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Nonessential Amino Acids

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Nonessential amino acids are amino acids made by the body from essential amino acids or normal breakdown of proteins. [1] Of the 20 standard amino acids, 12 are nonessential. [2] These are: alanine, asparagine, aspartate, cysteine, glutamate, glutamine, glycine, proline, serine, tyrosine, arginine, and histidine. The amino acids cysteine, tyrosine, histidine and arginine are considered semiessential amino acids in children, because the metabolic pathways that synthesize these amino acids are not fully developed yet.

References Edit

  1. http://www.peptideguide.com/amino-acids/index.html
  2. Gastelu, Dan; Hatfield, Frederick C (2006). Specialist in Performance Nutrition: The Complete Guide. Carpenteria, CA: ISSA, 17. 
Amino Acids
Amino Acids AlanineArginineAsparagineAspartateCysteineGlutamateGlutamineGlycineHistidineIsoleucineLeucineLysineMethioninePhenylalanineProlineSerineThreonineTryptophanTyrosineValine
Essential Amino Acids IsoleucineLeucineLysineMethioninePhenylalanineThreonineTryptophanValine
Nonessential Amino Acids AlanineArginineAsparagineAspartateCysteineGlutamateGlutamineGlycineHistidineProlineSerineTyrosine
BCAAs IsoleucineLeucineValine
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