Braunstein and Kritzmann (1) have reported that with pigeon breast muscle any a-amino acid, with the possible exception of glycine, is active in transamination with either a-ketoglutaric or oxaloacetic acid. On the other hand, the author (2) found that transamination in pigeon breast muscle is limited to the following reactions. a (1) Z(+)-Glutamic acid + oxaloacetic acid e a-ketoglutaric acid ...

Pathways of ammonia assimilation into glutamic acid and alanine in Bacillus polymyxa were investigated by "N NMR spectroscopy in combination with measurements of the specific activities of glutamate dehydrogenase, glutamine synthetase, glutamate synthase, alanine dehydrogenase, and glutamic-alanine transaminase. Ammonia was found to be assimilated into glutamic acid predominantly by NADPH-depen...

During ail examination of microbial culture filtrates capable of reversing the inhibition of Streptomyces aureofaciens Strain NRRL B-1286 caused by the metliionine analogue norleucine, one filtrate was found to possess striking reversing potency. Analysis showed this could not be due to methionine. The reversal properties of the filtrate were traced to glutamic acid which imparted high reversin...

Certain Gram-positive bacteria have the ability to concentrate certain amino-acids in the free state within the cell (Gale, 1947; Taylor, 1947). Aminoacids may pass across the cell wall either by a process of diffusion, as in the case of lysine which becomes concentrated within the cell by a form of Donnan effect (Najjar & Gale, 1950), or as a result of an active transfer which requires energy ...

Wilson and Cannan studied the interconversion of glutamic acid and pyrrolidonecarboxylic acid in detail by means of changes in amino nitrogen (l), and the system so characterized was utilized by Olcott for the development of a method for the determination of glutamic acid (2). In neither case, however, were temperatures above 125” studied. We have found that glutamic acid can be converted much ...

The amino acid business is a multi-billion dollar enterprise. All twenty amino acids are sold, albeit each in greatly different quantities (Table 1). Amino acids are used as animal feed additives (lysine, methionine, threonine), flavor enhancers (monosodium glutamic, serine, aspartic acid) and as specialty nutrients in the medical field. Glutamic acid, lysine and methionine account for the majo...

The aim of the present research is to investigate the profile of amino acid of Chlorella vulgaris supplemented with some plant amino acid and oil extracts. The bioactive oil and amino acid from four Iranian medicinal plants, namely Oliveria decumbens, Thymus kotschyanus, Trachyspermum ammi, and Zataria multiflora were obtained. The LC-MS / MS analysis demonstrated that the major amino acids com...

Two charged polypeptides of opposite charge, poly(glutamic acid) (negative charge) and polylysine (positive charge), were end-labeled with Alexa fluorescent dyes, and their translational diffusion coefficient (D) values in dilute solutions ( 10 4 mg mL ) were studied at the biological pH with fluorescence correlation spectroscopy as a function of the ionic strength (Cs) mediated by the addition...