# Amino Acid Properties

    ILVCAGMFYWHKREQDNSTPBZX-
    XXXXXXXXXXX·······X···XX Hydrophobic
    ········XXXXXXXXXX·XXXXX Polar
    ··XXXX·········XXXXX··XX Small
    ···················X··XX Proline
    ····XX···········X····XX Tiny
    XXX···················XX Aliphatic
    ·······XXXX···········XX Aromatic
    ··········XXX·········XX Positive
    ·············X·X······XX Negative
    ··········XXXX·X······XX Charged

From Livingstone, C. D. and Barton, G. J. (1993),
"Protein Sequence Alignments: A Strategy for the Hierarchical Analysis of Residue Conservation", Comp. Appl. Bio. Sci., 9, 745-756.