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Cover picture: Putative transmembrane segments of P2X receptor channels. (Left panels) TM1 and the outer region
of TM2 are depicted as α-helices where residues in red are suggested to contribute to stabilizing the closed
conformation of the channel. Regions proposed to move during gating are shaded grey. (Right panels) Postulated
arrangement of the TMs in the outer and inner regions of the membrane (see article by Silberberg et al., 347-359).
[Table of Contents]
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