Freeways in the plant: transporters for N, P and S and their regulation.
Freeways in the plant: transporters for N, P and S and their regulation.
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DOI：
10.1016/j.pbi.2009.04.010
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发表时间：
2009-06
影响因子：
9.5
通讯作者：
A. Miller;Q. Shen;Guohua Xu
中科院分区：
文献类型：
--
作者：
A. Miller;Q. Shen;Guohua Xu
本文综述了氮、磷、硫等无机形态在植物体内的吸收和转运。膜转运蛋白家族已被鉴定，并且几个成员已被很好地表征。虽然有些家族很大，但特定的成员可能在特定的膜或细胞类型中表达，或者在发育过程中的某些时间表达。因此，每个转运蛋白都可以具有特定的活性，功能冗余的概念是值得怀疑的。结构相关的蛋白质可以介导植物内的所有运输步骤，包括从土壤中的吸收。虽然运输机制和膜位置可能不同，但正在出现的图片表明序列同源性可能是每种蛋白质运输的营养素的合理指标。
This review focuses on plant acquisition and transport of the inorganic forms of nitrogen, phosphorus and sulfur. Families of membrane transporters have been identified and several members are well characterised. Although some families are large, specific members may be expressed in a particular membrane or cell type, or at certain times during development. Therefore, each transporter can have specific activities and the concept of functional redundancy is questionable. Structurally related proteins can mediate all transport steps within the plant, including uptake from the soil. Although transport mechanisms and membrane locations may be different, a picture is emerging that suggests sequence homology can be a reasonable indicator of the nutrient that is transported by each protein.