酵母真空碳酸酶Y的分类受体是由VPS10基因编码的
E G Marcusson1, B F Horazdovsky, J L Cereghino
1Division of Cellular and Molecular Medicine, University of California, San Diego School of Medicine, La Jolla 92093-0668.
Cell
|May 20, 1994
概括
VPS10基因产物Vps10p充当了分类酵母中真空蛋白碳氧酶Y (CPY) 的受体. 这种蛋白质对于将CPY导向真空细胞至关重要,防止其分泌.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 酵母遗传学 酵母遗传学
背景情况:
- 真空蛋白质分类对于细胞功能至关重要.
- 碳氧酸酶Y (CPY) 是Saccharomyces cerevisiae中的一个关键的可溶真空蛋白.
- 在CPY分类中VPS10基因的作用以前是未知的.
研究的目的:
- 为了阐明S. cerevisiae VPS10基因的功能.
- 确定Vps10p调解CPY分类的机制.
- 描述Vps10p和CPY之间的相互作用.
主要方法:
- 基因突变分析 (vps10突变者).
- 化学交叉链接用于研究蛋白质相互作用.
- 亚细胞分离以确定蛋白质定位.
- 对具有CPY分类信号的混合蛋白进行分析.
主要成果:
- VPS10中的突变导致CPY的分泌,而其他真空蛋白质被正确分类.
- Vps10p与CPY的戈尔吉修饰前体直接相互作用.
- Vps10p与CPY的分类信号结合,并与其他蛋白质融合.
- Vps10p定位在参与真空蛋白质分类的晚期戈尔吉区.
结论:
- VPS10编码了一个特定的受体 (Vps10p) 用于CPY的真空分类.
- Vps10p通过与其排序信号相互作用来调节CPY排序.
- Vps10p可能会在戈尔吉河和前流层之间循环,以方便分类.
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