The HAK1 gene of barley is a member of a large gene family and encodes a high-affinity potassium transporter.

@article{SantaMara1997TheHG,
  title={The HAK1 gene of barley is a member of a large gene family and encodes a high-affinity potassium transporter.},
  author={Guillermo E. Santa-Mar{\'i}a and Francisco Rubio and Jorge Dubcovsky and Alonso Rodr{\'i}guez-Navarro},
  journal={The Plant cell},
  year={1997},
  volume={9 12},
  pages={2281-9}
}
The high-affinity K+ uptake system of plants plays a crucial role in nutrition and has been the subject of extensive kinetic studies. However, major components of this system remain to be identified. We isolated a cDNA from barley roots, HvHAK1, whose translated sequence shows homology to the Escherichia coli Kup and Schwanniomyces occidentalis HAK1 K+ transporters. HvHAK1 conferred high-affinity K+ uptake to a K(+)-uptake-deficient yeast mutant exhibiting the hallmark characteristics of the… CONTINUE READING
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