Article
Glycine residues in potassium channel-like selectivity filters determine potassium selectivity in four-loop-per-subunit HKT transporters from plants.
Proceedings of the National Academy of Sciences of the United States of America - 30 Apr 2002
Mäser Pascal, Hosoo Yoshihiro, Goshima Shinobu, Horie Tomoaki, Eckelman Brendan, Yamada Katsuyuki, Yoshida Kazuya, Bakker Evert P, Shinmyo Atsuhiko, Oiki Shigetoshi, Schroeder Julian I, Uozumi Nobuyuki
Abstract excerpt
Plant HKT proteins comprise a family of cation transporters together with prokaryotic KtrB, TrkH, and KdpA transporter subunits and fungal Trk proteins. These transporters contain four loop domains in one polypeptide with a proposed distant homology to K(+) channel selectivity filters. Functional expression in yeast and Xenopus oocytes revealed that wheat HKT1 mediates Na(+)-coupled K(+) transport. Arabidopsis...
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