I. Amino Acids A. Alkylamino Acids: :-Alkylamino acids, L-proline, L-valine. B. Hydroxyamino Acids: L-Serine, L-threonine, D-allothreonine, L-isoserine. C. Amino-amino Acids: L-2,3-Diaminopropionic acid, L-2,4-diaminobutyric acid. D. Carboxyamino Acids: L-Aspartic acid, 3-amino-pentanedioic acids. E. Thioamino Acids: D-Penicillamine, DOr L-methylcysteine, L-cysteine, L-methionine. F. Amido-amin...

The emergence of biochemical homochirality was a key step in the origin of life, yet prebiotic mechanisms for chiral separation are not well constrained. Here we demonstrate a geochemically plausible scenario for chiral separation of amino acids by adsorption on mineral surfaces. Crystals of the common rock-forming mineral calcite (CaCO(3)), when immersed in a racemic aspartic acid solution, di...

In this study, we developed a urine metabonomic method, based on gas chromatography-mass spectrometry (GC-MS), to evaluate the effect of ketamine on rats. Pattern recognition analysis, including both principal component analysis and partial least squares discriminate analysis revealed that ketamine (50 mg/kg) induced metabolic perturbations. Compared with the control group, at day 7, the level ...

The observation that Leuconostoc dextranicum 8086 requires either aspartic acid or threonine for growth resulted in studies in which a ri%e’ of aspartic acid in the biosynthesis of threonine was demonstrated in certain lactobacilli (1). In the present investigation, the nature of the requirement for either aspartic acid or threonine for growth of L. dextranicum 8086 has been found to be the res...

The aim of the present study is to quantify the amount of aspartic acid in Coccinia indica crude drug, lab extract and commercial extract by HPTLC method. The stationary phase was precoated aluminium silica gel G F 254 Plates. The mobile phase for aspartic acid was n-Butanol: Glacial acetic Acid: Water (50: 10: 40). The methanolic solution of standard aspartic acid (1 mg/ ml concentration) 5 μl...

one of the major classes of ionotropic glutamate receptors is the class of n-methyl-d-aspartate receptors (nmdars). receptor activation recruits, via calcium signal transduction mechanisms which play important roles in oxidative metabolism, mitochondrial free radical production and occurrence of other mitochondrial factors which potentially contribute to excitotoxicity and neuronal death. in...