TABLE 1.

Cry1Ab kinetic parameters and equilibrium dissociation constants from Cry1Ab-susceptible and -resistant European corn borer, Ostrinia nubilalis, strains using real-time analysis (Biacore 2000)^a

Strain	kon (M−1 s−1) (103)	koff (s−1) (10−4)	Kd (nM)
Europe-S	10.7 ± 0.3 a	3.7 ± 0.4 a	35 ± 3 a
Europe-R	9.7 ± 0.3 b	5.9 ± 0.5 a	61 ± 6 b
RSTT-R	10.03 ± 0.04 b	9.5 ± 1.1 b	94 ± 11 c

^aValues are means ± standard deviations from three replicates (three batches of SUV). Means in a column that are followed by the same letter were not statistically different (least significance difference test, P < 0.05).