Rhythms in glutamine synthetase activity, energy charge, and glutamine in sunflower roots.

Glutamine synthetase regulation by energy charge in sunflower roots.

Energy charge [(ATP) + (1/2) (ADP)]/[(ATP) + (ADP) + (AMP)] and glutamine synthetase activity (transferase reaction) of roots increase in a near congruent manner when decotyledonized sunflower plants (Helianthus annuus L. var. Mammoth Russian) are grown in nitrate for 9 days. Replacement of nitrate with ammonium for the final 2 days leads to a higher energy charge and increased enzyme activity....

Biochemical and molecular analysis of glutamine synthetase gene in brassica napus L.

The effect of Glutamine on conductivity and energetic properties in Graphene: A DFT studies

Using the Computational methods, the interaction effect  of Glutamine Amino acid on Graphene was investigated. For this purpose, the Density Functional Theory) DFT (in the ground state of 6-31G was used, and the interaction effects of Glutamine on Graphene was investigated through attachment to two different base positions. Different parameters such as energy levels, the amount of Chemical Shif...

Glutamine Synthetase in Rice: A COMPARATIVE STUDY OF THE ENZYMES FROM ROOTS AND LEAVES.

Chromatographic, kinetic, and regulatory properties of glutamine synthetase in rice were investigated. By DEAE-Sephacel column chromatography, two forms (glutamine synthetase 1 and glutamine synthetase 2) were identified in leaves and one form (glutamine synthetase R) was identified in roots. Purification on hydroxyapatite and gel electrophoresis showed that glutamine synthetase R was distinct ...

Influence of ammonium and nitrate nutrition on the pyridine and adenine nucleotides of soybean and sunflower.

Total pyridine nucleotide concentration of root tissue for young soybean (Glycine max var. Bansei) and sunflower (Helianthus annuus L. var. Mammoth Russian) plants is the same with either ammonium or nitrate, but nitrate results in an increased proportion of total oxidized plus reduced NADP (NADP[H]) seemingly at the expense of NAD. The activity of NADH- and NADPH-dependent forms of glutamic ac...