相关实验视频
Updated: Jun 13, 2025

10:25
Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
4.8K
CDK11是一种调节基因表达的拼接相关激酶.
Milan Hluchý1, Dalibor Blazek1
1Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic.
Trends in cell biology
|September 8, 2024
概括
循环素依赖激酶 (CDK) 11通过控制通过SF3B1酸化的spliceosome激活来调节基因表达. 这种激酶对于甲基动物的mRNA前剪接,转录和细胞周期进展至关重要.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
背景情况:
- 基因表达依赖于RNA聚合酶II (RNAPII) 和结合体对前mRNA的精确转录和拼接.
- 剪接酶激活是前mRNA处理中的关键调节步骤.
- 循环素依赖激酶 (CDK) 11已被确定为spliceosome激活的关键调节器.
研究的目的:
- 审查CDK11和SF3B1.1.的演变情况.
- 阐明CDK11和SF3B1在拼接调节中的新兴作用.
- 讨论CDK11及其对转录和细胞周期进展的抑制的影响.
主要方法:
- 对CDK11和SF3B1.1.的进化和功能研究的文献综述.
- 分析现有关于结合体激活机制的数据.
- 讨论CDK11,SF3B1,转录和细胞循环之间的相互作用.
主要成果:
- CDK11化SF3B1,这是一个核心结合体组件,从而调节结合体激活.
- CDK11通过控制前mRNA剪接的速度限制步骤,起到基因表达的主要协调者的作用.
- CDK11对转录和细胞周期进展都有影响.
结论:
- CDK11是基因表达的关键调节者,通过其在结合体激活中的作用.
- 了解CDK11-SF3B1相互作用,可以深入了解拼接调节.
- CDK11的影响扩展到转录和细胞周期控制,突出其在细胞过程中的重要性.
相关概念视频
Inhibition of Cdk Activity
4.7K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
4.7K
M-Cdk Drives Transition Into Mitosis
5.5K
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
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...
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...
5.5K
Positive Regulator Molecules
5.4K
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
5.4K
Anaphase Promoting Complex
2.8K
The stepwise destruction of specific proteins is necessary for the progression and completion of the cell cycle. Such proteins are ubiquitinated by ubiquitin ligases and then subsequently destroyed by the proteasome. The SCF (Skp1/Cullin/F-box) and the anaphase-promoting complex (APC) are two important ubiquitin ligases involved in cell cycle progression. While SCF is active throughout the cell cycle, APC gets activated during metaphase to anaphase transition. Cdc20 or Cdh1 binds to APC and...
2.8K
MAPK Signaling Cascades
5.3K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
5.3K
Negative Regulator Molecules
35.2K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
35.2K

