Essential amino acid | Wikipedia audio article
Channel: wikipedia tts
Date: 10/12/2018

This is an audio version of the Wikipedia Article:
Essential amino acid


00:01:00 1 Essentiality in humans
00:01:29 2 Recommended daily intake
00:02:22 2.1 Relative amino acid composition of protein sources
00:03:48 2.2 Protein per calorie
00:05:10 3 Complete proteins in non-human animals
00:06:05 4 Interchangeability
00:06:55 5 Effects of deficiency
00:09:10 6 See also



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SUMMARY
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An essential amino acid, or indispensable amino acid, is an amino acid that cannot be synthesized de novo (from scratch) by the organism, and thus must be supplied in its diet. The nine amino acids humans cannot synthesize are phenylalanine, valine, threonine, tryptophan, methionine, leucine, isoleucine, lysine, and histidine. Recently, it's been found that histadine can be made in the body if the other eight esential amino acids are supplied. Six other amino acids are considered conditionally essential in the human diet, meaning their synthesis can be limited under special pathophysiological conditions, such as prematurity in the infant or individuals in severe catabolic distress. These six are arginine, cysteine, glycine, glutamine, proline, and tyrosine. Five amino acids are dispensable in humans, meaning they can be synthesized in sufficient quantities in the body. These five are alanine, aspartic acid, asparagine, glutamic acid and serine.