TABLE 3.

Dissociation constants (K_com) and concentrations of receptors (B_max) calculated from homologous ¹²⁵I-Cry1A toxin binding competition assays with BBMV from H. virescens strains YDK, CXC, and KCBhyb

Toxin	Result for straind
	YDK		CXC		KCBhyb
	Kcoma	Bmaxb	Kcom	Bmax	Kcom	Bmax
Cry1Aa	1.25 ± 0.51	1.20 ± 0.30	1.47 ± 0.71	0.90 ± 0.30	NAc	NA
Cry1Ab	2.26 ± 0.15	7.60 ± 0.40	3.97 ± 0.78	8.70 ± 1.60	2.31 ± 0.42	6.50 ± 1.10
Cry1Ac	0.15 ± 0.09	0.50 ± 0.10	0.26 ± 0.06	0.40 ± 0.10	0.04 ± 0.01	0.50 ± 0.10

^aExpressed in nanomolar units.

^bExpressed in picomoles per milligram of BBMV protein.

^cNA, not applicable.

^dExpressed as value ± standard error.