An emerging consensus on aquaporin translocation as a regulatory mechanism

CONNER, Alex C., CONNER, Matthew T. and BILL, Roslyn M. (2013). An emerging consensus on aquaporin translocation as a regulatory mechanism. Molecular Membrane Biology, 30 (1), 1-12.

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Official URL: http://dx.doi.org/10.3109/09687688.2012.743194
Link to published version:: 10.3109/09687688.2012.743194

Abstract

Water passes through cell membranes relatively slowly by diffusion. In order to maintain water homeostasis, the rapid and specific regulation of cellular water flow is mediated by the aquaporin (AQP) family of membrane protein water channels. The wide range of tissues that are known to express AQPs is reflected by their involvement in many physiological processes and diseases; thirteen human AQPs have been identified to date and the majority are highly specific for water while others show selectivity for water, glycerol and other small solutes. Receptor mediated translocation, via hormone activation, is an established method of AQP regulation, especially for AQP2. There is now an emerging consensus that the rapid and reversible translocation of other AQPs from intracellular vesicles to the plasma membrane, triggered by a range of stimuli, confers altered membrane permeability thereby acting as a regulatory mechanism. This review examines the molecular components that may enable such AQP regulation; these include cytoskeletal proteins, kinases, calcium and retention or localization signals. Current knowledge on the dynamic regulation of sub-cellular AQP translocation in response to a specific trigger is explored in the context of the regulation of cellular water flow. Keywords: Aquaporin regulation, translocation, water homeostasis

Item Type: Article
Research Institute, Centre or Group: Biomedical Research Centre
Identification Number: 10.3109/09687688.2012.743194
Depositing User: Marguerite Lyons
Date Deposited: 11 Dec 2012 14:48
Last Modified: 11 Dec 2012 14:48
URI: http://shura.shu.ac.uk/id/eprint/6548

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