Kathleen Archer Kathleen.Archer at
Wed Sep 29 09:22:25 EST 1999

I don't know about "active" water transport, but aquaporins are channels in
the plasma membrane specifically for the movement of water into or out of
the cell.
For a general introduction see:
For info on aquaporins in mammals:

Martin Chrispeels has done work with aquaporins in plants and it appears
that in plants at least some of these are gated channels.
Kathleen Archer

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