Running Head: the Rice Oshkt2;4 Monovalent Cation Transporter the Rice Monovalent Cation Transporter Oshkt2;4: Revisited Ionic Selectivity
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چکیده
The family of plant membrane transporters named HKT (for High-affinity K + Transporters) can be subdivided into sub-families 1 and 2, which respectively comprise Na +-selective transporters and transporters able to function as Na +-K + symporters, at least when expressed in yeast or Xenopus oocytes. Surprisingly, a subfamily 2 member from rice (Oryza sativa),
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The rice monovalent cation transporter OsHKT2;4: revisited ionic selectivity.
The family of plant membrane transporters named HKT (for high-affinity K(+) transporters) can be subdivided into subfamilies 1 and 2, which, respectively, comprise Na(+)-selective transporters and transporters able to function as Na(+)-K(+) symporters, at least when expressed in yeast (Saccharomyces cerevisiae) or Xenopus oocytes. Surprisingly, a subfamily 2 member from rice (Oryza sativa), OsH...
متن کاملThe Rice Monovalent Cation Transporter OsHKT2;4: Revisited Ionic Selectivity1[W]
Biochimie et Physiologie Moléculaire des Plantes, Unité Mixte de Recherche, 5004 Centre National de la Recherche Scientifique/386 Institut National de la Recherche Agronomique/SupAgro-M/Université Montpellier 2, Campus SupAgro-M/Institut National de la Recherche Agronomique, 34060 Montpellier cedex 2, France (A.S., I.K., B.M., I.G., H.S., A.-A.V.); and Centre de Coopération Internationale en Re...
متن کاملK+ transport by the OsHKT2;4 transporter from rice with atypical Na+ transport properties and competition in permeation of K+ over Mg2+ and Ca2+ ions.
Members of class II of the HKT transporters, which have thus far only been isolated from grasses, were found to mediate Na(+)-K(+) cotransport and at high Na(+) concentrations preferred Na(+)-selective transport, depending on the ionic conditions. But the physiological functions of this K(+)-transporting class II of HKT transporters remain unknown in plants, with the exception of the unique cla...
متن کاملThe Rice High-Affinity K+ Transporter OsHKT2;4 Mediates Mg2+ Homeostasis under High-Mg2+ Conditions in Transgenic Arabidopsis
Rice (Oryza sativa; background Nipponbare) contains nine HKT (high-affinity K+ transport)-like genes encoding membrane proteins belonging to the superfamily of Ktr/TRK/HKT. OsHKTs have been proposed to include four selectivity filter-pore-forming domains homologous to the bacterial K+ channel KcsA, and are separated into OsHKT1s with Na+-selective activity and OsHKT2s with Na+-K+ symport activi...
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Objective(s): Organic cation transporter 3 (OCT3) as a high-capacity transporter contribute to the metabolism of metformin. The present study was conducted to determine the genotype frequencies of the variant OCT3-1233G>A (rs2292334) in patients with newly diagnosed type 2 diabetes (T2D) and its relationship with response to metformin. Materials and Methods: This study included 150 patients wit...
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