相关实验视频
Updated: Jul 15, 2026

Preparation of Quality Inositol Pyrophosphates
Published on: September 3, 2011
通过伊诺西铁酸盐酸盐的调节一个环林-CDK-CDK抑制剂复合物
Young-Sam Lee1, Sashidhar Mulugu, John D York
1Howard Hughes Medical Institute, Faculty of Arts and Sciences Center for Systems Biology, Department of Molecular and Cellular Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA.
米奥-d-伊诺西托尔他基酸盐 (IP7) 刺激Pho81-依赖抑制酵母中的Pho80-Pho85环林-CDK复合体. 这种代谢物对酸盐饥饿期间的营养恒常信号至关重要.
科学领域:
- 细胞代谢的细胞代谢.
- 分子生物学分子生物学
- 酵母遗传学 酵母遗传学
背景情况:
- 发芽的酵母中的酸盐饥饿会激活营养恒常基因.
- 这种激活涉及Pho81抑制剂对Pho80-Pho85环林-CDK复合物的抑制.
- 将酸盐可用性与这种抑制联系在一起的精确监管机制尚未完全理解.
研究的目的:
- 确定调节Pho80-Pho85复合体Pho81-依赖抑制的细胞组件.
- 阐明myo-d-inositol heptakisphosphate (IP7) 在酸盐饥饿信号中的作用.
主要方法:
- 作为调节分子的IP7的隔离和特征.
- 试验室试验测试IP7对Pho81-Pho85抑制的作用.
- 在酸盐饥饿条件下测量细胞内IP7水平.
- 对存在IP7生产缺陷的酵母突变的分析.
主要成果:
- 鉴定了myo-d-inositol heptakisphosphate (IP7) 作为Pho81-依赖的Pho80-Pho85抑制的刺激剂.
- 在体外,IP7对于抑制Pho81-Pho85至关重要.
- 在酸盐饥饿期间,细胞内IP7度增加.
- 缺乏IP7生产的酵母突变不能抑制Pho80-Pho85作为对酸盐饥饿的反应.
结论:
- 一种代谢物IP7直接调节一个环林-CDK复合体.
- 这一发现揭示了酵母中代谢物介导信号传递的新机制.
- 一个复杂的代谢网络可能集成酸盐可用性信号.
更多相关视频
09:22Absolute Quantitation of Inositol Pyrophosphates by Capillary Electrophoresis Electrospray Ionization Mass Spectrometry
Published on: August 13, 2021
08:07Identification of Inositol Phosphate or Phosphoinositide Interacting Proteins by Affinity Chromatography Coupled to Western Blot or Mass Spectrometry
Published on: July 26, 2019
相关概念视频
Inhibition of Cdk Activity
Inhibition of CDK Activity
Positive Regulator Molecules
Positive Regulator Molecules
Anaphase Promoting Complex
M-Cdk Drives Transition Into Mitosis
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...