通过全球蛋白质稳定性概况识别SCF泛素结合酶基质的识别
Hsueh-Chi Sherry Yen1, Stephen J Elledge
1Department of Genetics, Center for Genetics and Genomics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA.
Science (New York, N.Y.)
|November 8, 2008
概括
研究人员开发了新的遗传技术来识别ubiquitin联酶-基质对,发现了350多个潜在的点,这些点参与了关键的细胞过程,如细胞周期调节和细胞亡.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 乌比基介导的蛋白质分解对于细胞功能至关重要,与人类疾病相关的干扰.
- 识别特定的乌比奎丁酶基质相互作用至关重要,但具有挑战性,阻碍了研究进展.
研究的目的:
- 开发和应用新型遗传技术,用于大规模识别无素结合酶基质.
- 为了研究哺乳动物细胞中Skp1-cullin-F-box (SCF) 泛素化酶的基质特异性.
主要方法:
- 全球蛋白稳定性 (GPS) 分析结合对E3酶活性的遗传干扰.
- 在哺乳动物细胞系统中选SCF泛素酶的基质.
主要成果:
- 识别了350多种潜在的泛素化酶基质,包括已知和新的标.
- 发现了参与细胞周期,细胞亡和信号通路等关键细胞过程的基质.
- 通过SCF和其他E3结合酶观察到细胞周期阶段特定的基质调节.
结论:
- 开发的基因技术为全球发现E3基底监管网络提供了一个强大的平台.
- 这种方法显著扩大了对哺乳动物细胞中泛胺介导蛋白解的理解.
相关概念视频
02:58Regulated Protein Degradation
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
02:04Covalently Linked Protein Regulators
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein.
These groups modify specific amino acids in a protein.