Lactase/β-Galactosidase (β-GAL) Activity Assay Kit, 50T/24S

Enzyme Overview: β-Galactosidase (β-GAL), also commonly referred to as lactase in specific contexts, is a key glycoside hydrolase enzyme categorized under EC 3.2.1.23. Its core biological function is to catalyze the hydrolysis of terminal non-reducing β-D-galactose residues in β-D-galactosides, a reaction that breaks down substrates like lactose into glucose and galactose—two monosaccharides that serve as critical energy and carbon sources for organisms. Beyond hydrolysis, β-GAL also exhibits transglycosylation activity, enabling the synthesis of compounds like allolactose, which plays a regulatory role in microbial metabolic pathways (e.g., the lac operon system in E. coli).
Research Significance: In scientific research, β-GAL is one of the most widely used reporter enzymes, particularly in cell biology and molecular biology studies. It is often encoded by the lacZ gene of E. coli, making it a staple tool for investigating transcriptional activity of genes, analyzing protein-protein interactions, and normalizing transfection efficiency in eukaryotic cell experiments. Additionally, defects in β-GAL function in humans are associated with genetic disorders such as galactosialidosis and Morquio B syndrome, further driving the need for accurate activity detection in clinical research and diagnostic development (for research use only, not for clinical applications).
Assay Kit Purpose: The Lactase/β-Galactosidase (β-GAL) Activity Assay Kit is designed to address the critical need for reliable, quantitative measurement of β-GAL activity in various biological samples. This kit supports research across fields including molecular biology, microbiology, and metabolic science, enabling scientists to study enzyme kinetics, evaluate gene expression systems, and explore the role of β-GAL in biological processes—all while adhering to strict research-use-only guidelines.