Glutamate synthase properties

NICOTINAMIDE COENZYMES (SREC-TRAL PROPERTIES) NADH-dependent enzymes, AQUACOBALAMIN REDUCTASES BENZENE 1,2-DIOXYGENASE DEHYDROASCORBATE REDUCTASE GLUTAMATE SYNTHASE GLYOXYLATE REDUCTASE 3-HYDROXYBENZOATE 6-MONOOXY-GENASE... 

Suzuki, A. Gadal, P. (1984). Glutamate synthase physicochemical and functional properties of different forms in higher plants and in other organisms. Physiologia Vegetale 22, 471-86. 

Wang, R. and Nicholas, D.J.D. (1985) Some properties of glutamine synthetase and glutamate synthase from Derxia gummosa. Phytochemistry, 24,1133-40. 

Suzuki, A., and Knaff, D. (2005). Glutamate synthase Structural, mechanistic and regulatory properties, and role in the amino acid metabolism. Photosyn. Res. 83, 191—217. 

The affinity of an enzyme for its substrate(s) is an important property for any enzyme. Since the affinity is closely related to the it is usually considered that any enzyme must have a low for a substrate likely to be present only in small concentrations if the reaction is to occur at a reasonable rate. In this regard the much lower of GS for ammonia compared to that of GDH for the same substrate has often been cited as evidence compatible with the glutamate synthase cycle. Whilst this is true it should also be remembered that there are other factors which can override such a conclusion—the measured may be wrong (cf. ribulose bisphosphate car-... 

Ertan H. Some properties of glutamate dehydrogenase, utamine synthase and glutamate synthase from Corynebacterium callunae. Arch Microbiol 1992 158 35-41. 

Mutant lines of A. thaliana (Somerville and Ogren, 1983) and barley (Walls-grove et al, 1986) have been isolated and shown to have properties very similar to that of a mutant lacking glutamate synthase. By a detailed analysis of the chloroplast envelope, the specific protein missing in the 2-oxoglutarate uptake mutant of A. thaliana has been identified (Somerville and Somerville, 1985). 

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