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Yorodumi- PDB-7xkq: F1 domain of FoF1-ATPase with the down form of epsilon subunit fr... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 7xkq | |||||||||||||||
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| Title | F1 domain of FoF1-ATPase with the down form of epsilon subunit from Bacillus PS3 | |||||||||||||||
Components | (ATP synthase ...) x 4 | |||||||||||||||
Keywords | MOTOR PROTEIN / ATP synthase F1 ATPase FoF1 | |||||||||||||||
| Function / homology | Function and homology informationproton motive force-driven plasma membrane ATP synthesis / H+-transporting two-sector ATPase / proton-transporting ATP synthase complex / proton-transporting ATP synthase activity, rotational mechanism / ADP binding / ATP hydrolysis activity / ATP binding / plasma membrane Similarity search - Function | |||||||||||||||
| Biological species | ![]() | |||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||||||||
Authors | Nakano, A. / Kishikawa, J. / Nakanishi, A. / Mitsuoka, K. / Yokoyama, K. | |||||||||||||||
| Funding support | Japan, 4items
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Citation | Journal: PNAS Nexus / Year: 2022Title: Structural basis of unisite catalysis of bacterial FF-ATPase. Authors: Atsuki Nakano / Jun-Ichi Kishikawa / Atsuko Nakanishi / Kaoru Mitsuoka / Ken Yokoyama / ![]() Abstract: Adenosine triphosphate (ATP) synthases (FF-ATPases) are crucial for all aerobic organisms. F, a water-soluble domain, can catalyze both the synthesis and hydrolysis of ATP with the rotation of the ...Adenosine triphosphate (ATP) synthases (FF-ATPases) are crucial for all aerobic organisms. F, a water-soluble domain, can catalyze both the synthesis and hydrolysis of ATP with the rotation of the central rotor inside a cylinder made of in three different conformations (referred to as , , and ). In this study, we determined multiple cryo-electron microscopy structures of bacterial FF exposed to different reaction conditions. The structures of nucleotide-depleted FF indicate that the ε subunit directly forces to adopt a closed form independent of the nucleotide binding to . The structure of FF under conditions that permit only a single catalytic subunit per enzyme to bind ATP is referred to as unisite catalysis and reveals that ATP hydrolysis unexpectedly occurs on instead of , where ATP hydrolysis proceeds in the steady-state catalysis of FF. This indicates that the unisite catalysis of bacterial FF significantly differs from the kinetics of steady-state turnover with continuous rotation of the shaft. | |||||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 7xkq.cif.gz | 549.7 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7xkq.ent.gz | 454.7 KB | Display | PDB format |
| PDBx/mmJSON format | 7xkq.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 7xkq_validation.pdf.gz | 1.9 MB | Display | wwPDB validaton report |
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| Full document | 7xkq_full_validation.pdf.gz | 1.9 MB | Display | |
| Data in XML | 7xkq_validation.xml.gz | 96.3 KB | Display | |
| Data in CIF | 7xkq_validation.cif.gz | 144.8 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/xk/7xkq ftp://data.pdbj.org/pub/pdb/validation_reports/xk/7xkq | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 33264MC ![]() 7xkhC ![]() 7xkoC ![]() 7xkpC ![]() 7xkrC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-ATP synthase ... , 4 types, 8 molecules ABCDEFGH
| #1: Protein | Mass: 54848.598 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: A0A0M3VGF9, H+-transporting two-sector ATPase #2: Protein | Mass: 53424.625 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: A0A0M4U1P9, H+-transporting two-sector ATPase #3: Protein | | Mass: 31859.523 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #4: Protein | | Mass: 14585.905 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Non-polymers , 3 types, 13 molecules 




| #5: Chemical | ChemComp-ATP / #6: Chemical | ChemComp-MG / #7: Chemical | ChemComp-ADP / | |
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-Details
| Has ligand of interest | Y |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: FoF1 from Bacillus sp. PS3 / Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT |
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| Molecular weight | Value: 0.53 MDa / Experimental value: NO |
| Source (natural) | Organism: ![]() |
| Source (recombinant) | Organism: ![]() |
| Buffer solution | pH: 8 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 0.0291 mm |
| Specimen holder | Cryogen: NITROGEN |
| Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 9625 |
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Processing
| Software | Name: UCSF ChimeraX / Version: 1.3/v9 / Classification: model building / URL: https://www.rbvi.ucsf.edu/chimerax/ / Os: Windows / Type: package | ||||||||||||||||||||||||||||||||||||
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| EM software |
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 1020321 | ||||||||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 39991 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||||||||||||||||||||
| Atomic model building | PDB-ID: 6N2Y Accession code: 6N2Y / Source name: PDB / Type: experimental model |
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Japan, 4items
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gel filtration

