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Standard amino acids

Easy list – alphabetically

9 essential amino acids are marked with an asterisk

• Alanine
• Arginine
• Asparagine
• Aspartic acid
• Cysteine
• Glutamic acid
• Glutamine
• Glycine
• Histidine*
• Isoleucine*
• Leucine*
• Lysine*
• Methionine*
• Phenylalanine*
• Proline
• Serine
• Threonine*
• Tryptophan*
• Tyrosine
• Valine*

1-letter and 3-letter amino acid codes

List format: amino acid name: one letter code / three letter code

Alanine: A / Ala
Arginine: R / Arg
Asparagine: N / Asn
Aspartic acid: D / Asp
Cysteine: C / Cys
Glutamic acid: E / Glu
Glutamine: Q / Gln
Glycine: G / Gly
Histidine: H / His
Hydroxyproline: O / Hyp
Isoleucine: I / Ile
Leucine: L / Leu
Lysine: K / Lys
Methionine: M / Met
Phenylalanine: F / Phe
Proline: P / Pro
Pyroglutamatic: U / Glp
Serine: S / Ser
Threonine: T / Thr
Tryptophan: W / Trp
Tyrosine: Y / Tyr
Valine: V / Val

Functions and effects on human organs

• Alanine  muscle metabolism, energy production, blood sugar regulation, immune system support
• Arginine  immune function, wound healing, hormone secretion, blood vessel dilation, creatine synthesis, growth hormone release
• Asparagine  neurotransmitter synthesis, glycoprotein synthesis, detoxification, metabolic regulation, brain function
• Aspartic acid  neurotransmitter synthesis, energy production, immune function
  
• Cysteine  antioxidant activity, collagen synthesis, detoxification, enzyme function
• Glutamine  neurotransmitter synthesis, nitrogen transport, muscle growth, immune function, gut health
  
• Glutamic acid  neurotransmitter synthesis, energy production, brain development, cognitive function
  
• Glycine  collagen synthesis, neurotransmitter synthesis, DNA synthesis, metabolic processes, immune function, sleep regulation, central nervous system development
• Histidine  antioxidant, histamine production, immune function, red blood cell production, blood sugar regulation, stress response
• Isoleucine  muscle protein synthesis, energy production, blood sugar regulation
  
• Leucine  muscle protein synthesis, hormone regulation, wound healing
  
• Lysine  fat metabolism, collagen synthesis, hormone production, calcium absorption, immune function
  
• Methionine  protein synthesis, detoxification, antioxidant production, cartilage formation
  
• Phenylalanine  neurotransmitter synthesis, hormone production, pain relief, mental function
• Proline  collagen synthesis, joint health, wound healing, tendon repair, skin elasticity
• Serine  immune function, cell membrane structure, myelin sheath formation, cognitive function
  
• Threonine  immune function, collagen synthesis, protein synthesis, digestive enzyme activity
  
• Tryptophan  neurotransmitter synthesis, sleep regulation, mood stabilization, appetite control
• Tyrosine  neurotransmitter synthesis, hormone production, thyroid function, mood regulation
  
• Valine  muscle protein synthesis, energy production, immune function, tissue repair

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