AtKUP/HAK/KT9, a K+ transporter from Arabidopsis thaliana, mediates Cs+ uptake in Escherichia coli.
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.
Kobayashi
Daisuke
D
Department of Radioecology, Institute for Environmental Sciences, Kamikita, Aomori, Japan.
Uozumi
Nobuyuki
N
Hisamatsu
Shun'ichi
S
Yamagami
Mutsumi
M
D017360:Arabidopsis; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D001692:Biological Transport; D027682:Cation Transport Proteins / Q000235:genetics / Q000378:metabolism*; D002586:Cesium / Q000378:metabolism* / Q000494:pharmacology; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000187:drug effects / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*
D029681:Arabidopsis Proteins; D027682:Cation Transport Proteins; C548355:At4g19960 protein, Arabidopsis; D002586:Cesium; D011188:Potassium