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CryoEM structure of Methylococcus capsulatus (Bath) pMMO treated with potassium cyanide in a native lipid nanodisc at 3.65 Angstrom resolution

Electron Microscopy
3.65Å resolution
PDB entry 7t4o coloured by chain, front view.
PDB entry 7t4o coloured by chain, side view.
PDB entry 7t4o coloured by chain, top view.
Source organism: Methylococcus capsulatus str. Bath
Assembly composition:
hetero nonamer (preferred)
Entry contents: 3 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero nonamer
Accessible surface area: 78780.14 Å2
Buried surface area: 69934.02 Å2
Dissociation area: 9,025.88 Å2
Dissociation energy (ΔGdiss): 21.25 kcal/mol
Dissociation entropy (TΔSdiss): 34.12 kcal/mol
Symmetry number: 3
PDBe Complex ID: PDB-CPX-124232

Macromolecules

Particulate methane monooxygenase alpha subunit
Chains: A, E, I
Length: 414 amino acids
Theoretical weight: 46.13 KDa
Source organism: Methylococcus capsulatus str. Bath
UniProt:
  • Canonical: G1UBD1 (Residues: 1-414; Coverage: 100%)
Gene names: MCA1796, MCA2853, pmoB, pmoB1, pmoB2
Pfam: Monooxygenase subunit B protein
InterPro:
Particulate methane monooxygenase alpha subunit in PDB entry 7t4o, assembly 1, front view.
Particulate methane monooxygenase alpha subunit in PDB entry 7t4o, assembly 1, side view.
Particulate methane monooxygenase alpha subunit in PDB entry 7t4o, assembly 1, top view.
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Ammonia monooxygenase/methane monooxygenase, subunit C family protein
Chains: C, G, K
Length: 260 amino acids
Theoretical weight: 29.84 KDa
Source organism: Methylococcus capsulatus str. Bath
UniProt:
  • Canonical: Q603F1 (Residues: 1-260; Coverage: 100%)
Gene names: MCA1798, MCA2855, pmoC1
Pfam: Ammonia monooxygenase/methane monooxygenase, subunit C
InterPro:
Methane monooxygenase, C subunit in PDB entry 7t4o, assembly 1, front view.
Methane monooxygenase, C subunit in PDB entry 7t4o, assembly 1, side view.
Methane monooxygenase, C subunit in PDB entry 7t4o, assembly 1, top view.
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Particulate methane monooxygenase beta subunit
Chains: B, F, J
Length: 247 amino acids
Theoretical weight: 28.45 KDa
Source organism: Methylococcus capsulatus str. Bath
UniProt:
  • Canonical: Q607G3 (Residues: 1-247; Coverage: 100%)
Gene names: MCA1797, MCA2854, pmoA, pmoA1, pmoA2
Pfam: Ammonia monooxygenase
InterPro:
Particulate methane monooxygenase beta subunit in PDB entry 7t4o, assembly 1, front view.
Particulate methane monooxygenase beta subunit in PDB entry 7t4o, assembly 1, side view.
Particulate methane monooxygenase beta subunit in PDB entry 7t4o, assembly 1, top view.
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