Structure of the C-terminal domain of BamC

Experimental Data Snapshot

  • Resolution: 1.25 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.148 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Structural Basis of Outer Membrane Protein Biogenesis in Bacteria.

Albrecht, R.Zeth, K.

(2011) J Biol Chem 286: 27792

  • DOI: https://doi.org/10.1074/jbc.M111.238931
  • Primary Citation of Related Structures:  
    2YH3, 2YH5, 2YH6, 2YH9, 2YHC

  • PubMed Abstract: 

    In Escherichia coli, a multicomponent BAM (β-barrel assembly machinery) complex is responsible for recognition and assembly of outer membrane β-barrel proteins. The functionality of BAM in protein biogenesis is mainly orchestrated through the presence of two essential components, BamA and BamD. Here, we present crystal structures of four lipoproteins (BamB-E). Monomeric BamB and BamD proteins display scaffold architectures typically implied in transient protein interactions. BamB is a β-propeller protein comprising eight WD40 repeats. BamD shows an elongated fold on the basis of five tetratricopeptide repeats, three of which form the scaffold for protein recognition. The rod-shaped BamC protein has evolved through the gene duplication of two conserved domains known to mediate protein interactions in structurally related complexes. By contrast, the dimeric BamE is formed through a domain swap and indicates fold similarity to the β-lactamase inhibitor protein family, possibly integrating cell wall stability in BAM function. Structural and biochemical data show evidence for the specific recognition of amphipathic sequences through the tetratricopeptide repeat architecture of BamD. Collectively, our data advance the understanding of the BAM complex and highlight the functional importance of BamD in amphipathic outer membrane β-barrel protein motif recognition and protein delivery.

  • Organizational Affiliation

    Department of Protein Evolution, Max Planck Institute for Developmental Biology, Spemannstrasse 35, Tübingen 72076, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DAPX PROTEIN127Escherichia coli K-12Mutation(s): 0 
Membrane Entity: Yes 
Find proteins for P0A903 (Escherichia coli (strain K12))
Explore P0A903 
Go to UniProtKB:  P0A903
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A903
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.25 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.148 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 29.74α = 90
b = 59.12β = 116.37
c = 31.06γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-05-25
    Type: Initial release
  • Version 1.1: 2011-08-10
    Changes: Database references, Version format compliance
  • Version 1.2: 2014-02-05
    Changes: Refinement description
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references, Derived calculations, Other