Related Concept Videos
01:45Positive Regulator Molecules
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
01:23Negative Regulator Molecules
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.
02:39Positive Regulator Molecules
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.
02:34Inhibition of Cdk Activity
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...
02:15M-Cdk Drives Transition Into Mitosis
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...
02:34Inhibition of CDK Activity
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...
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Related Experiment Video
Updated: Jul 19, 2026
10:05
In Vitro Analysis of PDZ-dependent CFTR Macromolecular Signaling Complexes
Published on: August 13, 2012
Multiple roles for Cdc42 in cell regulation.
1Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, USA. JWE6@cornell.edu
Current Opinion in Cell Biology
|March 15, 2001
Summary
The Rho family member Cdc42 regulates cell growth, differentiation, and apoptosis through various pathways. New research reveals previously unknown connections between Cdc42
Area of Science:
- Cell Biology
- Molecular Signaling
Background:
- Cdc42, a Rho family GTPase, is a key regulator of fundamental cellular processes.
- Its signaling pathways influence cell growth, differentiation, and apoptosis.
- Known targets include actin regulators like WASP and stress pathway kinases like PAK.
Purpose of the Study:
- To review recent advancements in understanding Cdc42 signaling.
- To highlight newly identified Cdc42 targets, including coatomer proteins and PAR6.
- To explore the emerging links between diverse Cdc42-mediated cellular processes.
Main Methods:
- Literature review of recent findings on Cdc42 signaling.
- Analysis of studies identifying novel Cdc42 interacting partners.
- Synthesis of data linking actin cytoskeleton, stress, and other pathways.
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Published on: May 3, 2018
Main Results:
- Cdc42 signaling impacts actin cytoskeleton organization via targets like WASP.
- Cdc42 is involved in cellular stress responses through pathways like PAK.
- Novel targets, including coatomer complex and PAR6, expand the known Cdc42 interactome.
- Evidence suggests interconnectedness between these distinct cellular functions.
Conclusions:
- Cdc42 integrates signals from diverse pathways, influencing fundamental cellular behaviors.
- The identification of new targets like PAR6 and coatomer proteins reveals a broader regulatory network.
- Recent findings underscore a previously unappreciated link between actin dynamics, stress responses, and other cellular processes regulated by Cdc42.