Table 1.

IC₅₀ for melibiose displacement of bound D²G^a (mM)

Permease	RSO membrane vesicles	Detergent solubilization
		DDM	UDM	MNG-3	GDN
MelBEc	0.66 ± 0.16b	NDc	ND	1.20 ± 0.35	1.82 ± 0.18
MelBSt	2.42 ± 0.22	5.65 ± 1.75	4.79 ± 0.71	4.22 ± 0.82	3.19 ± 0.41
R295C MelBSt	4.04 ± 0.42d	/e	/	5.49 ± 0.83	/

^aMelibiose concentration for the half-maximal displacement of bound D²G (IC₅₀) in the presence of 20 mM NaCl.

^bSEM, (n = 2).

^cNo detectable signal.

^dData from reference #12;

^eNo measurement.