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BamABCDE bound to substrate EspP

Electron Microscopy
3.6Å resolution
PDB entry 7ttc coloured by chain, front view.
PDB entry 7ttc coloured by chain, side view.
PDB entry 7ttc coloured by chain, top view.
Source organism: Escherichia coli
Assembly composition:
hetero hexamer (preferred)
Entry contents: 6 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero hexamer
Accessible surface area: 64345.97 Å2
Buried surface area: 11169.67 Å2
Dissociation area: 1,340.06 Å2
Dissociation energy (ΔGdiss): -10.57 kcal/mol
Dissociation entropy (TΔSdiss): 24.06 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-128464

Macromolecules

Outer membrane protein assembly factor BamB
Chain: B
Length: 373 amino acids
Theoretical weight: 39.88 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P77774 (Residues: 20-392; Coverage: 100%)
Gene names: JW2496, b2512, bamB, yfgL
Pfam:
InterPro:
Outer membrane protein assembly factor BamB in PDB entry 7ttc, assembly 1, front view.
Outer membrane protein assembly factor BamB in PDB entry 7ttc, assembly 1, side view.
Outer membrane protein assembly factor BamB in PDB entry 7ttc, assembly 1, top view.
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Outer membrane protein assembly factor BamA
Chain: A
Length: 800 amino acids
Theoretical weight: 89.75 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P0A940 (Residues: 22-810; Coverage: 100%)
Gene names: JW0172, b0177, bamA, yaeT, yzzN, yzzY
Pfam:
InterPro:
Outer membrane protein assembly factor BamA in PDB entry 7ttc, assembly 1, front view.
Outer membrane protein assembly factor BamA in PDB entry 7ttc, assembly 1, side view.
Outer membrane protein assembly factor BamA in PDB entry 7ttc, assembly 1, top view.
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Outer membrane protein assembly factor BamE
Chain: E
Length: 94 amino acids
Theoretical weight: 10.39 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P0A937 (Residues: 20-113; Coverage: 100%)
Gene names: JW2598, b2617, bamE, smpA
Pfam: SmpA / OmlA family
InterPro:
Outer membrane protein assembly factor BamE in PDB entry 7ttc, assembly 1, front view.
Outer membrane protein assembly factor BamE in PDB entry 7ttc, assembly 1, side view.
Outer membrane protein assembly factor BamE in PDB entry 7ttc, assembly 1, top view.
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Outer membrane protein assembly factor BamD
Chain: D
Length: 226 amino acids
Theoretical weight: 25.82 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P0AC02 (Residues: 20-245; Coverage: 100%)
Gene names: JW2577, b2595, bamD, yfiO
Pfam: Outer membrane lipoprotein
InterPro:
Outer membrane protein assembly factor BamD in PDB entry 7ttc, assembly 1, front view.
Outer membrane protein assembly factor BamD in PDB entry 7ttc, assembly 1, side view.
Outer membrane protein assembly factor BamD in PDB entry 7ttc, assembly 1, top view.
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Outer membrane protein assembly factor BamC
Chain: C
Length: 320 amino acids
Theoretical weight: 34.4 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P0A903 (Residues: 25-344; Coverage: 100%)
Gene names: JW2462, b2477, bamC, dapX, nlpB
Pfam: NlpB/DapX lipoprotein
InterPro:
Outer membrane protein assembly factor BamC in PDB entry 7ttc, assembly 1, front view.
Outer membrane protein assembly factor BamC in PDB entry 7ttc, assembly 1, side view.
Outer membrane protein assembly factor BamC in PDB entry 7ttc, assembly 1, top view.
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Autotransporter protein EspP translocator
Chain: P
Length: 277 amino acids
Theoretical weight: 30.38 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: O32591 (Residues: 1024-1298; Coverage: 22%)
Gene names: espP, pssA
Pfam: Autotransporter beta-domain
InterPro:
Autotransporter protein EspP translocator in PDB entry 7ttc, assembly 1, front view.
Autotransporter protein EspP translocator in PDB entry 7ttc, assembly 1, side view.
Autotransporter protein EspP translocator in PDB entry 7ttc, assembly 1, top view.
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