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Similarities between ATP-dependent and ion-coupled multidrug transporters
H Venter1, S Shahi, L Balakrishnan
1Department of Pharmacology, University of Cambridge, Cambridge CB2 1PD, UK.
Biochemical Society Transactions
|October 26, 2005
Summary
Biological membranes utilize ATP-binding cassette (ABC) transporters and secondary-active transporters for drug movement. Research on Lactococcus lactis LmrA suggests shared functional and structural traits between these transporter classes.
Area of Science:
- Biochemistry
- Molecular Biology
- Microbiology
Background:
- Biological membranes control drug passage via transporters.
- Two main classes exist: primary-active ATP-binding cassette (ABC) transporters and secondary-active transporters driven by proton or sodium gradients.
Purpose of the Study:
- To explore functional and structural similarities between primary-active ABC multidrug transporters and secondary-active multidrug transporters.
- To discuss the implications of these similarities for understanding ABC transporter mechanisms.
Main Methods:
- Comparative analysis of known primary-active ABC multidrug transporters.
- Examination of recent research on LmrA from Lactococcus lactis.
Main Results:
- Evidence suggests shared functional and structural characteristics between primary- and secondary-active multidrug transporters.
- The study highlights LmrA as a key example for comparison.
Conclusions:
- Primary-active ABC multidrug transporters and secondary-active multidrug transporters may share fundamental transport mechanisms.
- Further investigation into these similarities can elucidate the operational principles of ABC transporters.