Home List of Titles Proton motive force generation from stored polymers for the uptake of acetate under anaerobic conditions
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/232630
- Proton motive force generation from stored polymers for the uptake of acetate under anaerobic conditions
- Saunders, Aaron M.; Mabbett, Amanda N.; McEwan, Alastair G.; Blackall, Linda L.
- The bacteria facilitating enhanced biological phosphorus removal gain a selective advantage from intracellularly stored polymer-driven substrate uptake under anaerobic conditions during sequential anaerobic: aerobic cycling. Mechanisms for these unusual membrane transport processes were proposed and experimentally validated using selective inhibitors and highly-enriched cultures of a polyphosphate-accumulating organism, Accumulibacter, and a glycogen-accumulating organism, Competibacter. Acetate uptake by both Accumulibacter and Competibacter was driven by a proton motive force (PMF). Stored polymers were used to generate the PMF - Accumulibacter used phosphate efflux through the Pit transporter, while Competibacter generated a PMF by proton efflux through the ATPase and fumarate reductase in the reductive TCA cycle.
- Publication type
- Journal article
- FEMS Microbiology Letters, Vol. 274, no. 2 (Sep 2007), pp. 245-251
- Publication year
- FOR Code(s)
- 06 Biological Sciences; 07 Agricultural and Veterinary Sciences; 11 Medical and Health Sciences
- Accumulibacter; Acetates; Adenosine triphosphatase; Anaerobic metabolism; Betaproteobacteria; Candidatus competibacter; EBPR; Enhanced biological phosphorus removal; Fatty acid transport; Fumarate reductase; Gammaproteobacteria; Polyhydroxyalkanoate; Polymers; Polyphosphates; Proton motive force; Substrate uptake
- Publisher URL
- Copyright © 2007 Federation of European Microbiological Societies.
- Additional information
- Supported by the Environmental Biotechnology Cooperative Research Centre, established and supported under the Australian Government's Cooperative Research Centres Program.
- Peer reviewed