缺陷的核58编码了一种含有Rrp15p域的蛋白质,该蛋白质对于玉米中的核糖体生物发生和种子发育至关重要
Bing Ma1, Hui Liu1, Zhi-Hui Xiu1
1The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China.
The New phytologist
|December 7, 2023
概括
玉米DEK58基因对核糖体生物发生和种子发育至关重要. 它的缺失会扰乱前核糖体RNA处理,影响植物生长.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 核糖体生物生成对植物生长至关重要,但在植物中尚不清楚.
- 酵母的进步已经阐明了许多因素,但植物特异性机制在很大程度上仍然未知.
研究的目的:
- 描述玉米DEK58基因在核糖体生物发生和种子发育中的功能.
- 确定DEK58在前核糖体RNA (前rRNA) 处理及其相互作用伙伴中的作用.
主要方法:
- 玉米突变 dek58.8. 的特征
- 基因表达分析 (过度表达救援).
- 亚细胞局部化研究 (细胞核).
- 核糖体分析和RNA凝斑分析.
- 蛋白质与蛋白质相互作用试验 (共免疫沉).
主要成果:
- DEK58编码了一种含有Rrp15p域的蛋白质,该蛋白质对于玉米种子发育至关重要.
- DEK58局部存在于细胞核中,其缺失会损害核糖体组合和rRNA前处理.
- 突变分析显示了前rRNA中间体的积累和异常的P-25S*产物.
- DEK58与ZmSSF1和ZmCK2α相互作用,它们是核糖体生物发生机制的组成部分.
结论:
- 在玉米核糖体生物发生过程中,DEK58对于早期的rRNA前处理至关重要.
- DEK58可能与ZmSSF1和ZmCK2α结合起作用.
- 这项研究为植物核糖体生物发生及其与种子发育的联系提供了关键的见解.
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