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Yorodumi- PDB-8abj: Complex III2 from Yarrowia lipolytica, antimycin A bound, c-position -
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-Basic information
Entry | Database: PDB / ID: 8abj | ||||||
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Title | Complex III2 from Yarrowia lipolytica, antimycin A bound, c-position | ||||||
Components |
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Keywords | MEMBRANE PROTEIN / oxidoreductase / electron transport chain / inhibitor | ||||||
Function / homology | Function and homology information 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 / : / 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 / : / quinol-cytochrome-c reductase / ubiquinol-cytochrome-c reductase activity / mitochondrial electron transport, ubiquinol to cytochrome c / mitochondrial crista / nuclear periphery / metalloendopeptidase activity / mitochondrial intermembrane space / 2 iron, 2 sulfur cluster binding / oxidoreductase activity / heme binding / mitochondrion / proteolysis / membrane / metal ion binding Similarity search - Function | ||||||
Biological species | Yarrowia lipolytica (yeast) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | ||||||
Authors | Wieferig, J.P. / Kuhlbrandt, W. | ||||||
Funding support | Germany, 1items
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Citation | Journal: IUCrJ / Year: 2023 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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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
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PDBx/mmCIF format | 8abj.cif.gz | 846 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8abj.ent.gz | 671.7 KB | Display | PDB format |
PDBx/mmJSON format | 8abj.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8abj_validation.pdf.gz | 3.3 MB | Display | wwPDB validaton report |
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Full document | 8abj_full_validation.pdf.gz | 3.4 MB | Display | |
Data in XML | 8abj_validation.xml.gz | 134.3 KB | Display | |
Data in CIF | 8abj_validation.cif.gz | 191 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ab/8abj ftp://data.pdbj.org/pub/pdb/validation_reports/ab/8abj | HTTPS FTP |
-Related structure data
Related structure data | 15323MC 8ab6C 8ab7C 8ab8C 8ab9C 8abaC 8abbC 8abeC 8abfC 8abgC 8abhC 8abiC 8abkC 8ablC 8abmC 8ac3C 8ac4C 8ac5C M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
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-Assembly
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Component-ID: _ / Refine code: _
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