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Cation-sensitive membranes composed

It is well known that inward K+-channels at the plasma membrane are organized as tetramers, with the assembly of the four identical subunits making up a single pore for the permeation of K+ [58]. By contrast many other cation channels are composed of single polypeptides in which a set of domains corresponding to the subunit of the inward K+-channels is repeated four times to form the channel structures [58, 59]. It is therefore reasonable to suppose that cAMP-sensitive ion channels for the permeation of ions other than K+ exist and function in plant plasma membranes. The activation of these unidentified channels in response to... [Pg.497]


See other pages where Cation-sensitive membranes composed is mentioned: [Pg.127]    [Pg.127]    [Pg.202]    [Pg.308]    [Pg.282]    [Pg.348]    [Pg.302]    [Pg.89]    [Pg.89]    [Pg.677]    [Pg.143]    [Pg.370]    [Pg.2337]    [Pg.3337]    [Pg.187]   


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