Gating the tides in yeast

Water is a crucial ingredient for life, but its level inside cells must be carefully regulated to maintain proper cell shape and size. In this week's issue of the open access journal PLoS Biology, scientists from the University of Gothenburg describe the highest resolution three-dimensional structure yet of a membrane protein, in this case of a protein channel known as an aquaporin that regulates water flow into and out of yeast cells. Virtually all living organisms use aquaporins to regulate water flow between the cell and its surroundings.

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