Model of Cation Transportation Mediated by High-Affinity Potassium Transporters (HKTs) in Higher Plants.

Model of Cation Transportation Mediated by High-Affinity Potassium Transporters (HKTs) in Higher Plants.
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高等植物中高亲和力钾转运蛋白 (HKT) 介导的阳离子运输模型

DOI:
10.1186/s12575-014-0013-3
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发表时间:
2015
影响因子:
6.4
通讯作者:
Kabir MH
Kabir MH
中科院分区:
生物学3区
文献类型:
--
作者:
Su Y;Luo W;Lin W;Ma L;Kabir MH

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Trk/Ktr/HKT转运体可能是从简单的K+通道KcsA进化而来的。在高等植物中,HKT转运体可分为三个亚科,介导Na+-单转运或Na+/K+-同转运,维持K+/Na+稳态,提高耐盐性。本文系统分析了高等植物中HKT转运体的氨基酸序列特征和生理功能。此外,为了更好地理解阳离子的运输过程,我们根据高度保守的结构描述了由HKT转运体介导的阳离子选择和运输的假设模型。
Trk/Ktr/HKT transporters probably were evolved from simple K+channels KcsA. HKT transporters, which mediate Na+-uniport or Na+/K+-symport, maintain K+/Na+homeostasis and increase salinity tolerance, can be classified into three subfamilies in higher plants. In this review, we systematically analyzed the characteristics of amino acids sequences and physiological functions of HKT transporters in higher plant. Furthermore, we depicted the hypothetical models of cations selection and transportation mediated by HKT transporters according to the highly conserved structure for the goal of better understanding the cations transportation processes.
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