4R1I

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

Summary for 4R1I

• Entry DOI: 10.2210/pdb4r1i/pdb
• Related: 4R0C
• Descriptor: Aminobenzoyl-glutamate transporter (1 entity in total)
• Functional Keywords: transmembrane protein, membrane protein
• Biological source: Neisseria gonorrhoeae FA19
• Total number of polymer chains: 2
• Total formula weight: 112340.40

Authors

Su, C.-C.,Bolla, J.R.,Yu, E.W. (deposition date: 2014-08-06, release date: 2015-04-08, Last modification date: 2024-02-28)

Primary citation

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.
Structure and Function of Neisseria gonorrhoeae MtrF Illuminates a Class of Antimetabolite Efflux Pumps.
Cell Rep, 11:61-70, 2015

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.

PubMed: 25818299
DOI: 10.1016/j.celrep.2015.03.003

Experimental method

X-RAY DIFFRACTION (3.959 Å)