The Twenty Amino Acids

[Verse 1] (Nonpolar Group) Ah-la-nean Va-lean, and Iso-leu-seen, Tucked away, within unseen, Meth-iah-nean, and also Leu-seen, Phenyl-ala-nean and Tryptophan join the scene, Pro-lean loops, flexibility lean. [Verse 2] (Polar, Uncharged) Ser-een and Three-oh-nean, hydroxyl equipped, Sista-een forms disulfides, firmly clipped, Aspara-gene, Gluta-mean, amide tipped, Ty-rah-seen's aromatic, signal transduction whipped. [Verse 3] (Acidic Members) As-part-ic, Glue-tah-mik, lose protons, gain zest, At pH seven, they’re negatively dressed, In active sites, they’re often guests, Catalyzing reactions on their quest. [Verse 4] (Basic Forces) Hist-ah-dean near neutral, a proton seer, Lie-seen, Arg-ah-nean, charge clear, Stabilize pH, interact with the near, In binding sites, they adhere. [Verse 4] (Basic Forces) Hist-ah-dean near neutral, a proton seer, Lie-seen, Arg-ah-nean, charge clear, Stabilize pH, interact with what's near, In binding sites, they adhere. [Outro] Amino acids, small but grand, Craft life's fabric, strand by strand. In every cell, they take their stand.