Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Positive Regulator Molecules02:39

Positive Regulator Molecules

6.4K
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.
6.4K
Positive Regulator Molecules01:45

Positive Regulator Molecules

133.1K
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
133.1K
Inhibition of Cdk Activity02:34

Inhibition of Cdk Activity

5.5K
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...
5.5K
M-Cdk Drives Transition Into Mitosis02:15

M-Cdk Drives Transition Into Mitosis

6.2K
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...
6.2K
Anaphase Promoting Complex00:50

Anaphase Promoting Complex

3.3K
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...
3.3K
Separation of Sister Chromatids02:17

Separation of Sister Chromatids

4.2K
At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
At the onset of anaphase, separase, a proteolytic enzyme, is...
4.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Drosha Dice(r)ing lipid metabolism in the liver.

Cell chemical biology·2026
Same author

Global molecular landscape of early MASLD progression in human obesity.

eLife·2026
Same author

Cyclin-dependent kinase 10 controls bone formation and is linked to human skeletal health.

Journal of orthopaedic translation·2026
Same author

Enhancing statistical analysis of real world data.

Database : the journal of biological databases and curation·2025
Same author

Differential splice isoforms of mouse CDK2 play functionally redundant roles during mitotic and meiotic division.

Journal of cell science·2025
Same author

Speedy A governs non-homologous XY chromosome desynapsis as a unique prerequisite for XY loop-axis organization.

The EMBO journal·2025

Related Experiment Video

Updated: Dec 22, 2025

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay
12:26

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay

Published on: May 3, 2018

19.2K

Less-well known functions of cyclin/CDK complexes.

Nathan Palmer1, Philipp Kaldis2

  • 1Institute of Molecular and Cell Biology (IMCB), A⁎STAR (Agency for Science, Technology and Research), 61 Biopolis Drive, Proteos, Singapore, 138673, Republic of Singapore; National University of Singapore (NUS), Department of Biochemistry, Singapore, 117597, Republic of Singapore.

Seminars in Cell & Developmental Biology
|May 11, 2020
PubMed
Summary

Cyclin-dependent kinases (CDKs) are best known for their role in cell division, but they also have important functions in DNA damage response. This study explores how CDK/cyclin complexes act as both targets of DNA damage signals and effectors of DNA repair. The authors also consider the possibility that cyclins can function independently of CDKs in these processes. These findings suggest that cyclins have a broader role in maintaining genome stability than previously recognized. The study highlights the need for more research into cyclin functions in DNA damage and cancer.

Keywords:
CheckpointCyclin-Dependent kinase (CDK)CyclinsDNA damageDNA repairDouble-Strand breaksCyclin/CDK complexDNA damage responseCell cycle regulationGenome stability

Frequently Asked Questions

More Related Videos

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors
10:33

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

Published on: October 26, 2015

11.7K
Experimental Approaches to Study Mitochondrial Localization and Function of a Nuclear Cell Cycle Kinase, Cdk1
13:15

Experimental Approaches to Study Mitochondrial Localization and Function of a Nuclear Cell Cycle Kinase, Cdk1

Published on: February 25, 2016

12.3K

Related Experiment Videos

Last Updated: Dec 22, 2025

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay
12:26

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay

Published on: May 3, 2018

19.2K
Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors
10:33

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

Published on: October 26, 2015

11.7K
Experimental Approaches to Study Mitochondrial Localization and Function of a Nuclear Cell Cycle Kinase, Cdk1
13:15

Experimental Approaches to Study Mitochondrial Localization and Function of a Nuclear Cell Cycle Kinase, Cdk1

Published on: February 25, 2016

12.3K

Area of Science:

  • Cell cycle regulation in molecular biology
  • DNA damage response mechanisms in cancer biology

Background:

Cyclin-dependent kinases (CDKs) are primarily recognized for their role in cell cycle progression. However, their functions extend beyond mitotic regulation. Cyclins, which activate CDKs, influence substrate specificity and resistance to inhibition. While much is known about CDK/cyclin complexes in cell division, their roles in DNA damage response remain underexplored. Prior research has established their involvement in checkpoint signaling and DNA repair. Yet, the dual nature of these complexes as both targets and effectors of DNA damage remains unclear. Additionally, cyclins may function independently of CDKs in these processes. This uncertainty motivates a deeper investigation into cyclin/CDK roles in DNA damage. Understanding these functions could improve insights into how cell cycle proteins contribute to genome stability.

Purpose Of The Study:

This study aims to examine the less-studied roles of CDK/cyclin complexes in DNA damage response. The authors focus on how these complexes act as both targets of checkpoint signaling and effectors of DNA repair. They also explore cyclin functions that do not require CDK activity. The goal is to highlight these underappreciated roles in the broader context of DNA damage. By analyzing cyclin/CDK interactions, the study seeks to clarify their contribution to genome stability. The authors emphasize the need to understand cyclins as independent regulators. This approach may reveal new aspects of cyclin function in cellular stress responses. The findings could contribute to a more comprehensive view of cell cycle regulation in DNA repair.

Main Methods:

The study reviews existing literature on CDK/cyclin complexes and their roles in DNA damage. It synthesizes findings from prior research on cyclin/CDK interactions. The authors examine how these complexes are regulated by DNA damage signals. They also assess the evidence for cyclin activity independent of CDKs. The analysis includes a focus on cyclin roles in DNA repair pathways. The study evaluates how cyclin/CDK complexes influence genome stability. It considers the implications of these findings for human diseases like cancer. The synthesis of evidence aims to clarify the dual roles of these complexes in DNA damage response.

Main Results:

CDK/cyclin complexes serve as both targets and effectors in DNA damage response. Cyclins influence the activity of these complexes in DNA repair pathways. Evidence suggests that cyclins can function independently of CDKs in these processes. The complexes are modulated by DNA damage checkpoint signaling. Their roles in DNA repair are distinct from their functions in cell cycle progression. The study highlights the dual nature of cyclin/CDK activity in DNA damage. These findings suggest a broader regulatory role for cyclins in genome stability. The results emphasize the need to study cyclin functions beyond CDK activation.

Conclusions:

The study concludes that CDK/cyclin complexes have important roles in DNA damage response. These complexes act as both targets and effectors of DNA damage signaling. The authors propose that cyclins may function independently of CDKs in these processes. This dual functionality suggests a more complex regulatory network than previously understood. The findings support the idea that cyclins contribute to genome stability. The study highlights the need for further research into cyclin/CDK roles in DNA repair. These results may inform future studies on DNA damage and cancer. The authors suggest that cyclin functions in DNA damage response deserve more attention.

CDK/cyclin complexes act as both targets of DNA damage checkpoint signaling and effectors of DNA repair.

Yes, the study suggests cyclins may function independently of CDKs in DNA repair processes.

Cyclins are traditionally studied in the context of CDK activation, which has led to limited focus on their independent roles.

These complexes modulate DNA repair pathways and are regulated by DNA damage checkpoint signaling.

Dysfunction in these complexes may contribute to genome instability, a hallmark of cancer.

The authors propose that cyclin functions in DNA damage response require further investigation.