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Cryo-EM structure of heme A synthase trimer from Aquifex aeolicus

Electron Microscopy
2.8Å resolution
PDB entry 8aw5 coloured by chain, front view.
PDB entry 8aw5 coloured by chain, side view.
PDB entry 8aw5 coloured by chain, top view.
Source organism: Aquifex aeolicus VF5
Assembly composition:
homo trimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Heme O oxygenase
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Multimeric state: homo trimer
Accessible surface area: 35853.17 Å2
Buried surface area: 12430.48 Å2
Dissociation area: 4,355.49 Å2
Dissociation energy (ΔGdiss): 49.4 kcal/mol
Dissociation entropy (TΔSdiss): 28.22 kcal/mol
Symmetry number: 3
PDBe Complex ID: PDB-CPX-228078

Macromolecules

Heme O oxygenase
Chains: A, B, C
Length: 310 amino acids
Theoretical weight: 34.98 KDa
Source organism: Aquifex aeolicus VF5
Expression system: Escherichia coli
UniProt:
  • Canonical: O66543 (Residues: 1-296; Coverage: 100%)
Gene names: aq_153, ctaA
Pfam: Cytochrome oxidase assembly protein
Heme O oxygenase in PDB entry 8aw5, assembly 1, front view.
Heme O oxygenase in PDB entry 8aw5, assembly 1, side view.
Heme O oxygenase in PDB entry 8aw5, assembly 1, top view.
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