通过蛋白质的化学合成实现的向二维基基因酶
Shimrit Ohayon1, Liat Spasser, Amir Aharoni
1Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel.
Journal of the American Chemical Society
|January 28, 2012
概括
研究人员开发了一种新的基于FRET的测定方法,用于选二维基化酶 (DUB) 抑制剂. 这项测试确定了UCH-L3的强有力的抑制剂,有助于对DUB相关疾病的药物发现.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 乌比基因化是一种关键的翻译后修饰,调节重要的细胞过程.
- 脱基因酶 (DUBs) 清除无素,影响细胞循环,发育和疾病.
- DUBs是治疗目标,但药物发现面临挑战,包括测试限制.
研究的目的:
- 设计和验证一种基于FRET的新型试验,用于对DUB抑制剂进行高通量选.
- 确定新型二维基基因酶抑制剂,特别针对UCH-L3.
主要方法:
- 开发了一种基于FRET的测试方法,使用化学合成的标记FRET对的无化.
- 使用开发的测试方法对1000种化合物的库进行了对UCH-L3酶的选.
- 描述了已识别的抑制剂的强度和作用机制.
主要成果:
- 成功开发并实施了一种基于FRET的敏感试验,用于DUB查.
- 鉴定了一种具有特定动力参数的新型,强效的UCH-L3抑制剂 (k(无活性) = 0.065 min(-1),K(i) = 0.8 μM).
- 证明了该试验对其他DUBs的适用性,例如UCH-L1.
结论:
- 新型FRET试验可促进对DUB抑制剂的有效选.
- 鉴定出强效的UCH-L3抑制剂代表了治疗开发的有前途的化合物.
- 这种测试平台支持对乌比奎丁系统在健康和疾病中的作用的研究.
相关概念视频
The Proteasome
Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3 (ubiquitin...
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3 (ubiquitin...
The Proteasome
Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. A series of enzymes carry out the ubiquitination of the target proteins - E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. A series of enzymes carry out the ubiquitination of the target proteins - E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...
Regulated 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...
Covalently 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.
The Proteasome Structure
The ubiquitin-proteasome pathway is a well-known mechanism utilized by eukaryotic cells to remove cytoplasmic proteins that are misfolded, damaged, or no longer needed. In this pathway, the protein that needs to be eliminated undergoes a process called ubiquitination, where a chain of ubiquitin molecules is attached to the 48th lysine residue of the target protein. This ubiquitin modification helps the proteasome distinguish between a target protein and a healthy protein.
The proteasome is an...
The proteasome is an...


