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Arginine is the amino acid with the formula (H 2 N)(HN)CN(H)(CH 2) 3 CH(NH 2)CO 2 H. The molecule features a guanidino group appended to a standard amino acid framework. At physiological pH, the carboxylic acid is deprotonated (−CO 2 −) and both the amino and guanidino groups are protonated, resulting in a cation.
The following other wikis use this file: Usage on af.wikipedia.org Arginien; Usage on ar.wikipedia.org أرجنين; Usage on azb.wikipedia.org آرژینین
This diagram shows the biosynthesis (anabolism) of amino acids glutamate, glutamine, proline, and arginine from the precursor alpha-ketoglutarate. The regulation of proline biosynthesis can depend on the initial controlling step through negative feedback inhibition. [ 4 ]
Protein primary structure is the linear sequence of amino acids in a peptide or protein. [1] By convention, the primary structure of a protein is reported starting from the amino -terminal (N) end to the carboxyl -terminal (C) end.
Chemical structure of the arginine vasopressin (argipressin) with an arginine at the 8th amino acid position. Lysine vasopressin differs only in having a lysine in this position. Chemical structure of oxytocin. Differs from AVP at only the 3rd and 8th position. The vasopressins are peptides consisting of nine amino acids (nonapeptides).
In enzymology, an arginine—tRNA ligase (EC 6.1.1.19) is an enzyme that catalyzes the chemical reaction. ATP + L-arginine + tRNAArg AMP + diphosphate + L-arginyl-tRNAArg. The 3 substrates of this enzyme are ATP, L-arginine, and tRNA(Arg), whereas its 3 products are AMP, diphosphate, and L-arginyl-tRNA(Arg).
An example of an amino acid sequence plotted on a helical wheel. Aliphatic residues are shown as blue squares, polar or negatively charged residues as red diamonds, and positively charged residues as black octagons. A helical wheel is a type of plot or visual representation used to illustrate the properties of alpha helices in proteins.
Chemical formula: C 6 H 14 N 4 O 2 Molar mass: 174.2 g·mol −1 Systematic name: 2-amino-5-(diaminomethylidene amino)pentanoic acid Abbreviations: R, Arg Synonyms: 2-amino-5-guanidinopentanoic acid