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- PDB-8ap8: Peripheral stalk of Trypanosoma brucei mitochondrial ATP synthase -
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Basic information
Entry | Database: PDB / ID: 8ap8 | ||||||
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Title | Peripheral stalk of Trypanosoma brucei mitochondrial ATP synthase | ||||||
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![]() | MEMBRANE PROTEIN / ATP synthase / mitochondria | ||||||
Function / homology | ![]() kinetoplast / : / : / photosynthetic electron transport in photosystem I / proton motive force-driven mitochondrial ATP synthesis / chloroplast thylakoid membrane / proton-transporting ATP synthase complex, catalytic core F(1) / photosynthetic electron transport in photosystem II / proton-transporting ATP synthase activity, rotational mechanism / mitochondrial membrane ...kinetoplast / : / : / photosynthetic electron transport in photosystem I / proton motive force-driven mitochondrial ATP synthesis / chloroplast thylakoid membrane / proton-transporting ATP synthase complex, catalytic core F(1) / photosynthetic electron transport in photosystem II / proton-transporting ATP synthase activity, rotational mechanism / mitochondrial membrane / mitochondrion / nucleoplasm / plasma membrane / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||
![]() | Muehleip, A. / Gahura, O. / Zikova, A. / Amunts, A. | ||||||
Funding support | European Union, 1items
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![]() | ![]() Title: An ancestral interaction module promotes oligomerization in divergent mitochondrial ATP synthases. Authors: Ondřej Gahura / Alexander Mühleip / Carolina Hierro-Yap / Brian Panicucci / Minal Jain / David Hollaus / Martina Slapničková / Alena Zíková / Alexey Amunts / ![]() ![]() Abstract: Mitochondrial ATP synthase forms stable dimers arranged into oligomeric assemblies that generate the inner-membrane curvature essential for efficient energy conversion. Here, we report cryo-EM ...Mitochondrial ATP synthase forms stable dimers arranged into oligomeric assemblies that generate the inner-membrane curvature essential for efficient energy conversion. Here, we report cryo-EM structures of the intact ATP synthase dimer from Trypanosoma brucei in ten different rotational states. The model consists of 25 subunits, including nine lineage-specific, as well as 36 lipids. The rotary mechanism is influenced by the divergent peripheral stalk, conferring a greater conformational flexibility. Proton transfer in the lumenal half-channel occurs via a chain of five ordered water molecules. The dimerization interface is formed by subunit-g that is critical for interactions but not for the catalytic activity. Although overall dimer architecture varies among eukaryotes, we find that subunit-g together with subunit-e form an ancestral oligomerization motif, which is shared between the trypanosomal and mammalian lineages. Therefore, our data defines the subunit-g/e module as a structural component determining ATP synthase oligomeric assemblies. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 265.2 KB | Display | ![]() |
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PDB format | ![]() | 211.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1 MB | Display | ![]() |
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Full document | ![]() | 1 MB | Display | |
Data in XML | ![]() | 45.2 KB | Display | |
Data in CIF | ![]() | 65.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 15561MC ![]() 8ap6C ![]() 8ap7C ![]() 8ap9C ![]() 8apaC ![]() 8apbC ![]() 8apcC ![]() 8apdC ![]() 8apeC ![]() 8apfC ![]() 8apgC ![]() 8aphC ![]() 8apjC ![]() 8apkC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
#1: Protein | Mass: 28869.924 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#2: Protein | Mass: 17218.723 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#3: Protein | Mass: 27646.643 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#4: Protein | Mass: 13750.958 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#5: Protein | Mass: 43379.324 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-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: mitochondrial ATP synthase dimer from Trypanosoma brucei Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: all / Source: NATURAL |
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Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 |
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: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3200 nm / Nominal defocus min: 1600 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 70 K / Temperature (min): 70 K |
Image recording | Electron dose: 33 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 QUANTUM (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.19_4092: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 201210 / Symmetry type: POINT | ||||||||||||||||||||||||
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