Template:Proteinogenic amino acids

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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)