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- PDB-8ab6: Complex III2 from Yarrowia lipolytica, combined datasets, consens... -
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Basic information
Entry | Database: PDB / ID: 8ab6 | ||||||
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Title | Complex III2 from Yarrowia lipolytica, combined datasets, consensus refinement | ||||||
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![]() | MEMBRANE PROTEIN / oxidoreductase / electron transport chain | ||||||
Function / homology | ![]() mitochondrial processing peptidase complex / mitochondrial processing peptidase / matrix side of mitochondrial inner membrane / protein processing involved in protein targeting to mitochondrion / mitochondrial respiratory chain complex III assembly / respiratory chain complex III / quinol-cytochrome-c reductase / ubiquinol-cytochrome-c reductase activity / mitochondrial electron transport, ubiquinol to cytochrome c / mitochondrial crista ...mitochondrial processing peptidase complex / mitochondrial processing peptidase / matrix side of mitochondrial inner membrane / protein processing involved in protein targeting to mitochondrion / mitochondrial respiratory chain complex III assembly / respiratory chain complex III / quinol-cytochrome-c reductase / ubiquinol-cytochrome-c reductase activity / mitochondrial electron transport, ubiquinol to cytochrome c / mitochondrial crista / nuclear periphery / mitochondrial intermembrane space / metalloendopeptidase activity / 2 iron, 2 sulfur cluster binding / mitochondrial inner membrane / oxidoreductase activity / heme binding / mitochondrion / proteolysis / membrane / metal ion binding Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2 Å | ||||||
![]() | Wieferig, J.P. / Kuhlbrandt, W. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Analysis of the conformational heterogeneity of the Rieske iron-sulfur protein in complex III by cryo-EM. Authors: Jan Philip Wieferig / Werner Kühlbrandt / ![]() Abstract: Movement of the Rieske domain of the iron-sulfur protein is essential for intramolecular electron transfer within complex III (CIII) of the respiratory chain as it bridges a gap in the cofactor chain ...Movement of the Rieske domain of the iron-sulfur protein is essential for intramolecular electron transfer within complex III (CIII) of the respiratory chain as it bridges a gap in the cofactor chain towards the electron acceptor cytochrome c. We present cryo-EM structures of CIII from Yarrowia lipolytica at resolutions up to 2.0 Å under different conditions, with different redox states of the cofactors of the high-potential chain. All possible permutations of three primary positions were observed, indicating that the two halves of the dimeric complex act independently. Addition of the substrate analogue decylubiquinone to CIII with a reduced high-potential chain increased the occupancy of the Q site. The extent of Rieske domain interactions through hydrogen bonds to the cytochrome b and cytochrome c subunits varied depending on the redox state and substrate. In the absence of quinols, the reduced Rieske domain interacted more closely with cytochrome b and cytochrome c than in the oxidized state. Upon addition of the inhibitor antimycin A, the heterogeneity of the cd-helix and ef-loop increased, which may be indicative of a long-range effect on the Rieske domain. | ||||||
History |
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-Validation report
Summary document | ![]() | 3 MB | Display | ![]() |
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Full document | ![]() | 3.1 MB | Display | |
Data in XML | ![]() | 122.8 KB | Display | |
Data in CIF | ![]() | 186.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 15312MC ![]() 8ab7C ![]() 8ab8C ![]() 8ab9C ![]() 8abaC ![]() 8abbC ![]() 8abeC ![]() 8abfC ![]() 8abgC ![]() 8abhC ![]() 8abiC ![]() 8abjC ![]() 8abkC ![]() 8ablC ![]() 8abmC ![]() 8ac3C ![]() 8ac4C ![]() 8ac5C 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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Assembly
Deposited unit | ![]()
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Component-ID: 1 / Refine code: 1
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