Table 2

Amino Acid Residue	Distance^a	Hydrophobicity value^b
Dab	3.9 Å	-9.5
Orn	5.0 Å	-9.0
Lys	6.4 Å	-9.9
Arg	7.0 Å	-10.0

a. distance in angstroms from Cα carbon of the peptide backbone to the positively charged nitrogen atom(s)
b. combined consensus scale hydrophobicity for each charge residue

Table 2: Physical Data for the basic amino acid residues used in this study.