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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
Z-DEVD-AMC 是一种经典的Caspase-3/7底物,用于在体外或细胞裂解体系中检测其酶活性。该分子由四肽序列DEVD(Caspase-3/7的特异识别序列)和荧光团AMC(7-氨基-4-甲基香豆素)组成。正常情况下,AMC被DEVD序列封闭,不发光;当Caspase-3或-7被激活后,会识别并切割DEVD与AMC之间的键,释放出自由的AMC分子,从而发出可被检测的蓝色荧光(Ex/Em ≈ 350/450 nm)。
Z-DEVD-AMC常用于比色板荧光酶活检测、药物诱导凋亡的研究、高通量药筛系统中等,尤其适合进行Caspase活性曲线分析和时间依赖性实验。其优点包括反应速度快、信号强、背景低,但由于激发波长较短(UV区),推荐使用具备紫外激发通道的荧光酶标仪或荧光分光光度计。此外,也可用于裂解细胞后进行荧光定量检测,不适用于活细胞直接成像。操作时注意避免强光照射,以减少AMC的自发光衰减。
Z-DEVD-AMC is a classic Caspase-3/7 substrate, used to detect the enzymatic activity of Caspase-3/7 in vitro or in cell lysis systems. This molecule consists of a tetrapeptide sequence DEVD (a specific recognition sequence for Caspase-3/7) and a fluorophore AMC (7-amino-4-methylcoumarin). Under normal circumstances, AMC is blocked by the DEVD sequence and does not emit light; when Caspase-3 or -7 is activated, it will recognize and cleave the bond between DEVD and AMC, releasing free AMC molecules, which then emit detectable blue fluorescence (Ex/Em ≈ 350/450 nm).
Z-DEVD-AMC is often used in microplate fluorescent enzyme activity assays, studies on drug-induced apoptosis, high-throughput drug screening systems, etc., and is particularly suitable for Caspase activity curve analysis and time-dependent experiments. Its advantages include fast reaction speed, strong signal, and low background. However, due to its relatively short excitation wavelength (in the UV region), it is recommended to use a fluorescence microplate reader or fluorescence spectrophotometer equipped with an ultraviolet excitation channel. In addition, it can also be used for fluorescent quantitative detection after cell lysis, but is not suitable for direct imaging of living cells. During operation, attention should be paid to avoiding strong light exposure to reduce the self-luminescence attenuation of AMC.
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | Z658857 | |
| 分析证书 | Z658857 |