+Open data
-Basic information
Entry | Database: PDB / ID: 7njy | |||||||||
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Title | Mycobacterium smegmatis ATP synthase Fo combined class 5 | |||||||||
Components |
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Keywords | HYDROLASE / complex / synthase | |||||||||
Function / homology | Function and homology information proton-transporting ATP synthase complex, coupling factor F(o) / proton-transporting ATP synthase activity, rotational mechanism / hydrolase activity / lipid binding / plasma membrane Similarity search - Function | |||||||||
Biological species | Mycolicibacterium smegmatis (bacteria) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.94 Å | |||||||||
Authors | Montgomery, M.G. / Petri, J. / Spikes, T.E. / Walker, J.E. | |||||||||
Funding support | United Kingdom, 2items
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Citation | Journal: Proc Natl Acad Sci U S A / Year: 2021 Title: Structure of the ATP synthase from provides targets for treating tuberculosis. Authors: Martin G Montgomery / Jessica Petri / Tobias E Spikes / John E Walker / Abstract: The structure has been determined by electron cryomicroscopy of the adenosine triphosphate (ATP) synthase from This analysis confirms features in a prior description of the structure of the enzyme, ...The structure has been determined by electron cryomicroscopy of the adenosine triphosphate (ATP) synthase from This analysis confirms features in a prior description of the structure of the enzyme, but it also describes other highly significant attributes not recognized before that are crucial for understanding the mechanism and regulation of the mycobacterial enzyme. First, we resolved not only the three main states in the catalytic cycle described before but also eight substates that portray structural and mechanistic changes occurring during a 360° catalytic cycle. Second, a mechanism of auto-inhibition of ATP hydrolysis involves not only the engagement of the C-terminal region of an α-subunit in a loop in the γ-subunit, as proposed before, but also a "fail-safe" mechanism involving the b'-subunit in the peripheral stalk that enhances engagement. A third unreported characteristic is that the fused bδ-subunit contains a duplicated domain in its N-terminal region where the two copies of the domain participate in similar modes of attachment of the two of three N-terminal regions of the α-subunits. The auto-inhibitory plus the associated "fail-safe" mechanisms and the modes of attachment of the α-subunits provide targets for development of innovative antitubercular drugs. The structure also provides support for an observation made in the bovine ATP synthase that the transmembrane proton-motive force that provides the energy to drive the rotary mechanism is delivered directly and tangentially to the rotor via a Grotthuss water chain in a polar L-shaped tunnel. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 7njy.cif.gz | 349.9 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7njy.ent.gz | 286.6 KB | Display | PDB format |
PDBx/mmJSON format | 7njy.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7njy_validation.pdf.gz | 729.8 KB | Display | wwPDB validaton report |
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Full document | 7njy_full_validation.pdf.gz | 733.1 KB | Display | |
Data in XML | 7njy_validation.xml.gz | 39.7 KB | Display | |
Data in CIF | 7njy_validation.cif.gz | 62 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/nj/7njy ftp://data.pdbj.org/pub/pdb/validation_reports/nj/7njy | HTTPS FTP |
-Related structure data
Related structure data | 12427MC 7njkC 7njlC 7njmC 7njnC 7njoC 7njpC 7njqC 7njrC 7njsC 7njtC 7njuC 7njvC 7njwC 7njxC 7nk7C 7nk9C 7nkbC 7nkdC 7nkhC 7nkjC 7nkkC 7nklC 7nknC 7nkpC 7nkqC 7nl9C C: citing same article (ref.) M: map data used to model this data |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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-Components
#1: Protein | Mass: 8597.982 Da / Num. of mol.: 9 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155) (bacteria) Strain: ATCC 700084 / mc(2)155 / Gene: atpE, MSMEG_4941 / Production host: Mycolicibacterium smegmatis (bacteria) / Strain (production host): mc2 4517 / References: UniProt: A0R205 #2: Protein | | Mass: 27568.482 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155) (bacteria) Strain: ATCC 700084 / mc(2)155 / Gene: atpB, MSMEG_4942 / Production host: Mycolicibacterium smegmatis (bacteria) / Strain (production host): mc2 4517 / References: UniProt: A0R206 #3: Protein | | Mass: 19018.170 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155) (bacteria) Strain: ATCC 700084 / mc(2)155 / Gene: atpF, MSMEG_4940, MSMEI_4813 / Production host: Mycolicibacterium smegmatis (bacteria) / Strain (production host): mc2 4517 / References: UniProt: A0R204 #4: Protein | | Mass: 47504.723 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155) (bacteria) Strain: ATCC 700084 / mc(2)155 / Gene: atpFH, atpF, atpH, MSMEG_4939, MSMEI_4812 / Production host: Mycolicibacterium smegmatis (bacteria) / Strain (production host): mc2 4517 / References: UniProt: A0R203 |
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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 |
-Sample preparation
Component | Name: Mycobacterium smegmatis ATP synthase / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Value: 0.547 MDa / Experimental value: YES |
Source (natural) | Organism: Mycolicibacterium smegmatis MC2 155 (bacteria) |
Source (recombinant) | Organism: Mycolicibacterium smegmatis (bacteria) / Strain: mc2 4517 |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-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 |
Image recording | Electron dose: 59.86 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 2.94 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 45992 / Symmetry type: POINT |