AtKUP/HAK/KT9, a K+ Transporter from Arabidopsis thaliana, Mediates Cs+ Uptake in Escherichia coli

Daisuke KOBAYASHI; Nobuyuki UOZUMI; Shun’ichi HISAMATSU; Mutsumi YAMAGAMI

doi:10.1271/bbb.90638

Biochemistry & Molecular Biology Notes

AtKUP/HAK/KT9, a K⁺ Transporter from Arabidopsis thaliana, Mediates Cs⁺ Uptake in Escherichia coli

Daisuke KOBAYASHI, Nobuyuki UOZUMI, Shun’ichi HISAMATSU, Mutsumi YAMAGAMI

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Keywords: AtKUP/HAK/KT9, cesium transport, potassium transporter

JOURNAL FREE ACCESS

2010 Volume 74 Issue 1 Pages 203-205

DOI https://doi.org/10.1271/bbb.90638

View "Advance Publication" version (January 7, 2010).

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Abstract

Although cesium is known to be absorbed by plants, the pathway by which cesium enters has not been identified. We found that the AtKUP/HAK/KT9 gene from Arabidopsis thaliana was functionally expressed in a potassium transport-deficient Escherichia coli mutant. AtKUP/HAK/KT9 mediated potassium uptake as well as cesium transport. We found that AtKUP/HAK/KT9 might be involved in the pathway in questions.

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