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Regulation of type-II calmodulin kinase: functional implications
J M Bronstein1, D B Farber, C G Wasterlain
1Department of Neurology, UCLA School of Medicine 90024.
Brain Research. Brain Research Reviews
|January 1, 1993
Summary
Calmodulin-kinase II (CaM kinase) regulates calcium
Area of Science:
- Neuroscience
- Molecular Biology
- Biochemistry
Background:
- Calmodulin-kinase II (CaM kinase) is a crucial calcium/calmodulin-dependent protein kinase.
- It is highly concentrated in the nervous system, mediating key calcium actions.
- CaM kinase regulation is vital for synaptic transmission, plasticity, and neuropathology.
Purpose of the Study:
- To elucidate the regulatory mechanisms of CaM kinase activity.
- To understand CaM kinase's role in synaptic plasticity and neurological disorders.
Main Methods:
- Analysis of intracellular calcium concentrations.
- Investigation of CaM kinase autophosphorylation.
- Study of CaM kinase intracellular translocation.
- Examination of CaM kinase gene expression modulation.
Main Results:
- Increased intracellular calcium stimulates CaM kinase activity and autophosphorylation.
- Autophosphorylation alters CaM kinase activity and calcium responsiveness.
- Autophosphorylation induces CaM kinase intracellular translocation.
- Gene expression changes in CaM kinase are observed in epilepsy and visual system plasticity models.
Conclusions:
- CaM kinase activity is primarily regulated by intracellular calcium levels.
- Autophosphorylation and translocation are key mechanisms influencing CaM kinase function.
- Modulation of CaM kinase gene expression represents another significant regulatory pathway.