Glutaminase (GLS) Assay Kit                                                                                                                                                                           Price

Product Description: Glutaminase (glutamine aminohydrolase or GLS) catalyzes the following reaction: Glutamine + H2O → Glutamate + NH3.  
The enzyme has tissue-specific roles in multiple organs. Two different mammalian phosphate-activated GLS isoforms are known: GLS1 (kidney-
type) and GLS2 (liver-type; a target of the tumor suppressor protein p53). The hydrolytic activity of glutaminase generates ammonia for urea
synthesis in the liver similar to that mediated by glutamate dehydrogenase. During renal acidosis, glutaminase is induced in the kidney, leading to
increased excretion of ammonia, which plays an important role in maintaining acid-base homeostasis. Glutaminase regulates the levels of the
neurotransmitter glutamate in the brain. The rate of glutaminolysis is known to increase in tumors and may be a hot spot for regulation of cancer
cell metabolism. Inhibitors of GLS may therefore be candidate drugs for cancer therapy. The GLS assay is based on sequential GLS-mediated
hydrolytic reaction and glutamate dehydrogenase reaction, which couples the reduction of INT to INT-formazan (molar extinction coefficient = 18
/mM-cm at 492 nm), allowing for sensitive detection of GLS enzyme activity in plasma and cell/tissue samples. Assay solution is stable for several
years if stored and handled properly.

Kit Components:

Glutaminase Buffer: 10 ml, store at 4°C
Glutamine: 0.3 g, store at RT
TA Assay Solution: 10 ml, store at -80°C
10x Cell Lysis Solution: 25 ml, store at 4ºC

MSDS: TX-100, DMSO, INT, acetic acid, Hepes

Related kits: AST Assay, HK Enzyme Assay, GAPDH Enzyme Assay, LDH Enzyme Assay, GLDH Assay, G6PD Enzyme Assay

Wang et al
Sirtuin5 contributes to colorectal carcinogenesis by enhancing glutaminolysis in a deglutarylation dependent manner
Nature Communications 9, 545, 2018
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Mice were fed methionine-choline
deficient diet (MCD) for 6 weeks.
Heart tissues were homogenized
and GLS enzyme activities were
assayed by the GLS Assay kit.