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- EMDB-44061: Artemia franciscana ATP synthase state 2 (composite structure), pH 7.0 -
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Open data
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Basic information
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Title | Artemia franciscana ATP synthase state 2 (composite structure), pH 7.0 | |||||||||
![]() | Artemia franciscana ATP synthase state 2 (composite structure), pH 7.0 | |||||||||
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![]() | ATP synthesis / Complex V / mitochondria / oxidative-phosphorylation / MEMBRANE PROTEIN | |||||||||
Function / homology | ![]() ATP biosynthetic process / : / proton-transporting ATP synthase activity, rotational mechanism / proton transmembrane transport / mitochondrial membrane / mitochondrial inner membrane Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.6 Å | |||||||||
![]() | Mnatsakanyan N / Mello JFR | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM structure of the brine shrimp mitochondrial ATP synthase suggests an inactivation mechanism for the ATP synthase leak channel. Authors: Amrendra Kumar / Juliana da Fonseca Rezende E Mello / Yangyu Wu / Daniel Morris / Ikram Mezghani / Erin Smith / Stephane Rombauts / Peter Bossier / Juno Krahn / Fred J Sigworth / Nelli Mnatsakanyan / ![]() ![]() Abstract: Mammalian mitochondria undergo Ca-induced and cyclosporinA (CsA)-regulated permeability transition (mPT) by activating the mitochondrial permeability transition pore (mPTP) situated in mitochondrial ...Mammalian mitochondria undergo Ca-induced and cyclosporinA (CsA)-regulated permeability transition (mPT) by activating the mitochondrial permeability transition pore (mPTP) situated in mitochondrial inner membranes. Ca-induced prolonged openings of mPTP under certain pathological conditions result in mitochondrial swelling and rupture of the outer membrane, leading to mitochondrial dysfunction and cell death. While the exact molecular composition and structure of mPTP remain unknown, mammalian ATP synthase was reported to form voltage and Ca-activated leak channels involved in mPT. Unlike in mammals, mitochondria of the crustacean Artemia franciscana have the ability to accumulate large amounts of Ca without undergoing the mPT. Here, we performed structural and functional analysis of A. franciscana ATP synthase to study the molecular mechanism of mPTP inhibition in this organism. We found that the channel formed by the A. franciscana ATP synthase dwells predominantly in its inactive state and is insensitive to Ca, in contrast to porcine heart ATP synthase. Single-particle cryo-electron microscopy (cryo-EM) analysis revealed distinct structural features in A. franciscana ATP synthase compared with mammals. The stronger density of the e-subunit C-terminal region and its enhanced interaction with the c-ring were found in A. franciscana ATP synthase. These data suggest an inactivation mechanism of the ATP synthase leak channel and its possible contribution to the lack of mPT in this organism. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 458.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 34.2 KB 34.2 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 16.8 KB | Display | ![]() |
Images | ![]() | 43.7 KB | ||
Filedesc metadata | ![]() | 8.6 KB | ||
Others | ![]() ![]() ![]() | 483.8 MB 475.2 MB 475.2 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 791.2 KB | Display | ![]() |
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Full document | ![]() | 790.7 KB | Display | |
Data in XML | ![]() | 26.8 KB | Display | |
Data in CIF | ![]() | 35.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9b0xMC ![]() 9b3jC ![]() 9bpgC C: citing same article ( M: atomic model generated by this map |
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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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Annotation | Artemia franciscana ATP synthase state 2 (composite structure), pH 7.0 | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.068 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: Artemia franciscana ATP synthase state 2, pH 7.0
File | emd_44061_additional_1.map | ||||||||||||
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Annotation | Artemia franciscana ATP synthase state 2, pH 7.0 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Artemia franciscana ATP synthase state 2, pH 7.0
File | emd_44061_half_map_1.map | ||||||||||||
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Annotation | Artemia franciscana ATP synthase state 2, pH 7.0 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Artemia franciscana ATP synthase state 2, pH 7.0
File | emd_44061_half_map_2.map | ||||||||||||
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Annotation | Artemia franciscana ATP synthase state 2, pH 7.0 | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
+Entire : Mitochondrial ATP synthase
+Supramolecule #1: Mitochondrial ATP synthase
+Macromolecule #1: ATP synthase subunit c
+Macromolecule #2: ATP synthase subunit alpha
+Macromolecule #3: ATP synthase subunit beta
+Macromolecule #4: ATP synthase subunit gamma
+Macromolecule #5: ATP synthase subunit delta
+Macromolecule #6: ATP synthase subunit epsilon
+Macromolecule #7: ATP synthase inhibitory factor 1, IF1
+Macromolecule #8: ATP synthase subunit b
+Macromolecule #9: ATP synthase coupling factor 6, F6
+Macromolecule #10: ATP synthase subunit d
+Macromolecule #11: ATP synthase subunit a
+Macromolecule #12: ATP synthase subunit OSCP
+Macromolecule #13: ATP synthase subunit 6.8PL
+Macromolecule #14: ATP synthase protein 8
+Macromolecule #15: ATP synthase subunit f
+Macromolecule #16: ATP synthase subunit g
+Macromolecule #17: ATP synthase subunit e
+Macromolecule #18: ADENOSINE-5'-TRIPHOSPHATE
+Macromolecule #19: MAGNESIUM ION
+Macromolecule #20: ADENOSINE-5'-DIPHOSPHATE
+Macromolecule #21: CARDIOLIPIN
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.5 mg/mL |
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Buffer | pH: 8 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 15.8 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.7 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 81000 |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Initial model | Chain - Source name: Other / Chain - Initial model type: integrative model / Details: Genome annotation and AlphaFold |
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Output model | ![]() PDB-9b0x: |