2KM7 | pdb_00002km7

Solution Structure of BamE, a component of the outer membrane protein assembly machinery in Escherichia coli

• PDB DOI: https://doi.org/10.2210/pdb2KM7/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli K-12
• Mutation(s): Yes 
• Membrane Protein: Yes  mpstruc


• Deposited: 2009-07-24 Released: 2011-02-02 
• Deposition Author(s): Knowles, T.J., Sridhar, P., Rajesh, S., Manoli, E., Henderson, I.R., Overduin, M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 150 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Structure and function of BamE within the outer membrane and the beta-barrel assembly machine.

Knowles, T.J., Browning, D.F., Jeeves, M., Maderbocus, R., Rajesh, S., Sridhar, P., Manoli, E., Emery, D., Sommer, U., Spencer, A., Leyton, D.L., Squire, D., Chaudhuri, R.R., Viant, M.R., Cunningham, A.F., Henderson, I.R., Overduin, M.

(2011) EMBO Rep 12: 123-128

• PubMed: 21212804 
• DOI: https://doi.org/10.1038/embor.2010.202
• Primary Citation Related Structures: 
  2KM7


• PubMed Abstract: 
  

  Insertion of folded proteins into the outer membrane of Gram-negative bacteria is mediated by the essential β-barrel assembly machine (Bam). Here, we report the native structure and mechanism of a core component of this complex, BamE, and show that it is exclusively monomeric in its native environment of the periplasm, but is able to adopt a distinct dimeric conformation in the cytoplasm. BamE is shown to bind specifically to phosphatidylglycerol, and comprehensive mutagenesis and interaction studies have mapped key determinants for complex binding, outer membrane integrity and cell viability, as well as revealing the role of BamE within the Bam complex.

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Organizational Affiliation: 
• School of Cancer Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 11.45 kDa 
• Atom Count: 808 
• Modeled Residue Count: 102 
• Deposited Residue Count: 102 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Small protein A	A	102	Escherichia coli K-12	Mutation(s): 1  Membrane Entity: Yes
UniProt
Find proteins for P0A937 (Escherichia coli (strain K12)) Explore P0A937  Go to UniProtKB:  P0A937

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 150 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-02-02 
Deposition Author(s): Knowles, T.J., Sridhar, P., Rajesh, S., Manoli, E., Henderson, I.R., Overduin, M.

Revision History  

• Version 1.0: 2011-02-02
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2013-06-19
  Changes: Database references
• Version 1.3: 2021-10-13
  Changes: Database references
• Version 1.4: 2024-05-22
  Changes: Data collection