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Calcium-Binding Domain(s) of Calpain (N/A)

Target: N/A
Molecular classification: Protein Domain, Calcium-binding protein, Cysteine Protease (component)

Overview

The calcium-binding domains of calpain are crucial for regulating its activity as an intracellular cysteine protease. These domains, including the CysPc, CBSW/C2-like, and PEF-hand regions, bind calcium ions, triggering conformational changes that activate the enzyme. This activation allows calpain to perform limited proteolysis of target proteins, modulating their function and contributing to processes like cytoskeletal remodeling, cell signaling, and apoptosis. Calpain's activity is also regulated by its endogenous inhibitor, calpastatin, whose interaction is calcium-dependent.

Mechanism of action

N/A. This is a domain, not a drug.

Biological functions

Calcium bindingProtein-protein interactionRegulation of protease activityModulation of protein functionEnzyme activation

Disease associations

CancerNeurodegenerative diseaseCardiovascular diseaseOther (implicated in various cellular processes and diseases)

Safety considerations

Potential for off-target effects with calpain inhibitors due to the broad role of calpains in cellular processes.Dysregulation of calpain activity can lead to various pathologies.

Interacting drugs

Calpastatin (endogenous inhibitor)

1 more in the full profile.

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