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Updated: Jun 29, 2025

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Pull-down of Calmodulin-binding Proteins
Published on: January 23, 2012
25.4K
Neurogranin modulates the Rate of Association between Calmodulin and Target Peptides
Biorxiv : the Preprint Server for Biology
|April 2, 2024
Summary
Calmodulin (CaM) binding to targets can be N-domain driven. Neurogranin, a CaM regulator, significantly slows CaM target activation by inhibiting preferred complex formation, impacting Ca 2+ signaling dynamics.
Area of Science:
- Molecular and Cellular Biology
- Biochemistry
- Neuroscience
Background:
- Calmodulin (CaM) is a crucial calcium-binding protein regulating numerous cellular processes.
- CaM's primary function involves calcium-dependent binding to target proteins.
- Low-affinity CaM-binding proteins, like PEP-19 and neurogranin (Ng), are present at basal calcium levels and may modulate CaM signaling.
Conclusions:
- CaM target binding can be initiated by its N-domain.
- Low-affinity CaM regulators like neurogranin can modulate the temporal dynamics of CaM signaling.
- These findings provide mechanistic insights into how limited calmodulin availability influences target activation during calcium oscillations.
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