Standard Article

You have free access to this content

Amino Acid Biosynthesis

  1. Giacomo Deferrari,
  2. Irene Mannucci,
  3. Giacomo Garibotto

Published Online: 15 SEP 2010

DOI: 10.1002/9780470015902.a0000628.pub2

eLS

eLS

How to Cite

Deferrari, G., Mannucci, I. and Garibotto, G. 2010. Amino Acid Biosynthesis. eLS. .

Author Information

  1. University of Genoa, Genoa, Italy

Publication History

  1. Published Online: 15 SEP 2010
Table 1. Amino acids in human nutrition
Essential (indispensable)Conditionally indispensableNonessential (dispensable)
ValineCysteineGlutamic acid
IsoleucineGlutamineAlanine
LeucineTyrosineSerine
MethionineArginineAspartic acid
PhenylalanineGlycineAsparagine
ThreonineTaurine 
TryptophanProline 
Histidine  
Lysine  
Table 2. Summary of representative and approximate plasma amino acid turnover rates in healthy adults
Amino acidFlux (mmol kg−1 h−1)
  1. Source: From Bier 1989.

Indispensable (essential)
Leucine80–120
Lysine80–100
Valine60–85
Threonine50–70
Isoleucine60–80
Phenylalanine30–50
Methionine20–25
Conditionally indispensable
Glutamine250–350
Arginine60–70
Proline60–80
Tyrosine35–45
Cysteine40–50
Dispensable (nonessential)
Glutamate60–100
Glycine200–250
Alanine250–350