钙离子（Ｃａ２＋）是细胞内重要的信使，对维持细胞的各种代谢过程十分重要。细胞内游离的钙离子即可与受体蛋白或多种酶结合，触发生理生化效应，也可与钙调素（ＣａＭ）结合，通过钙调素依赖蛋白激酶和蛋白磷酸酶的活性调节细胞内蛋白磷酸化水平，广泛参与细胞的一系列功能 Calcium (Ca2 +) is an important intracellular messenger and is important for maintaining various cellular metabolic processes. Intracellular free calcium ions can bind to receptor protein or enzymes, trigger physiological and biochemical effects, but also with calmodulin (CaM), by regulating the activity of calmodulin-dependent protein kinase and protein phosphatase intracellular Protein phosphorylation level, widely involved in a series of cell functions