TABLE 3.

Binding affinity of empedopeptin to phospholipid model membranes

Association rate (k_a), dissociation rate (k_d), and overall binding affinity (k_D) of empedopeptin as determined by the quartz crystal microbalance technique either in the absence or presence of 1.25 mm CaCl₂.

	ka	kd	kD
	m−1s−1	s−1	μm
Without Ca2+	2835 ± 507	2.10 × 10−3 ± 0.86 × 10−3	0.77 ± 0.41
1.25 mm Ca2+	4736 ± 1262	1.47 × 10−3 ± 0.70 × 10−3	0.30 ± 0.11