Table 1.

Equilibrium dissociation constants (nanomolar) for interactions between wildtype and mutant Cry1Ab protoxins and activated toxins with recombinant CR12, ALP, and APN

NB, no binding.

Type of Cry1Ab	CR12		ALP		APN
	Protoxin	Toxin	Protoxin	Toxin	Protoxin	Toxin
WT	85 ± 14	35 ± 4	28 ± 2	296 ± 3	79 ± 8	296 ± 5
RR368–9AA	NB	NB	22 ± 3	381 ± 36	55 ± 6	572 ± 53
F371A	NB	NB	16 ± 2	242 ± 48	40 ± 5	214 ± 8
G439D	NB	NB	14 ± 2	806 ± 88	30 ± 4	870 ± 32