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商品描述
Target | Calcium channel |
---|---|
Solubility | DMSO : 200 mg/mL Ethanol : 10 mg/mL (14.10 mM) |
Ionomycin is a Calcium ionophore and an antibiotic produced byStreptomyces conglobatusATCC 31005. It is observed that LCLC 103H cells overexpressing the catalytic subunit of μ-calpain rapidly underwent cell death after treatment with ionomycin. The first signs of Ionomycin-induced cell death are detected 3 h after addition of the ionophore. Addition of 2 μM Ionomycin to LCLC 103H cells causes an instantaneous increase in intracellular Ca2+concentration from 50 to 180 nM. Remarkably, calcium concentrations are raised transiently to 0.8-1.5 μM. DNA and protein analysis in Ionomycin-treated cultures revealed DNA fragmentation and PARP cleavage to an 85-kDa fragment typical of caspase-mediated apoptosis. Three hours after addition of ionomycin, the percentage of early apoptotic cells approximately doubles. Necrosis could be detected in ~1-5% of the Ionomycin treated cells as supported by simultaneously positive fluorescein labeling and propidium iodide uptake. Caspase activation in whole cells was followed by monitoring the increase in activity against Ac-DEVD-amc following Ionomycin treatment.
Gendepot的T4 DNA连接酶是最通用的DNA克隆连接酶。这种ATP依赖性酶将5'-磷酸与3'-羟基化的末端共价连接,这些末端是通过限制性酶消化或其他酶促过程产生的双链DNA片段的平末端或相容的内聚末端。T4 DNA连接酶对单链核酸无活性。连接反应后,可通过在65℃温育10分钟使T4 DNA连接酶失活。