Arabinogalactan proteins and their sugar chains: functions in plant reproduction, research methods, and biosynthesis
Arabinogalactan proteins and their sugar chains: functions in plant reproduction, research methods, and biosynthesis
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DOI：
10.1007/s00497-018-0329-2
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发表时间：
2018-02
影响因子：
3.4
通讯作者：
Shihao Su;T. Higashiyama
中科院分区：
文献类型：
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作者：
Shihao Su;T. Higashiyama
阿拉伯半乳聚糖蛋白（AGP）家族是最复杂的蛋白质家族之一，在植物界普遍存在。此外，它已被证明在植物繁殖过程中发挥各种作用。典型的AGP含有富含羟脯氨酸的核心蛋白，具有高度异质性和不同数量的多糖侧链。然而，由于糖生物学中与研究糖链相关的一般困难，多糖组分（即AG糖链）的功能在很大程度上仍然未知。近年来，方法上的突破使AGP研究取得了实质性进展。本文综述了AGPs在植物配子体发育和雌雄通讯中的作用，并重点介绍了其最新研究进展。此外，我们还讨论了AGP研究中使用的分析工具，以及AG糖链的生物合成和功能。对AGP家族的全面了解将有助于阐明精确控制生殖过程的机制。
The arabinogalactan protein (AGP) family is one of the most complex protein families and is ubiquitous in the plant kingdom. Moreover, it has been demonstrated to play various roles during plant reproduction. A typical AGP contains a hydroxyproline-rich core protein with high heterogeneity and varying numbers of polysaccharide side chains. However, the functions of the polysaccharide components (i.e. AG sugar chains) remain largely unknown due to the general difficulties associated with studying sugar chains in glycobiology. In recent years, methodological breakthroughs have resulted in substantial progress in AGP research. Here, we summarise the multiple roles of AGPs during plant gametophyte development and male–female communication, with a focus on recent advances. In addition, we discuss the analytical tools used in AGP research, and the biosynthesis and function of AG sugar chains. A comprehensive understanding of the AGP family will help clarify the mechanisms precisely controlling reproductive processes.