ebi.ac.uk/pdbsum/6vof PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6vof ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/ATPF_SPIOL ATPF_SPIOL] F(1)F(0) ATP synthase produces ATP from ADP in the presence of a proton or sodium gradient. F-type ATPases consist of two structural domains, F(1) containing the extramembraneous catalytic core and F(0) containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation. Component of the F(0) channel, it forms part of the peripheral stalk, linking F(1) to F(0). | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
In higher plants, chloroplast ATP synthase has a unique redox switch on its gamma subunit that modulates enzyme activity to limit ATP hydrolysis at night. To understand the molecular details of the redox modulation, we used single-particle cryo-EM to determine the structures of spinach chloroplast ATP synthase in both reduced and oxidized states. The disulfide linkage of the oxidized gamma subunit introduces a torsional constraint to stabilize the two beta hairpin structures. Once reduced, free cysteines alleviate this constraint, resulting in a concerted motion of the enzyme complex and a smooth transition between rotary states to facilitate the ATP synthesis. We added an uncompetitive inhibitor, tentoxin, in the reduced sample to limit the flexibility of the enzyme and obtained high-resolution details. Our cryo-EM structures provide mechanistic insight into the redox modulation of the energy regulation activity of chloroplast ATP synthase. | |||
Structural basis of redox modulation on chloroplast ATP synthase.,Yang JH, Williams D, Kandiah E, Fromme P, Chiu PL Commun Biol. 2020 Sep 2;3(1):482. doi: 10.1038/s42003-020-01221-8. PMID:32879423<ref>PMID:32879423</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 6vof" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[ATPase 3D structures|ATPase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Spinacia oleracea]] | ||
[[Category: Chiu P-L]] | |||
[[Category: Fromme P]] | |||
[[Category: Kandiah E]] | |||
[[Category: Williams D]] | |||
[[Category: Yang J-H]] | |||
Latest revision as of 11:20, 30 October 2024
Chloroplast ATP synthase (O2, CF1FO)
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