4XGA

Crystal structure of BamB and BamA P3-5 complex from E.coli


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 

Starting Models: experimental
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This is version 1.2 of the entry. See complete history


Literature

Structural basis for the interaction of BamB with the POTRA3-4 domains of BamA.

Chen, Z.Zhan, L.H.Hou, H.F.Gao, Z.Q.Xu, J.H.Dong, C.Dong, Y.H.

(2016) Acta Crystallogr D Struct Biol 72: 236-244

  • DOI: https://doi.org/10.1107/S2059798315024729
  • Primary Citation of Related Structures:  
    4XGA

  • PubMed Abstract: 

    In Escherichia coli, the Omp85 protein BamA and four lipoproteins (BamBCDE) constitute the BAM complex, which is essential for the assembly and insertion of outer membrane proteins into the outer membrane. Here, the crystal structure of BamB in complex with the POTRA3-4 domains of BamA is reported at 2.1 Å resolution. Based on this structure, the POTRA3 domain is associated with BamB via hydrogen-bonding and hydrophobic interactions. Structural and biochemical analysis revealed that the conserved residues Arg77, Glu127, Glu150, Ser167, Leu192, Leu194 and Arg195 of BamB play an essential role in interaction with the POTRA3 domain.


  • Organizational Affiliation

    Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Outer membrane protein assembly factor BamB373Escherichia coli K-12Mutation(s): 0 
Gene Names: bamByfgLb2512JW2496
Membrane Entity: Yes 
UniProt
Find proteins for P77774 (Escherichia coli (strain K12))
Explore P77774 
Go to UniProtKB:  P77774
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP77774
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Outer membrane protein assembly factor BamA246Escherichia coli K-12Mutation(s): 0 
Gene Names: bamAyaeTyzzNyzzYb0177JW0172
Membrane Entity: Yes 
UniProt
Find proteins for P0A940 (Escherichia coli (strain K12))
Explore P0A940 
Go to UniProtKB:  P0A940
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A940
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.035α = 90
b = 109.642β = 90
c = 49.488γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-01-20
    Type: Initial release
  • Version 1.1: 2016-03-09
    Changes: Database references
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description