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| ImageFile=Ionomycin (free acid).svg
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| IUPACName=(4R,6S,8S,10Z,12R,14R,16E,18R,19R,20S,21S)-19,21-dihydroxy-22-{(2S,2'R,5S,5'S)-5'-[(1R)-1-hydroxyethyl]-2,5'-dimethyloctahydro-2,2'-bifuran-5-yl}-4,6,8,12,14,18,20-heptamethyl-11-oxido-9-oxodocosa-10,16-dienoic acid
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离子霉素()是一种由细菌 Streptomyces conglobatus 产生的离子载体。它能用来提高细胞内的钙离子(Ca2+)水平,因而用于研究Ca2+ 的跨膜机制。
离子霉素也常与PMA联用来刺激细胞产生一些胞间产物,比如一些细胞因子,如干扰素、穿孔素、IL-2和IL-4。这些细胞因子在炎症反应中有重要作用。
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