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Alanine is an aliphatic amino acid, because the side-chain connected to the α-carbon atom is a methyl group (-CH 3). Alanine is the simplest α-amino acid after glycine. The methyl side-chain of alanine is non-reactive and is therefore hardly ever directly involved in protein function. [12]
CAS: 338-69-2 (D), 56-41-7 (L) ... ^a EINECS for L-alanine ^a CID 602 from PubChem ^a CID 5950 from PubChem This page was last edited on 12 April 2023, at 11: ...
β-Alanine (beta-alanine) is a naturally occurring beta amino acid, which is an amino acid in which the amino group is attached to the β-carbon (i.e. the carbon two carbon atoms away from the carboxylate group) instead of the more usual α-carbon for alanine (α-alanine). The IUPAC name for β-alanine is 3-aminopropanoic acid.
11 NO 2. It can be viewed as a benzyl group substituted for the methyl group of alanine, or a phenyl group in place of a terminal hydrogen of alanine. This essential amino acid is classified as neutral, and nonpolar because of the inert and hydrophobic nature of the benzyl side chain. The L-isomer is used to biochemically form proteins coded ...
Use of inexpensive raw materials, e.g. instead of pure L-alanine the raw mixture of Strecker synthesis from methanal, hydrogen cyanide and ammonia; Avoidance of complex and yield-reducing isolation steps; instead, direct further use of the crude reaction solutions or precipitates in the following process step.
Alanine transaminase (ALT), also known as alanine aminotransferase (ALT or ALAT), formerly serum glutamate-pyruvate transaminase (GPT) or serum glutamic-pyruvic transaminase (SGPT), is a transaminase enzyme (EC 2.6.1.2) that was first characterized in the mid-1950s by Arthur Karmen and colleagues. [1]
Another problem identified was the need for another basic residue to return Lys39 and Tyr265 back to their protonated and unprotonated forms for L-alanine and vice versa for D-alanine. Watanabe et al. found no amino acid residues or water molecules, other than the carboxylate group of PLP-Ala, to be close enough (within 4.5A) to protonate or ...
Alanine dehydrogenase (EC 1.4.1.1) is an enzyme that catalyzes the chemical reaction. L-alanine + H 2 O + NAD + pyruvate + NH 3 + NADH + H +. The 2 substrates of this enzyme are L-alanine, water, and nicotinamide adenine dinucleotide + because water is 55M and does not change, whereas its 4 products are pyruvate, ammonia, NADH, and hydrogen ion.