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Ac-LEHD-AMC是一种小分子荧光底物,广泛应用于Caspase 9活性检测。该底物包含一个特定的肽序列(LEHD),是Caspase 9的靶向底物,能够在Caspase 9的催化下被切割并释放出AMC(7-氨基-4-甲基香豆素),产生蓝色荧光。Ac-LEHD-AMC的最大吸收波长通常为360 nm,发射波长为450 nm,因此在荧光检测中非常适用。该化合物通常以白色固体或粉末形式存在,易溶于DMSO和水。
Ac-LEHD-AMC是通过将Caspase 9底物肽(LEHD)与荧光团AMC连接制成的底物。Caspase 9是半胱天冬酶家族中的一员,参与细胞凋亡的内源性途径,尤其是在死亡受体途径和线粒体途径中起着重要作用。LEHD是Caspase 9的特异性识别序列,能够被Caspase 9切割。AMC荧光团的释放使得该底物成为荧光检测Caspase 9活性的理想工具。
Ac-LEHD-AMC的结构特征包括:
LEHD序列:特异性识别并被Caspase 9切割。
AMC荧光团:在酶切割后释放出AMC分子,产生荧光信号。
Ac基团:通过乙酰基保护底物的N端,使其在细胞内更稳定。
应用
Ac-LEHD-AMC广泛用于以下领域:
Caspase 9活性检测:作为Caspase 9的特异性底物,Ac-LEHD-AMC可用于研究Caspase 9在细胞凋亡过程中的作用。
细胞凋亡研究:该底物可用于观察不同药物或处理对细胞凋亡的影响,尤其是在**癌药物筛选中。
分子标记与筛选:在分子生物学研究中,Ac-LEHD-AMC可用于筛选抑制Caspase 9的化合物,探究其生物学功能。
未来发展
Ac-LEHD-AMC的未来发展可能涉及以下几个方面:
增强荧光特性:通过改进AMC荧光团的结构,提高其荧光强度和稳定性,扩展其应用范围。
多底物选择性:发展更多特异性针对不同Caspase家族成员的底物,以便进行多重检测。
临床应用:随着Caspase 9在疾病中的重要作用,Ac-LEHD-AMC有潜力在临床诊断中作为检测细胞凋亡的工具。
Ac-LEHD-AMC is a small-molecule fluorescent substrate widely used in the detection of Caspase 9 activity. This substrate contains a specific peptide sequence (LEHD), which is a targeted substrate for Caspase 9. It can be cleaved under the catalysis of Caspase 9 to release AMC (7-amino-4-methylcoumarin), producing blue fluorescence. The maximum absorption wavelength of Ac-LEHD-AMC is usually 360 nm, and the emission wavelength is 450 nm, making it very suitable for fluorescence detection. The compound usually exists in the form of a white solid or powder, and is easily soluble in DMSO and water.
Ac-LEHD-AMC is a substrate made by linking the Caspase 9 substrate peptide (LEHD) to the fluorophore AMC. Caspase 9 is a member of the cysteine-aspartic protease family and is involved in the endogenous pathway of cell apoptosis, especially playing an important role in the death receptor pathway and mitochondrial pathway. LEHD is a specific recognition sequence for Caspase 9 and can be cleaved by Caspase 9. The release of the AMC fluorophore makes this substrate an ideal tool for fluorescent detection of Caspase 9 activity.
Structural features of Ac-LEHD-AMC include:
LEHD sequence: specifically recognizes and is cleaved by Caspase 9.
AMC fluorophore: releases AMC molecules after enzymatic cleavage, generating a fluorescent signal.
Ac group: protects the N-terminus of the substrate through an acetyl group, making it more stable in cells.
Applications
Ac-LEHD-AMC is widely used in the following fields:
Caspase 9 activity detection: as a specific substrate for Caspase 9, Ac-LEHD-AMC can be used to study the role of Caspase 9 in the process of cell apoptosis.
Apoptosis research: this substrate can be used to observe the impact of different drugs or treatments on cell apoptosis, especially in cancer drug screening.
Molecular labeling and screening: in molecular biology research, Ac-LEHD-AMC can be used to screen compounds that inhibit Caspase 9 and explore their biological functions.
Future development
The future development of Ac-LEHD-AMC may involve the following aspects:
Enhancing fluorescent properties: improving the fluorescence intensity and stability of the AMC fluorophore by modifying its structure to expand its application range.
Multi-substrate selectivity: developing more substrates specifically targeting different members of the Caspase family to enable multiplex detection.
Clinical applications: with the important role of Caspase 9 in diseases, Ac-LEHD-AMC has the potential to be used as a tool for detecting cell apoptosis in clinical diagnosis.
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | A1456348 | |
| 分析证书 | A1456348 | |
| 分析证书 | A1456348 |