Basic amino acids
(and its 3-letter and 1-letter abbr.)

Acidic amino acids
(and its 3-letter and 1-letter abbr.)

Uncharged polar amino acids
(and its 3-letter and 1-letter abbr.)

Non-polar amino acids
(and its 3-letter and 1-letter abbr.)

Lysine
(and its structure and special properties)