Calcium/calmodulin-dependent protein kinase I is expressed in many tissues and is a component of a calmodulin-dependent protein kinase cascade. Calcium/calmodulin directly activates calcium/calmodulin-dependent protein kinase I by binding to the enzyme and indirectly promotes the phosphorylation and synergistic activation of the enzyme by calcium/calmodulin-dependent protein kinase I kinase. [provided by RefSeq, Jul 2008],CAMKI,B Cell Receptor Signaling Pathway,Calcium Signaling,Cardiovascular,ErbB-HER Signaling Pathway,Heart,Heart_Hypertrophy,Immunology & Inflammation,Neuroscience,Signal Transduction,CAMK1