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Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
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Calcium, calmodulin and cell cycle regulation

A R Means1

  • 1Department of Pharmacology, Duke University Medical Center, Durham, NC 27710.

FEBS Letters
|June 20, 1994
PubMed
Summary
This summary is machine-generated.

Calcium and calmodulin are essential for cell cycle progression. Key enzymes and proteins in the calcium/calmodulin pathway regulate cell division, highlighting the importance of intracellular calcium levels for cell proliferation.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Calcium ions and calmodulin are crucial for cell proliferation.
  • The calcium/calmodulin cascade plays a role in cell cycle regulation.

Purpose of the Study:

  • To identify components of the calcium/calmodulin cascade essential for cell cycle progression.
  • To understand the role of specific calcium/calmodulin-dependent enzymes in cell division.

Main Methods:

  • Studies in various model systems were used to investigate the calcium/calmodulin pathway.
  • Analysis of calcium/calmodulin-dependent protein kinase, calcineurin, and spindle pole body protein function.

Main Results:

  • Specific components of the calcium/calmodulin cascade are required for cell cycle transitions (G1 to S, G2 to M, mitosis).
  • Calcium/calmodulin-dependent protein kinase, calcineurin, and a calmodulin-binding spindle pole body protein are essential at distinct cell cycle phases.
  • Intracellular calcium pool status is critical for normal cell cycle progression.

Conclusions:

  • The calcium/calmodulin pathway is a critical regulator of cell proliferation and cell cycle progression.
  • Targeting specific enzymes within this pathway could offer therapeutic strategies for cell cycle-related disorders.