7e1w

Electron Microscopy
2.67Å resolution

Cryo-EM structure of hybrid respiratory supercomplex consisting of Mycobacterium tuberculosis complexIII and Mycobacterium smegmatis complexIV in the presence of Q203

Released:

Function and Biology Details

Reactions catalysed:
4 ferrocytochrome c + O(2) + 8 H(+)(Side 1) = 4 ferricytochrome c + 4 H(2)O(Side 2)
Quinol + 2 ferricytochrome c(Side 2) = quinone + 2 ferrocytochrome c(Side 2) + 2 H(+)(Side 2)
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero icosamer (preferred)
PDBe Complex ID:
PDB-CPX-106394 (preferred)
Entry contents:
10 distinct polypeptide molecules
Macromolecules (10 distinct):
cytochrome-c oxidase Chains: E, Q
Molecule details ›
Chains: E, Q
Length: 341 amino acids
Theoretical weight: 38.08 KDa
Source organism: Mycolicibacterium smegmatis MC2 51
UniProt:
  • Canonical: A0R057 (Residues: 1-341; Coverage: 100%)
Gene name: MSMEG_4268
Sequence domains: Cytochrome C oxidase subunit II, periplasmic domain
Cytochrome c oxidase subunit 1 Chains: F, R
Molecule details ›
Chains: F, R
Length: 575 amino acids
Theoretical weight: 64.16 KDa
Source organism: Mycolicibacterium smegmatis MC2 51
Probable cytochrome c oxidase subunit 3 Chains: G, S
Molecule details ›
Chains: G, S
Length: 203 amino acids
Theoretical weight: 22.2 KDa
Source organism: Mycolicibacterium smegmatis MC2 51
UniProt:
  • Canonical: A0R049 (Residues: 1-203; Coverage: 100%)
Gene name: MSMEG_4260
Sequence domains: Cytochrome c oxidase subunit III
Cytochrome c oxidase polypeptide 4 Chains: H, T
Molecule details ›
Chains: H, T
Length: 139 amino acids
Theoretical weight: 15.18 KDa
Source organism: Mycolicibacterium smegmatis MC2 51
UniProt:
  • Canonical: A0R056 (Residues: 1-139; Coverage: 100%)
Gene name: MSMEG_4267
Sequence domains: Cytochrome c oxidase subunit IV
Cytochrome c oxidase subunit CtaJ Chains: I, U
Molecule details ›
Chains: I, U
Length: 79 amino acids
Theoretical weight: 8.37 KDa
Source organism: Mycolicibacterium smegmatis MC2 51
UniProt:
  • Canonical: A0R1B6 (Residues: 1-79; Coverage: 100%)
Gene name: MSMEG_4693
Uncharacterized protein MSMEG_4692/MSMEI_4575 Chains: J, V
Molecule details ›
Chains: J, V
Length: 157 amino acids
Theoretical weight: 15.91 KDa
Source organism: Mycolicibacterium smegmatis MC2 51
UniProt:
  • Canonical: A0R1B5 (Residues: 1-157; Coverage: 100%)
Gene names: MSMEG_4692, MSMEI_4575
Sequence domains: Domain of unknown function (DUF5130)
Prokaryotic respiratory supercomplex associate factor 1 PRSAF1 Chains: D, P
Molecule details ›
Chains: D, P
Length: 100 amino acids
Theoretical weight: 11.33 KDa
Source organism: Mycolicibacterium smegmatis MC2 51
Cytochrome bc1 complex cytochrome b subunit Chains: B, N
Molecule details ›
Chains: B, N
Length: 549 amino acids
Theoretical weight: 61.08 KDa
Source organism: Mycobacterium tuberculosis H37Rv
Expression system: Mycolicibacterium smegmatis MC2 51
UniProt:
  • Canonical: P9WP37 (Residues: 1-549; Coverage: 100%)
Gene names: MTCY190.07, Rv2196, qcrB
Sequence domains: Cytochrome b(N-terminal)/b6/petB
Cytochrome bc1 complex Rieske iron-sulfur subunit Chains: A, M
Molecule details ›
Chains: A, M
Length: 429 amino acids
Theoretical weight: 46.98 KDa
Source organism: Mycobacterium tuberculosis H37Rv
Expression system: Mycolicibacterium smegmatis MC2 51
UniProt:
  • Canonical: P9WH23 (Residues: 1-429; Coverage: 100%)
Gene names: MTCY190.06, Rv2195, qcrA
Sequence domains:
Cytochrome bc1 complex cytochrome c subunit Chains: C, O
Molecule details ›
Chains: C, O
Length: 280 amino acids
Theoretical weight: 29.15 KDa
Source organism: Mycobacterium tuberculosis H37Rv
Expression system: Mycolicibacterium smegmatis MC2 51
UniProt:
  • Canonical: P9WP35 (Residues: 2-280; Coverage: 100%)
Gene names: MTCY190.05, Rv2194, qcrC
Sequence domains:

Ligands and Environments

Experiments and Validation Details

Entry percentile scores
Resolution: 2.67Å
Relevant EMDB volumes: EMD-30944
Expression system: Mycolicibacterium smegmatis MC2 51