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Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. [1] Although over 500 amino acids exist in nature, by far the most important are the 22 α-amino acids incorporated into proteins. [2] Only these 22 appear in the genetic code of life. [3] [4]
Amino acids are listed by type: Proteinogenic amino acid; Non-proteinogenic amino acids This page was last edited on 5 January 2020, at 17:16 (UTC). Text is ...
During translation, amino acids are joined into a linear chain by condensation reactions which create peptide bonds between the carboxyl group of one amino acid and the amino group of an adjacent amino acid. The first and last amino acids in the chain are said to be N-terminal and C-terminal, respectively, in reference to the unbonded amino ...
Phenylalanine ball and stick model spinning. Phenylalanine (symbol Phe or F) [3] is an essential α-amino acid with the formula C 9 H 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.
Protein sequence is typically notated as a string of letters, listing the amino acids starting at the amino-terminal end through to the carboxyl-terminal end. Either a three letter code or single letter code can be used to represent the 22 naturally encoded amino acids, as well as mixtures or ambiguous amino acids (similar to nucleic acid ...
Amino acid 6-17 × 10 −6: 1.3-3.6 × 10 −5: Arsenic: normal range 2-62 × 10 −9: chronic poisoning 100-500 × 10 −9: acute poisoning 600-9300 × 10 −9: Ascorbic acid (Vitamin C) Important vitamin 1-15 × 10 −6: 6-20 × 10 −6: Aspartic acid: Amino acid 0-3 × 10 −6: In WBCs 2.5-4.0 × 10 −4: 9-12 × 10 −6: Bicarbonate: Buffer ...
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Arginine is an essential amino acid for birds, as they do not have a urea cycle. [19] For some carnivores, for example cats, dogs [ 20 ] and ferrets, arginine is essential, [ 3 ] because after a meal, their highly efficient protein catabolism produces large quantities of ammonia which need to be processed through the urea cycle, and if not ...