FIGURE 5. Free energies for transfer of amino acids from water to octanol15.
From the following article:
Solving the membrane protein folding problem
James U. Bowie
Nature 438, 581-589 (1 December 2005)
doi:10.1038/nature04395

Charged residues are shown in green bars, polar residues in yellow bars and hydrophobic residues in purple bars.
