The Periodic Table of Life

The 20 Amino Acids

The alphabet of every protein. Arranged by chemical family (columns) and side-chain size (down each column) — then recolor the whole board to watch a property sweep across it, or switch Arrange to Sorted to physically reorder and resize the residues by that property. Click any residue to open its full profile.

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Data from standard biochemistry references: Kyte–Doolittle hydropathy, standard isoelectric points & side-chain pK_a, the RNA codon table, and typical residue abundances. Structures drawn from SMILES via SmilesDrawer. Spot-check any value before relying on it for research.