γ-Glutamyltransferase (GGT, EC 18.104.22.168) is a membrane-bound protein that catalyzes the transfer of γ-glutamyl moieties to acceptor molecules such as amino acids or peptides. GGT plays a key role in the γ-glutamyl cycle, a critical pathway for glutathione homeostasis as well as the detoxification of xenobiotics. Serum GGT levels can be elevated in many pathophysiological conditions such as cardiovascular disease, chronic liver disease, and metabolic syndrome. Elevated serum levels of GGT can also be indicative of oxidative stress.
γ-Glutamyltransferase (GGT) Activity Fluorometric Assay Kit has been used to analyze serum GGT activity.
Features and Benefits
Compatible with high-throughput handling systems.
Suitable for the measurement of gamma-glutamyl transferase (GGT) in a variety of samples including tissue, cells and serum
The GGT Activity Fluorometric Assay kit provides a simple and direct procedure for measuring GGT activity in a variety of samples. GGT activity is determined by a coupled enzyme assay, in which the GGT transfers the γ-glutamyl group from quenched substrate L-γ-Glutamyl-7-amido-4-methylcoumarin (L--Glutamyl-AMC), liberating the fluorescent group, 7-Amino-4-Methyl Coumarin (AMC) (λex = 365 nm/λem = 460 nm) proportional to the GGT activity present. One unit of GGT is the amount of enzyme that will generate 1.0 μmole of AMC per minute at 37 °C.