Thermodynamic data for binary Q6·peptide complexes.

Host	protein	K a (M−1)	ΔH (kcal mol−1)	−TΔS (kcal mol−1)
Q6a	H-Leu-Ala-NH2	6.5 × 102	−2.9	1.0
Q6a	H-Leu-Phe-NH2	4.0 × 102	−2.7	−0.9
Q6a	H-Phe-Leu-NH2	5.0 × 101	−1.4	−0.7
Q6a	H-Lys-Ala-NH2	1.6 × 104	−2.8	−2.9

^a0.1 M NaCl, 298 K.⁶⁷