Template:Proteinogenic amino acids

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General topics

By properties

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