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Visualization of a polytopic membrane protein during SecY-mediated membrane insertion

Electron Microscopy
8Å resolution
PDB entry 5abb coloured by chain, front view.
PDB entry 5abb coloured by chain, side view.
PDB entry 5abb coloured by chain, top view.
Source organism: Escherichia coli
Assembly composition:
hetero trimer (preferred)
Entry contents: 3 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero trimer
PDBe Complex ID: PDB-CPX-110541

Macromolecules

Protein translocase subunit SecY
Chain: A
Length: 443 amino acids
Theoretical weight: 48.55 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: P0AGA2 (Residues: 1-443; Coverage: 100%)
Gene names: JW3262, b3300, prlA, secY
Pfam: SecY
InterPro:
Protein translocase subunit SecY in PDB entry 5abb, assembly 1, front view.
Protein translocase subunit SecY in PDB entry 5abb, assembly 1, side view.
Protein translocase subunit SecY in PDB entry 5abb, assembly 1, top view.
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Protein translocase subunit SecE
Chain: B
Length: 116 amino acids
Theoretical weight: 12.62 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: B7MIW7 (Residues: 12-127; Coverage: 91%)
Gene names: ECS88_4442, secE
Pfam: SecE/Sec61-gamma subunits of protein translocation complex
InterPro:
Protein translocase subunit SecE in PDB entry 5abb, assembly 1, front view.
Protein translocase subunit SecE in PDB entry 5abb, assembly 1, side view.
Protein translocase subunit SecE in PDB entry 5abb, assembly 1, top view.
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Green-light absorbing proteorhodopsin
Chain: Z
Length: 69 amino acids
Theoretical weight: 7.63 KDa
Source organism: Escherichia coli
UniProt:
  • Canonical: Q9F7P4 (Residues: 19-83; Coverage: 28%)
InterPro: Archaeal/bacterial/fungal rhodopsins
Green-light absorbing proteorhodopsin in PDB entry 5abb, assembly 1, front view.
Green-light absorbing proteorhodopsin in PDB entry 5abb, assembly 1, side view.
Green-light absorbing proteorhodopsin in PDB entry 5abb, assembly 1, top view.
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