Template:Proteinogenic amino acids

General topics

By properties

Aliphatic	Branched-chain amino acids (Valine Isoleucine Leucine) Methionine Alanine Proline Glycine
Aromatic	Histidine Tyrosine Tryptophan Phenylalanine
Polar, uncharged	Asparagine Glutamine Serine Threonine
Positive charge (pK_a)	Lysine (≈10.8) Arginine (≈12.5) Histidine (≈6.1) Pyrrolysine
Negative charge (pK_a)	Aspartic acid (≈3.9) Glutamic acid (≈4.1) Selenocysteine (≈5.4) Cysteine (≈8.3) Tyrosine (≈10.1)

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