Aquaporins as gas channels - PubMed (original) (raw)
Review
. 2011 Oct;462(4):623-30.
doi: 10.1007/s00424-011-1002-x. Epub 2011 Aug 2.
Affiliations
- PMID: 21809007
- DOI: 10.1007/s00424-011-1002-x
Review
Aquaporins as gas channels
Marcela Herrera et al. Pflugers Arch. 2011 Oct.
Abstract
Gas molecules play important roles in human physiology. Volatile substances produced by one cell often regulate neighboring cells in a paracrine fashion. While gaseous molecules have traditionally been thought to travel from cell to cell by free diffusion through the bilayer portion of the membrane, this does not explain their rapid physiological actions. The recent observations that: (1) water channels can transport other molecules besides water, and (2) aquaporins are often expressed in tissues where gas (but not water) transport is essential suggest that these channels conduct physiologically important gases in addition to water. This review summarizes recent findings on the role of aquaporins as gas transporters as well as their physiological significance.
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