在无脊椎动物中Cdk4/6-Cdkn2系统的演变
Shiori Yuki1, Shunsuke Sasaki2, Yuta Yamamoto2
1Graduate School of Arts and Sciences, Iwate University, Morioka, Japan.
Genes to cells : devoted to molecular & cellular mechanisms
|October 9, 2024
概括
在无脊椎动物中分析了循环素依赖激酶4/6 (Cdk4/6) 和其抑制剂,循环素依赖激酶抑制剂2 (Cdkn2). 它们的相互作用是保存的,Cdkn2在进化上与Fas相关因子1联系在一起.
科学领域:
- 细胞生物学 细胞生物学
- 进化生物学 进化生物学
- 生物化学 生物化学
背景情况:
- 细胞循环的进展是由循环素依赖激酶 (Cdks) 调节的.
- G1阶段的决策由Cdk4/6控制,由Cdkn2.6抑制.
- 哺乳动物研究主要为Cdk4/6和Cdkn2相互作用提供信息.
研究的目的:
- 在无脊椎动物中全面分析Cdk4/6和Cdkn2的进化分布和相互作用.
- 调查关键残留物 (Cdkn2中的D84,Cdk4中的R24/31) 的保存,这些残留物与它们的相互作用有关.
- 探索Cdkn2和Fas相关因子1 (Faf1) 之间的进化联系.
主要方法:
- 在各种无脊椎动物群中对Cdk4/6和Cdkn2进行比较基因组分析.
- 生物信息分析以评估氨基酸残留的保存,这对于蛋白质与蛋白质相互作用至关重要.
- 统计相关性分析以确定Cdkn2存在与残留物保存之间的关系.
- 遗传学分析研究Cdkn2和Faf1.1的共同进化.
主要成果:
- 在无脊椎动物中,Cdk4/6分布广泛,而Cdkn2分布不均.
- 在Cdk4/6中R24/31的正电荷在具有Cdkn2.6的物种中保持.
- 在Cdkn2的存在和正电荷在R24/31保持之间存在统计学上显著的相关性.
- Cdkn2与Faf1表现出强烈的进化联系,这是由保存的微合成表明的.
结论:
- 在无脊椎动物中,Cdk4/6和Cdkn2之间的相互作用在进化过程中得到保存,这表明它具有功能意义.
- 特定残留物的保存和与Faf1的联系突出了塑造这些细胞循环调节者的关键进化压力.
- 需要进一步的研究来阐明Cdkn2-Faf1关联和保存的微合成的功能影响.
相关概念视频
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
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
The Cell Cycle Control System
2.6K
The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and...
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and...
2.6K
S-Cdk Initiates DNA Replication
4.7K
The cell cycle is a series of events leading to DNA duplication followed by the division of cell content to form two daughter cells. The cell cycle progresses in four stages—the cell increases in size (gap 1 or G1-phase), duplicates its DNA (synthesis or S-phase), prepares to divide (gap 2 or G2-phase), and divides (mitosis or M-phase).
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of...
Two states at the origin of replication
In eukaryotes, the initiation of replication occurs at many sites on the chromosomes, called the origins of...
4.7K
Cadherins in Tissue Organization
3.0K
The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
Cell Sorting During Development
Cell sorting plays an...
3.0K


