L-Glutamic acid γ-monohydroxamate has been used as a standard to calculate transglutaminase (TGase) activity.[1]
Biochem/physiol Actions
L-Glutamic acid γ-monohydroxamate [L-Glu(gamma)HXM] is used as a vanadium ligand which potentiates vanadiums metabolic activity. L-Glu(gamma)HXM is also used as a substrate for E. coli asparagine synthetase B and as an ATP-dependent irreversible inhibitor of Escherichia coli gamma-glutamylcysteine synthetase.
The Journal of biological chemistry, 274(37), 26617-26624 (1999-09-03)
We report that the vanadium ligand L-Glu(gamma)HXM potentiates the capacity of free vanadium ions to activate glucose uptake and glucose metabolism in rat adipocytes in vitro (by 4-5-fold) and to lower blood glucose levels in hyperglycemic rats in vivo (by
We have previously shown that L-glutamic acid gamma-monohydroxamate (GAH) exhibits an antitumor activity, both in vitro and in vivo. In this report we explore the selective cytotoxicity of GAH in vitro by comparing the survival of tumor and normal cells.
The Journal of biological chemistry, 275(34), 26233-26240 (2000-08-22)
The x-ray crystal structure of the heterodimeric carbamoyl phosphate synthetase from Escherichia coli has identified an intermolecular tunnel that connects the glutamine binding site within the small amidotransferase subunit to the two phosphorylation sites within the large synthetase subunit. The
E. coli carbamyl phosphate synthetase binds 0.2-0.4 mol equivalents of glutamine in an acid resistant form. The bound material is quantitatively released as glutamate by weak base hydrolysis and as a mixture of 12% glutamate, 10% gamma-glutamylhydroxamate, and 70% pyrrollidonecarboxylic
Escherichia coli asparagine synthetase B (AS-B) catalyzes the synthesis of asparagine from aspartic acid and glutamine in an ATP-dependent reaction. The ability of this enzyme to employ hydroxylamine and L-glutamic acid gamma-monohydroxamate (LGH) as alternative substrates in place of ammonia
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