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Cryo-EM structure of Escherichia coli cytochrome bo3 in DDM detergent

Electron Microscopy
3.09Å resolution
PDB entry 8go3 coloured by chain, front view.
PDB entry 8go3 coloured by chain, side view.
PDB entry 8go3 coloured by chain, top view.
Source organism: Escherichia coli K-12
Assembly composition:
hetero tetramer (preferred)
Entry contents: 4 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Cytochrome bo3 ubiquinol oxidase complex
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Multimeric state: hetero tetramer
Accessible surface area: 40289.91 Å2
Buried surface area: 23157.58 Å2
Dissociation area: 2,991.95 Å2
Dissociation energy (ΔGdiss): 65.5 kcal/mol
Dissociation entropy (TΔSdiss): 13.14 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-532689
Complex Portal ID: CPX-2102

Macromolecules

Cytochrome bo(3) ubiquinol oxidase subunit 1
Chain: A
Length: 663 amino acids
Theoretical weight: 74.42 KDa
Source organism: Escherichia coli K-12
UniProt:
  • Canonical: P0ABI8 (Residues: 1-663; Coverage: 100%)
Gene names: JW0421, b0431, cyoB
Pfam: Cytochrome C and Quinol oxidase polypeptide I
Cytochrome bo(3) ubiquinol oxidase subunit 1 in PDB entry 8go3, assembly 1, front view.
Cytochrome bo(3) ubiquinol oxidase subunit 1 in PDB entry 8go3, assembly 1, side view.
Cytochrome bo(3) ubiquinol oxidase subunit 1 in PDB entry 8go3, assembly 1, top view.
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Cytochrome bo(3) ubiquinol oxidase subunit 2
Chain: B
Length: 315 amino acids
Theoretical weight: 34.95 KDa
Source organism: Escherichia coli K-12
UniProt:
  • Canonical: P0ABJ1 (Residues: 1-315; Coverage: 100%)
Gene names: JW0422, b0432, cyoA
Pfam:
Cytochrome bo(3) ubiquinol oxidase subunit 2 in PDB entry 8go3, assembly 1, front view.
Cytochrome bo(3) ubiquinol oxidase subunit 2 in PDB entry 8go3, assembly 1, side view.
Cytochrome bo(3) ubiquinol oxidase subunit 2 in PDB entry 8go3, assembly 1, top view.
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Cytochrome bo(3) ubiquinol oxidase subunit 3
Chain: C
Length: 204 amino acids
Theoretical weight: 22.64 KDa
Source organism: Escherichia coli K-12
UniProt:
  • Canonical: P0ABJ3 (Residues: 1-204; Coverage: 100%)
Gene names: JW0420, b0430, cyoC
Pfam: Cytochrome c oxidase subunit III
ubiquinol oxidase in PDB entry 8go3, assembly 1, front view.
ubiquinol oxidase in PDB entry 8go3, assembly 1, side view.
ubiquinol oxidase in PDB entry 8go3, assembly 1, top view.
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Cytochrome bo(3) ubiquinol oxidase subunit 4
Chain: D
Length: 109 amino acids
Theoretical weight: 12.04 KDa
Source organism: Escherichia coli K-12
UniProt:
  • Canonical: P0ABJ6 (Residues: 1-109; Coverage: 100%)
Gene names: JW0419, b0429, cyoD
Pfam: Prokaryotic Cytochrome C oxidase subunit IV
Cytochrome bo(3) ubiquinol oxidase subunit 4 in PDB entry 8go3, assembly 1, front view.
Cytochrome bo(3) ubiquinol oxidase subunit 4 in PDB entry 8go3, assembly 1, side view.
Cytochrome bo(3) ubiquinol oxidase subunit 4 in PDB entry 8go3, assembly 1, top view.
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