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Related Concept Videos

Positive Regulator Molecules02:39

Positive Regulator Molecules

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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.
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Positive Regulator Molecules01:45

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To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
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M-Cdk Drives Transition Into Mitosis02:15

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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...
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Inhibition of Cdk Activity02:34

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

Marcos Malumbres

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    Cyclin-dependent kinases (CDKs) control cell division and transcription. This review explores their dual roles, evolutionary expansion, and therapeutic potential in diseases like cancer.

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    Area of Science:

    • Molecular Biology
    • Biochemistry
    • Cell Biology

    Background:

    • Cyclin-dependent kinases (CDKs) are essential protein kinases requiring cyclin partners for activity.
    • CDKs regulate fundamental cellular processes, including cell division and gene transcription.
    • The mammalian CDK family has expanded, diversifying into cell-cycle and transcriptional subfamilies.

    Purpose of the Study:

    • To review the multifaceted roles of CDKs, highlighting the overlap between cell-cycle and transcriptional functions.
    • To discuss the evolutionary trajectory of the CDK family and functional specialization.
    • To underscore the significance of CDK deregulation in diseases and the promise of targeted therapies.

    Main Methods:

    • Literature review and synthesis of existing research on CDK family members.
    • Analysis of evolutionary expansion and functional diversification of CDKs.
    • Examination of the link between CDK dysregulation and disease pathogenesis.

    Main Results:

    • CDKs exhibit a combination of cell-cycle and transcriptional regulatory activities, challenging traditional classifications.
    • Evolutionary expansion has led to specialized CDK-cyclin interactions and functions.
    • Aberrant CDK activity is implicated in various diseases, notably cancer.

    Conclusions:

    • CDK functions are more integrated than previously thought, spanning cell cycle and transcription.
    • Targeted inhibition of specific CDKs shows therapeutic promise for diseases driven by CDK dysregulation.
    • Further research into CDK biology is crucial for developing effective treatments.