4R1I | pdb_00004r1i

Structure and Function of Neisseria gonorrhoeae MtrF Illuminates a Class of Antimetabolite Efflux Pumps

• PDB DOI: https://doi.org/10.2210/pdb4R1I/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Neisseria gonorrhoeae FA19
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMMemProtMD


• Deposited: 2014-08-06 Released: 2015-04-08 
• Deposition Author(s): Su, C.-C., Bolla, J.R., Yu, E.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.96 Å
• R-Value Free: 
  0.338 (Depositor), 0.345 (DCC) 
• R-Value Work: 
  0.311 (Depositor), 0.315 (DCC) 
• R-Value Observed: 
  0.312 (Depositor) 

Literature

Structure and Function of Neisseria gonorrhoeae MtrF Illuminates a Class of Antimetabolite Efflux Pumps.

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

(2015) Cell Rep 11: 61-70

• PubMed: 25818299 
• DOI: https://doi.org/10.1016/j.celrep.2015.03.003
• Primary Citation Related Structures: 
  4R1I


• PubMed Abstract: 
  

  Neisseria gonorrhoeae is an obligate human pathogen and the causative agent of the sexually transmitted disease gonorrhea. The control of this disease has been compromised by the increasing proportion of infections due to antibiotic-resistant strains, which are growing at an alarming rate. N. gonorrhoeae MtrF is an integral membrane protein that belongs to the AbgT family of transporters for which no structural information is available. Here, we describe the crystal structure of MtrF, revealing a dimeric molecule with architecture distinct from all other families of transporters. MtrF is a bowl-shaped dimer with a solvent-filled basin extending from the cytoplasm to halfway across the membrane bilayer. Each subunit of the transporter contains nine transmembrane helices and two hairpins, posing a plausible pathway for substrate transport. A combination of the crystal structure and biochemical functional assays suggests that MtrF is an antibiotic efflux pump mediating bacterial resistance to sulfonamide antimetabolite drugs.

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Organizational Affiliation: 
• Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA.
Department of Chemistry, Iowa State University, Ames, IA 50011, USA.
NE-CAT and Department of Chemistry and Chemical Biology, Cornell University, Building 436E, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA.
Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA; Laboratories of Microbial Pathogenesis, VA Medical Center, Decatur, GA 30033, USA; Emory Antibiotic Resistance Center, Emory University, Atlanta, GA 30322, USA.
Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA; Department of Chemistry, Iowa State University, Ames, IA 50011, USA. Electronic address: [e-mail].

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 112.34 kDa 
• Atom Count: 7,684 
• Modeled Residue Count: 1,013 
• Deposited Residue Count: 1,044 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aminobenzoyl-glutamate transporter	A, B	522	Neisseria gonorrhoeae FA19	Mutation(s): 0  Gene Names: NGEG_01484 Membrane Entity: Yes
UniProt
Find proteins for Q9RNX2 (Neisseria gonorrhoeae) Explore Q9RNX2  Go to UniProtKB:  Q9RNX2

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.96 Å
• R-Value Free:  0.338 (Depositor), 0.345 (DCC) 
• R-Value Work:  0.311 (Depositor), 0.315 (DCC) 
• R-Value Observed: 0.312 (Depositor) 

Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 120.766	α = 90
b = 120.766	β = 90
c = 233.897	γ = 120

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
MLPHARE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-04-08 
Deposition Author(s): Su, C.-C., Bolla, J.R., Yu, E.W.

Revision History  

• Version 1.0: 2015-04-08
  Type: Initial release
  
• Version 1.1: 2015-04-29
  Changes: Database references
• Version 1.2: 2024-02-28
  Changes: Data collection, Database references