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Ionomycin常用于转运钙离子穿过各种生物膜。加入Ionomycin最常用于提高细胞内的钙离子水平。通过提高细胞内钙离子水平，Ionomycin可以诱导神经细胞发生细胞凋亡，可以诱导一些细胞产生cell cycle arrest，也可以产生多种由于细胞内钙离子水平升高而产生的其它生物功能。
    Ionomycin分子量为747.07，分子式为C₄₁H₇₀CaO₉，CAS Number：56092-82-1

Ionomycin, is a narrow spectrum antibiotic for Gram-positive bacteria, produced by Streptomyces conglobatus. In mammals cells ionomycin acts as a potent and selective Ca²⁺ionophore, more effective than A23187. The enhancement of Ca²⁺ influx by Ionomycin, caused by direct stimulation of store-regulated cation entry and not by a direct action at the plasma membrane.^1-4 Ionomycin induces hydrolysis of phosphoinositides, activation of PKC in human T cells and apoptosis in various cells lines.^5-7