6IC4

Cryo-EM structure of the A. baumannii MLA complex at 8.7 A resolution


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report



Literature

TheAcinetobacter baumanniiMla system and glycerophospholipid transport to the outer membrane.

Kamischke, C.Fan, J.Bergeron, J.Kulasekara, H.D.Dalebroux, Z.D.Burrell, A.Kollman, J.M.Miller, S.I.

(2019) Elife 8

  • DOI: 10.7554/eLife.40171
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The outer membrane (OM) of Gram-negative bacteria serves as a selective permeability barrier that allows entry of essential nutrients while excluding toxic compounds, including antibiotics. The OM is asymmetric and contains an outer leaflet of lipopo ...

    The outer membrane (OM) of Gram-negative bacteria serves as a selective permeability barrier that allows entry of essential nutrients while excluding toxic compounds, including antibiotics. The OM is asymmetric and contains an outer leaflet of lipopolysaccharides (LPS) or lipooligosaccharides (LOS) and an inner leaflet of glycerophospholipids (GPL). We screened Acinetobacter baumannii transposon mutants and identified a number of mutants with OM defects, including an ABC transporter system homologous to the Mla system in E. coli. We further show that this opportunistic, antibiotic-resistant pathogen uses this multicomponent protein complex and ATP hydrolysis at the inner membrane to promote GPL export to the OM. The broad conservation of the Mla system in Gram-negative bacteria suggests the system may play a conserved role in OM biogenesis. The importance of the Mla system to Acinetobacter baumannii OM integrity and antibiotic sensitivity suggests that its components may serve as new antimicrobial therapeutic targets.


    Organizational Affiliation

    Department of Medicine, University of Washington, Seattle, United States.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Toluene tolerance efflux transporter (ABC superfamily, PerI-bind)
A, B, C, D, E, F
183Acinetobacter baumanniiMutation(s): 0 
Gene Names: ttg2CSAMEA104305283_00402
Protein Feature View is not available: No corresponding UniProt sequence found.

Find similar proteins by: Sequence  |  Structure

Find similar proteins by: Sequence  |  Structure

Find similar proteins by: Sequence  |  Structure

Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Ttg2E
K, L
93Acinetobacter baumanniiMutation(s): 0 
Gene Names: SAMEA104305318_02185
Find proteins for A0A333U4T6 (Acinetobacter baumannii)
Go to UniProtKB:  A0A333U4T6
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-01-23
    Type: Initial release