PMID:10894736
| Citation |
Zgurskaya, HI and Nikaido, H (2000) Cross-linked complex between oligomeric periplasmic lipoprotein AcrA and the inner-membrane-associated multidrug efflux pump AcrB from Escherichia coli. J. Bacteriol. 182:4264-7 |
|---|---|
| Abstract |
In Escherichia coli, the intrinsic levels of resistance to multiple antimicrobial agents are produced through expression of the three-component multidrug efflux system AcrAB-TolC. AcrB is a proton-motive-force-dependent transporter located in the inner membrane, and AcrA and TolC are accessory proteins located in the periplasm and the outer membrane, respectively. In this study, these three proteins were expressed separately, and the interactions between them were analyzed by chemical cross-linking in intact cells. We show that AcrA protein forms oligomers, most probably trimers. In this oligomeric form, AcrA interacts specifically with AcrB transporter independently of substrate and TolC. |
| Links | |
| Keywords |
Bacterial Proteins/metabolism; Carrier Proteins; Drug Resistance, Microbial; Electrophoresis, Polyacrylamide Gel; Escherichia coli/metabolism; Escherichia coli Proteins; Lipoproteins/metabolism; Membrane Proteins/metabolism; Membrane Transport Proteins; Multidrug Resistance-Associated Proteins; Protein Binding; Protein Structure, Secondary |
| edit table |
Significance
You can help EcoliWiki by summarizing why this paper is useful
Useful Materials and Methods
You can help Ecoliwiki by describing the useful materials (strains, plasmids, antibodies, etc) described in this paper.
Annotations
<annotationlinks/>
EcoliWiki Links
Add links to pages that link here (e.g. gene, product, method pages)
References
See Help:References for how to manage references in EcoliWiki.