Single-step method for β-galactosidase assays in Escherichia coli using a 96-well microplate reader.

Single-step method for β-galactosidase assays in Escherichia coli using a 96-well microplate reader.
复制标题

DOI:
10.1016/j.ab.2016.03.017
复制
发表时间:
2016-06-15
影响因子:
2.9
通讯作者:
Buck M
Buck M
中科院分区:
生物学4区
文献类型:
--
作者:
Schaefer J;Jovanovic G;Kotta-Loizou I;Buck M

文献摘要

被引文献

相似文献

历史上,lacZ基因是分子生物学中最普遍使用的基因表达报告基因之一。其活性可使用人工底物邻硝基苯基-β-d-吡喃半乳糖苷(ONPG)定量。然而,用于测量LacZ活性的传统方法(首先由J. H.米勒在1972年)对于大量的样品可能是具有挑战性的,易于变化,并且涉及用于裂解的有害化合物(例如,氯仿、甲苯)。在这里,我们描述了一个单步测定使用96孔酶标仪与一个经过验证的替代细胞透化方法。这一修改后的协议减少了90%的处理时间。
Historically, the lacZ gene is one of the most universally used reporters of gene expression in molecular biology. Its activity can be quantified using an artificial substrate, o-nitrophenyl-ß-d-galactopyranoside (ONPG). However, the traditional method for measuring LacZ activity (first described by J. H. Miller in 1972) can be challenging for a large number of samples, is prone to variability, and involves hazardous compounds for lysis (e.g., chloroform, toluene). Here we describe a single-step assay using a 96-well microplate reader with a proven alternative cell permeabilization method. This modified protocol reduces handling time by 90%.