3SNS

Crystal structure of the C-terminal domain of Escherichia coli lipoprotein BamC


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Crystallographic analysis of the C-terminal domain of the Escherichia coli lipoprotein BamC.

Kim, K.H.Aulakh, S.Tan, W.Paetzel, M.

(2011) Acta Crystallogr Sect F Struct Biol Cryst Commun 67: 1350-1358

  • DOI: https://doi.org/10.1107/S174430911103363X
  • Primary Citation of Related Structures:  
    3SNS

  • PubMed Abstract: 

    In Gram-negative bacteria, the BAM complex catalyzes the essential process of assembling outer membrane proteins. The BAM complex in Escherichia coli consists of five proteins: one β-barrel membrane protein, BamA, and four lipoproteins, BamB, BamC, BamD and BamE. Here, the crystal structure of the C-terminal domain of E. coli BamC (BamC(C): Ala224-Ser343) refined to 1.5 Å resolution in space group H3 is reported. BamC(C) consists of a six-stranded antiparallel β-sheet, three α-helices and one 3(10)-helix. Sequence and surface analysis reveals that most of the conserved residues within BamC(C) are localized to form a continuous negatively charged groove that is involved in a major crystalline lattice contact in which a helix from a neighbouring BamC(C) binds against this surface. This interaction is topologically and architecturally similar to those seen in the substrate-binding grooves of other proteins with BamC-like folds. Taken together, these results suggest that an identified surface on the C-terminal domain of BamC may serve as an important protein-binding surface for interaction with other BAM-complex components or substrates.


  • Organizational Affiliation

    Molecular Biology and Biochemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lipoprotein 34120Escherichia coli K-12Mutation(s): 0 
Gene Names: b2477dapXJW2462nlpB
Membrane Entity: Yes 
UniProt
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
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.162 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.85α = 90
b = 78.85β = 90
c = 52.9γ = 120
Software Package:
Software NamePurpose
Mxdata collection
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-08-24
    Type: Initial release
  • Version 1.1: 2011-11-09
    Changes: Database references
  • Version 1.2: 2011-12-14
    Changes: Database references
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description