PMID:
     1585180
Authors:
     Sentenac H, Bonneaud N, Minet M, Lacroute F, Salmon JM, Gaymard F,
     Grignon C.
Title:
     Cloning and expression in yeast of a plant potassium ion transport system.
Journal:
     Science. 1992 May 1;256(5057):663-5.
Abstract:
     A membrane polypeptide involved in K+ transport in a higher plant was cloned by
     complementation of a yeast mutant defective in K+ uptake with a complementary DNA
     library from Arabidopsis thaliana. A 2.65-kilobase complementary DNA conferred
     ability to grow on media with K+ concentration in the micromolar range and to
     absorb K+ (or 86Rb+) at rates similar to those in wild-type yeast. The predicted 
     amino acid sequence (838 amino acids) has three domains: a channel-forming region
     homologous to animal K+ channels, a cyclic nucleotide-binding site, and an
     ankyrin-like region.

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