Calcium/calmodulin-dependent protein kinase (CaMK)

Calcium/calmodulin-dependent protein kinase (CaMK) is an enzyme that plays a crucial role in how cells respond to calcium signals. When calcium levels inside a cell rise, calcium binds to a partner protein called calmodulin. This complex then activates CaMK, which can modify other proteins by adding phosphate groups. This process influences various cellular functions, including learning, memory, and muscle contraction. Essentially, CaMK acts as a molecular switch that helps cells adapt to changes in calcium levels, coordinating activities necessary for normal cellular operations and responses.