Molecular Classification
Enzyme, Hydrolase, Transferase, Oxidoreductase
Other Names
Calcium-activated enzymes, Ca2+-dependent enzymes
Disease Roles
CancerNeurodegenerative diseaseCardiovascular disease

Calcium-Dependent Enzymes Overview

Calcium-dependent enzymes are a diverse group of enzymes that require calcium ions (Ca2+) for their activity. Calcium typically acts as an allosteric regulator, binding to the enzyme and inducing conformational changes that affect its catalytic activity. These enzymes play crucial roles in various cellular processes, including signal transduction, metabolism, proteolysis, and blood coagulation. Examples include nitric oxide synthase, protein phosphatases, adenylate kinase, calpains (calcium-dependent proteases), calcium-dependent acyltransferases, enzymes of the tricarboxylic acid cycle (e.g., α-ketoglutarate dehydrogenase, isocitrate dehydrogenase, pyruvate dehydrogenase), mitochondrial glycerol 3-phosphate dehydrogenase, and gamma-carboxylases. Calcium is also involved in the maturation and transport of certain pro-enzymes.

Mechanism of Action

N/A

Biological Functions

Catalysis
Signal transduction
Cellular regulation
Energy homeostasis
Proteolysis
Acyl transfer
Metabolic regulation
Blood coagulation

Disease Associations

Cancer
Neurodegenerative disease
Cardiovascular disease
Metabolic disorders

Safety Considerations

  • Potential for off-target effects due to broad calcium signaling involvement
  • Dysregulation can lead to various pathologies