Crystal Structure of the Neisseria gonorrhoeae MtrD Inner Membrane Multidrug Efflux Pump

Experimental Data Snapshot

  • Resolution: 3.54 Å
  • R-Value Free: 0.333 
  • R-Value Work: 0.280 
  • R-Value Observed: 0.282 

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Crystal structure of the open state of the Neisseria gonorrhoeae MtrE outer membrane channel.

Lei, H.T.Chou, T.H.Su, C.C.Bolla, J.R.Kumar, N.Radhakrishnan, A.Long, F.Delmar, J.A.Do, S.V.Rajashankar, K.R.Shafer, W.M.Yu, E.W.

(2014) PLoS One 9: e97475-e97475

  • DOI: https://doi.org/10.1371/journal.pone.0097475
  • Primary Citation of Related Structures:  
    4MT0, 4MT1

  • PubMed Abstract: 

    Active efflux of antimicrobial agents is one of the most important strategies used by bacteria to defend against antimicrobial factors present in their environment. Mediating many cases of antibiotic resistance are transmembrane efflux pumps, composed of one or more proteins. The Neisseria gonorrhoeae MtrCDE tripartite multidrug efflux pump, belonging to the hydrophobic and amphiphilic efflux resistance-nodulation-cell division (HAE-RND) family, spans both the inner and outer membranes of N. gonorrhoeae and confers resistance to a variety of antibiotics and toxic compounds. We here describe the crystal structure of N. gonorrhoeae MtrE, the outer membrane component of the MtrCDE tripartite multidrug efflux system. This trimeric MtrE channel forms a vertical tunnel extending down contiguously from the outer membrane surface to the periplasmic end, indicating that our structure of MtrE depicts an open conformational state of this channel.

  • Organizational Affiliation

    Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, United States of America; Laboratories of Microbial Pathogenesis, VA Medical Center, Decatur, Georgia, United States of America.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Drug efflux protein1,056Neisseria gonorrhoeae PID332Mutation(s): 0 
Gene Names: NGJG_01522
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.54 Å
  • R-Value Free: 0.333 
  • R-Value Work: 0.280 
  • R-Value Observed: 0.282 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 152.995α = 90
b = 152.995β = 90
c = 360.746γ = 120
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
ADSCdata collection
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-08-06
    Type: Initial release
  • Version 1.1: 2024-02-28
    Changes: Data collection, Database references