3w9j: Difference between revisions
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{{STRUCTURE_3w9j| PDB=3w9j | SCENE= }} | |||
===Structural basis for the inhibition of bacterial multidrug exporters=== | |||
The | ==Function== | ||
[[http://www.uniprot.org/uniprot/MEXB_PSEAE MEXB_PSEAE]] The inner membrane transporter component of the MexAB-OprM efflux system that confers multidrug resistance. Also functions as the major efflux pump for n-hexane and p-xylene efflux. Over-expression of the pump increases antibiotic and solvent efflux capacities. Implicated in the secretion of the siderophore pyoverdine.<ref>PMID:8226684</ref> <ref>PMID:8540696</ref> <ref>PMID:9603892</ref> The ability to export antibiotics and solvents is dramatically decreased in the presence of the proton conductor carbonyl cyanide m-chlorophenylhydrazone (CCCP), showing that an energized inner membrane is required for efflux. It is thought that the MexB subunit is a proton antiporter.<ref>PMID:8226684</ref> <ref>PMID:8540696</ref> <ref>PMID:9603892</ref> | |||
==About this Structure== | |||
[[3w9j]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Pseudomonas_aeruginosa_pao1 Pseudomonas aeruginosa pao1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3W9J OCA]. | |||
==Reference== | |||
<references group="xtra"/><references/> | |||
[[Category: Pseudomonas aeruginosa pao1]] | |||
[[Category: Hayashi, K.]] | |||
[[Category: Nakashima, R.]] | |||
[[Category: Sakurai, K.]] | |||
[[Category: Yamaguchi, A.]] | |||
[[Category: Efflux pump]] | |||
[[Category: Inner membrane]] | |||
[[Category: Membrane protein]] | |||
[[Category: Mexa]] | |||
[[Category: Mexb]] | |||
[[Category: Multidrug efflux pump]] | |||
[[Category: Oprm]] | |||
[[Category: Transport protein]] | |||
[[Category: Transporter]] | |||
Revision as of 14:12, 3 July 2013
Structural basis for the inhibition of bacterial multidrug exporters
Function
[MEXB_PSEAE] The inner membrane transporter component of the MexAB-OprM efflux system that confers multidrug resistance. Also functions as the major efflux pump for n-hexane and p-xylene efflux. Over-expression of the pump increases antibiotic and solvent efflux capacities. Implicated in the secretion of the siderophore pyoverdine.[1] [2] [3] The ability to export antibiotics and solvents is dramatically decreased in the presence of the proton conductor carbonyl cyanide m-chlorophenylhydrazone (CCCP), showing that an energized inner membrane is required for efflux. It is thought that the MexB subunit is a proton antiporter.[4] [5] [6]
About this Structure
3w9j is a 6 chain structure with sequence from Pseudomonas aeruginosa pao1. Full crystallographic information is available from OCA.
Reference
- ↑ Poole K, Krebes K, McNally C, Neshat S. Multiple antibiotic resistance in Pseudomonas aeruginosa: evidence for involvement of an efflux operon. J Bacteriol. 1993 Nov;175(22):7363-72. PMID:8226684
- ↑ Li XZ, Nikaido H, Poole K. Role of mexA-mexB-oprM in antibiotic efflux in Pseudomonas aeruginosa. Antimicrob Agents Chemother. 1995 Sep;39(9):1948-53. PMID:8540696
- ↑ Li XZ, Zhang L, Poole K. Role of the multidrug efflux systems of Pseudomonas aeruginosa in organic solvent tolerance. J Bacteriol. 1998 Jun;180(11):2987-91. PMID:9603892
- ↑ Poole K, Krebes K, McNally C, Neshat S. Multiple antibiotic resistance in Pseudomonas aeruginosa: evidence for involvement of an efflux operon. J Bacteriol. 1993 Nov;175(22):7363-72. PMID:8226684
- ↑ Li XZ, Nikaido H, Poole K. Role of mexA-mexB-oprM in antibiotic efflux in Pseudomonas aeruginosa. Antimicrob Agents Chemother. 1995 Sep;39(9):1948-53. PMID:8540696
- ↑ Li XZ, Zhang L, Poole K. Role of the multidrug efflux systems of Pseudomonas aeruginosa in organic solvent tolerance. J Bacteriol. 1998 Jun;180(11):2987-91. PMID:9603892
