منابع مشابه
The Synthesis of Aspartic Acid
No one of the methods proposed for the synthesis of aspartic acid is entirely satisfactory as a practical procedure. The synthesis, described in a recent paper (1) from this laboratory, has been utilized in preparing 50 to 60 gm. lots of recrystallized aspartic acid but even here the beginning reagents are expensive, the over-all yield is only about 30 per cent of the theoretical, and the proce...
متن کاملBiotin and the Synthesis of Aspartic Acid by Microorganisms.
Considerable evidence is accumulating concerning the role of growth factors in the metabolism of amino acids by microorganisms. Koser, Wright, and Dorfman (1942) demonstrated a relationship between aspartic acid and biotin in that aspartic acid can serve as a partial substitute for biotin in the growth of Torula cremoris. Pantothenic acid influences the synthesis of tryptophane by Staphylococcu...
متن کاملcomparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
15 صفحه اولMetabolism of L-aspartic acid.
Aspartic acid, like glutamic acid, occupies a central position in amino acid metabolism. In most tissues it takes part in the transamination reaction (1). In the liver and the kidney, where all amino acids undergo cleamination, the rate of this process for aspartic acid is second only to glutamic acid (2). For these reasons, one would expect the exchange of amino nitrogen of aspartic acid with ...
متن کاملSynthesis and Spectroscopic Characterization of l-aspartic Acid Complexes with Metals of the Lanthanides Family
The complexes between l-aspartic acid and metals of lanthanide series (La 3+ , Pr 3+ , Eu 3+ , Gd 3+ ) have been prepared and characterized using a variety of techniques including, infrared spectroscopy, 1 H NMR, 13 C NMR, elemental analysis and metal contents. The sought metal effect on the electronic environment of the chiral carbon and its neighbouring atoms was observed in case of Europium ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1933
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)75895-x