+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-21238 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Chloroplast ATP synthase (C2, CF1FO) | |||||||||
Map data | C2, CF1FO | |||||||||
Sample |
| |||||||||
Keywords | CF1FO / ATP synthase / PHOTOSYNTHESIS / PHOTOSYNTHESIS-TRANSLOCASE complex | |||||||||
Function / homology | Function and homology information : / chloroplast thylakoid membrane / proton-transporting ATP synthase complex, coupling factor F(o) / proton motive force-driven ATP synthesis / proton motive force-driven mitochondrial ATP synthesis / proton transmembrane transporter activity / proton-transporting ATP synthase complex, catalytic core F(1) / H+-transporting two-sector ATPase / proton-transporting ATPase activity, rotational mechanism / proton-transporting ATP synthase activity, rotational mechanism ...: / chloroplast thylakoid membrane / proton-transporting ATP synthase complex, coupling factor F(o) / proton motive force-driven ATP synthesis / proton motive force-driven mitochondrial ATP synthesis / proton transmembrane transporter activity / proton-transporting ATP synthase complex, catalytic core F(1) / H+-transporting two-sector ATPase / proton-transporting ATPase activity, rotational mechanism / proton-transporting ATP synthase activity, rotational mechanism / ADP binding / lipid binding / ATP hydrolysis activity / ATP binding / plasma membrane Similarity search - Function | |||||||||
Biological species | Spinacia oleracea (spinach) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 7.08 Å | |||||||||
Authors | Yang J-H / Williams D | |||||||||
Citation | Journal: Commun Biol / Year: 2020 Title: Structural basis of redox modulation on chloroplast ATP synthase. Authors: Jay-How Yang / Dewight Williams / Eaazhisai Kandiah / Petra Fromme / Po-Lin Chiu / Abstract: In higher plants, chloroplast ATP synthase has a unique redox switch on its γ subunit that modulates enzyme activity to limit ATP hydrolysis at night. To understand the molecular details of the ...In higher plants, chloroplast ATP synthase has a unique redox switch on its γ 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 γ subunit introduces a torsional constraint to stabilize the two β 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. | |||||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_21238.map.gz | 6.1 MB | EMDB map data format | |
---|---|---|---|---|
Header (meta data) | emd-21238-v30.xml emd-21238.xml | 19.8 KB 19.8 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_21238_fsc.xml | 10.4 KB | Display | FSC data file |
Images | emd_21238.png | 50.3 KB | ||
Filedesc metadata | emd-21238.cif.gz | 6.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-21238 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-21238 | HTTPS FTP |
-Validation report
Summary document | emd_21238_validation.pdf.gz | 389.5 KB | Display | EMDB validaton report |
---|---|---|---|---|
Full document | emd_21238_full_validation.pdf.gz | 389 KB | Display | |
Data in XML | emd_21238_validation.xml.gz | 11.4 KB | Display | |
Data in CIF | emd_21238_validation.cif.gz | 15 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-21238 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-21238 | HTTPS FTP |
-Related structure data
Related structure data | 6vm4MC 6vm1C 6vmbC 6vmdC 6vmgC 6vofC 6vogC 6vohC 6voiC 6vojC 6vokC 6volC 6vomC 6vonC 6vooC M: atomic model generated by this map C: citing same article (ref.) |
---|---|
Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
---|---|
Related items in Molecule of the Month |
-Map
File | Download / File: emd_21238.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | C2, CF1FO | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.18 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-Sample components
+Entire : Chloroplast ATP synthase
+Supramolecule #1: Chloroplast ATP synthase
+Macromolecule #1: ATP synthase subunit alpha, chloroplastic
+Macromolecule #2: ATP synthase subunit beta, chloroplastic
+Macromolecule #3: ATP synthase subunit b, chloroplastic
+Macromolecule #4: ATP synthase subunit b', chloroplastic
+Macromolecule #5: ATP synthase subunit a, chloroplastic
+Macromolecule #6: ATP synthase delta chain, chloroplastic
+Macromolecule #7: ATP synthase epsilon chain, chloroplastic
+Macromolecule #8: ATP synthase gamma chain, chloroplastic
+Macromolecule #9: ATP synthase subunit c, chloroplastic
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 8 |
---|---|
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 43.5 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 70.0 µm / Calibrated magnification: 48077 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: -4.0 µm / Nominal defocus min: -1.5 µm / Nominal magnification: 22500 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
+Image processing
-Atomic model buiding 1
Refinement | Protocol: BACKBONE TRACE |
---|---|
Output model | PDB-6vm4: |