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高等植物中肽及其转运体的谜之变体

Enigma variations for peptides and their transporters in higher plants.

作者信息

Waterworth Wanda M, Bray Clifford M

机构信息

Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK.

出版信息

Ann Bot. 2006 Jul;98(1):1-8. doi: 10.1093/aob/mcl099. Epub 2006 May 30.

Abstract

BACKGROUND

Two families of proteins that transport small peptides, the oligopeptide transporters (OPTs) and the peptide transporters (PTRs), have been recognized in eukaryotes. Higher plants contain a far greater number of genes for these transporters than do other eukaryotes. This may be indicative of the relative importance of (oligo)peptides and their transport to plant growth and metabolism.

RECENT PROGRESS

Recent studies are now allowing us to assign functions to these transporters and are starting to identify their in-planta substrates, revealing unexpected and important contributions of the transporters to plant growth and developmental processes. This Botanical Briefing appraises recent findings that PTRs and OPTs have key roles to play in the control of plant cell growth and development. Evidence is presented that some of these transporters have functions outside that of nitrogen nutrition and that these carriers can also surprise us with their totally unexpected choice of substrates.

摘要

背景

真核生物中已识别出两类转运小肽的蛋白质家族,即寡肽转运蛋白(OPTs)和肽转运蛋白(PTRs)。高等植物中这些转运蛋白的基因数量比其他真核生物多得多。这可能表明(寡)肽及其转运对植物生长和代谢的相对重要性。

近期进展

最近的研究使我们能够确定这些转运蛋白的功能,并开始识别它们在植物体内的底物,揭示了转运蛋白对植物生长和发育过程的意外而重要的贡献。本植物学简报评估了最近的研究结果,即PTRs和OPTs在控制植物细胞生长和发育中发挥关键作用。有证据表明,其中一些转运蛋白具有氮营养以外的功能,并且这些载体对底物的选择也完全出乎意料,令人惊讶。

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