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Crystal Structure Analysis of mutant rhodobacter sphaeroides bc1 with stigmatellin and antimycin

X-ray diffraction
3.1Å resolution
PDB entry 2qjk coloured by chain, front view.
PDB entry 2qjk coloured by chain, side view.
PDB entry 2qjk coloured by chain, top view.
Source organism: Cereibacter sphaeroides
Assembly composition:
hetero hexamer (preferred)
Entry contents: 3 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero hexamer
Accessible surface area: 69640.56 Å2
Buried surface area: 36270.6 Å2
Dissociation area: 3,331.56 Å2
Dissociation energy (ΔGdiss): 57.03 kcal/mol
Dissociation entropy (TΔSdiss): 16.69 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-169747
Assembly 2
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Multimeric state: hetero hexamer
Accessible surface area: 69801.21 Å2
Buried surface area: 36183.12 Å2
Dissociation area: 3,320.71 Å2
Dissociation energy (ΔGdiss): 58.16 kcal/mol
Dissociation entropy (TΔSdiss): 16.68 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-169747
Assembly 3
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Multimeric state: hetero hexamer
Accessible surface area: 69631.82 Å2
Buried surface area: 36345.68 Å2
Dissociation area: 3,343.14 Å2
Dissociation energy (ΔGdiss): 58.13 kcal/mol
Dissociation entropy (TΔSdiss): 16.69 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-169747

Macromolecules

Cytochrome b
Chains: A, D, G, J, M, P
Length: 428 amino acids
Theoretical weight: 48.44 KDa
Source organism: Cereibacter sphaeroides
Expression system: Escherichia coli
UniProt:
  • Canonical: Q02761 (Residues: 3-430; Coverage: 96%)
Gene names: fbcB, petB
Pfam:
InterPro:
CATH: Cytochrome Bc1 Complex; Chain C
Cytochrome b in PDB entry 2qjk, assembly 1, front view.
Cytochrome b in PDB entry 2qjk, assembly 1, side view.
Cytochrome b in PDB entry 2qjk, assembly 1, top view.
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Cytochrome c1
Chains: B, E, H, K, N, Q
Length: 256 amino acids
Theoretical weight: 27.79 KDa
Source organism: Cereibacter sphaeroides
Expression system: Escherichia coli
UniProt:
  • Canonical: Q02760 (Residues: 23-278; Coverage: 97%)
Gene names: fbcC, petC
Pfam: Cytochrome C1 family
InterPro:
CATH:
Cytochrome c1 in PDB entry 2qjk, assembly 1, front view.
Cytochrome c1 in PDB entry 2qjk, assembly 1, side view.
Cytochrome c1 in PDB entry 2qjk, assembly 1, top view.
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Ubiquinol-cytochrome c reductase iron-sulfur subunit
Chains: C, F, I, L, O, R
Length: 179 amino acids
Theoretical weight: 19.06 KDa
Source organism: Cereibacter sphaeroides
Expression system: Escherichia coli
UniProt:
  • Canonical: Q02762 (Residues: 9-187; Coverage: 96%)
Gene names: fbcF, petA
Pfam:
InterPro:
CATH:
Ubiquinol-cytochrome c reductase iron-sulfur subunit in PDB entry 2qjk, assembly 1, front view.
Ubiquinol-cytochrome c reductase iron-sulfur subunit in PDB entry 2qjk, assembly 1, side view.
Ubiquinol-cytochrome c reductase iron-sulfur subunit in PDB entry 2qjk, assembly 1, top view.
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