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Monomer structures of AQP4 in different membranes in two views rotated 90° in the plane of the membrane. The channel colored in green was embedded in a (C14:0)(C14:0)PC bilayer, whereas the red channel was embedded in a (C22:1)(22:1)PC bilayer. The arrows point down the middle of the channel. A red circle highlights the major differences in structure between AQP4 in these bilayers.
