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Updated: Jun 23, 2026
04:36
Assay for Adhesion and Agar Invasion in S. cerevisiae
Published on: November 8, 2006
一种假定的蛋白质激酶克服了S. cerevisiae细胞循环中费洛蒙诱导的细胞循环停止
W E Courchesne1, R Kunisawa, J Thorner
1Department of Biochemistry, University of California, Berkeley 94720.
Cell
|September 22, 1989
概括
过度表达KSS1基因有助于酵母细胞从伴侣激素诱导的细胞循环停止中恢复. 这种KSS1基因功能独立于其他已知的恢复途径,涉及WHI1基因.
科学领域:
- 分子生物学分子生物学
- 细胞循环规则 细胞循环规则
- 酵母遗传学 酵母遗传学
背景情况:
- 酵母交配费洛蒙诱导G1细胞周期停止.
- 从这种停止中恢复需要特定的细胞过程,包括涉及SST2基因产物和α因子受体细胞质尾巴的细胞过程.
研究的目的:
- 为了研究KSS1基因在酵母细胞周期从费洛蒙诱导的停止中恢复的作用.
- 为了确定涉及到对交配费洛蒙无敏化的新途径.
主要方法:
- 酵母突变的遗传分析 (具有sst2突变的MATa细胞).
- 基因过度表达研究 (KSS1基因).
- 对缺乏细胞质尾巴的α因子受体变异的分析.
- 研究基因相互作用 (KSS1和WHI1).
主要成果:
- 过度表达KSS1基因抑制了sst2突变细胞中的恢复缺陷.
- 过度表达KSS1也可以挽救细胞中的缺陷,这些细胞具有截断的α因子受体.
- 在促进脱敏的过程中,KSS1独立于SST2和受体尾部起作用.
- KSS1的恢复活动取决于WHI1基因,这表明共享的途径.
结论:
- KSS1编码了一种蛋白质激酶,该蛋白质激酶代表了第三个独立的途径,用于消毒和恢复费洛蒙停止.
- KSS1和WHI1 (一种环素同类物) 可能在共同的生长控制途径中一起运行.
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