Kotiadis, V. N. and Leadsham, J. E. and Bastow, E. L. and Gheeraert, A. and Whybrew, J. M. and Bard, M. and Lappalainen, P. and Gourlay, C. W. (2012) Identification of new surfaces of cofilin that link mitochondrial function to the control of multi-drug resistance. Journal of Cell Science, 125 (9). pp. 2288-2299. ISSN 0021-9533.
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ADF/cofilin family proteins are essential regulators of actin cytoskeletal dynamics. Recent evidence also implicates cofilin in the regulation of mitochondrial function. Here, we identify new functional surfaces of cofilin that are linked with mitochondrial function and stress responses in the budding yeast Saccharomyces cerevisiae. Our data link surfaces of cofilin that are involved in separable activities of actin filament disassembly or stabilisation, to the regulation of mitochondrial morphology and the activation status of Ras, respectively. Importantly, charge alterations to conserved surfaces of cofilin that do not interfere with its actin regulatory activity lead to a dramatic increase in respiratory function that triggers a retrograde signal to upregulate a battery of ABC transporters and concurrent metabolic changes that support multi-drug resistance. We hypothesise that cofilin functions within a bio-sensing system that connects the cytoskeleton and mitochondrial function to environmental challenge.
|Uncontrolled keywords:||ROS; Actin; Cofilin; Mitochondria; Multi-drug resistance; Yeast|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Biosciences|
|Depositing User:||Sue Davies|
|Date Deposited:||08 Oct 2012 11:20|
|Last Modified:||30 Jan 2013 10:36|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/31358 (The current URI for this page, for reference purposes)|
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