fall into three general categories;

• hydrophobic amino acids
• charged
• polar

Hydrophobic amino acids

• Alanine
• Valine
• Isoleucine
• Leucine
• Methionine
• Phenylalanine
• Tyrosine
• Tryptophan

Charged amino acids

• Positively Charged
  • Arginine
  • Histidine
  • Lysine
• Negatively Charged
  • Aspartic Acid
  • Glutamic Acid

Polar amino acids

• Serine
• Threonine
• Asparagine
• Glutamine

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