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Open data
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Basic information
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Title | Chloroflexus aurantiacus ADP-bound ATP synthase, state 3 | |||||||||
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![]() | ATP synthesis / proton channels / proton-motive force / proton translocation / MEMBRANE PROTEIN | |||||||||
Function / homology | ![]() proton motive force-driven plasma membrane ATP synthesis / proton-transporting ATP synthase complex / proton motive force-driven ATP synthesis / : / : / H+-transporting two-sector ATPase / proton-transporting ATPase activity, rotational mechanism / proton-transporting ATP synthase activity, rotational mechanism / ADP binding / lipid binding ...proton motive force-driven plasma membrane ATP synthesis / proton-transporting ATP synthase complex / proton motive force-driven ATP synthesis / : / : / 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 | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.18 Å | |||||||||
![]() | Zhang X / Wu J / Xu X | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of ATP synthase from an early photosynthetic bacterium . Authors: Xin Zhang / Jingyi Wu / Zhenzhen Min / Jiamao Wang / Xin Hong / Xinkai Pei / Zihe Rao / Xiaoling Xu / ![]() Abstract: F-type ATP synthase (FF) catalyzes proton motive force-driven ATP synthesis in mitochondria, chloroplasts, and bacteria. Different from the mitochondrial and bacterial enzymes, FF from photosynthetic ...F-type ATP synthase (FF) catalyzes proton motive force-driven ATP synthesis in mitochondria, chloroplasts, and bacteria. Different from the mitochondrial and bacterial enzymes, FF from photosynthetic organisms have evolved diverse structural and mechanistic details to adapt to the light-dependent reactions. Although complete structure of chloroplast FF has been reported, no high-resolution structure of an FF from photosynthetic bacteria has been available. Here, we report cryo-EM structures of an intact and functionally competent FF from (FF), a filamentous anoxygenic phototrophic bacterium from the earliest branch of photosynthetic organisms. The structures of FF in its ADP-free and ADP-bound forms for three rotational states reveal a previously unrecognized architecture of ATP synthases. A pair of peripheral stalks connect to the F head through a dimer of δ-subunits, and associate with two membrane-embedded a-subunits that are asymmetrically positioned outside and clamp F's c-ring. The two a-subunits constitute two proton inlets on the periplasmic side and two proton outlets on the cytoplasmic side, endowing FF with unique proton translocation pathways that allow more protons being translocated relative to single a-subunit FF. Our findings deepen understanding of the architecture and proton translocation mechanisms of FF synthases and suggest innovative strategies for modulating their activities by altering the number of a-subunit. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
Map data | ![]() | 122.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 25.3 KB 25.3 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 13.2 KB | Display | ![]() |
Images | ![]() | 54.3 KB | ||
Filedesc metadata | ![]() | 7.2 KB | ||
Others | ![]() ![]() | 226.5 MB 226.5 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 1.2 MB | Display | ![]() |
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Full document | ![]() | 1.2 MB | Display | |
Data in XML | ![]() | 22.2 KB | Display | |
Data in CIF | ![]() | 28.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9ituMC ![]() 9itjC ![]() 9itkC ![]() 9itlC ![]() 9itmC ![]() 9itnC ![]() 9itoC ![]() 9itpC ![]() 9itqC ![]() 9itrC ![]() 9itsC ![]() 9ittC ![]() 9itvC ![]() 9itwC ![]() 9itxC ![]() 9ityC ![]() 9itzC ![]() 9iu0C M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.93 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
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Density Histograms |
-Half map: #2
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Density Histograms |
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Sample components
+Entire : ATP synthase
+Supramolecule #1: ATP synthase
+Macromolecule #1: ATP synthase subunit alpha
+Macromolecule #2: ATP synthase subunit beta
+Macromolecule #3: ATP synthase epsilon chain
+Macromolecule #4: ATP synthase subunit delta
+Macromolecule #5: ATP synthase gamma chain
+Macromolecule #6: ATP synthase subunit b
+Macromolecule #7: ATP synthase subunit a
+Macromolecule #8: ATP synthase subunit c
+Macromolecule #9: MAGNESIUM ION
+Macromolecule #10: ADENOSINE-5'-TRIPHOSPHATE
+Macromolecule #11: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #12: PHOSPHATE ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 8 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.6 µm / Nominal defocus min: 0.8 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |