Table 2.

Effect of gadXY on btuB promoter

Plasmid	β-galactosidase activity a	% inhibition b
(A): pGAD10 + pC-lacZ	0
(B): pGadXY + pC-lacZ	0
(A): pGAD10 + pCB461lacZ	6.4 ± 0.2	45.7
(B): pGadXY + pCB461lacZ	3.5 ± 0.2
(A): pGAD10 + pCB673lacZ	7.2 ± 0.1	47.1
(B): pGadXY + pCB673lacZ	3.8 ± 0.1
(A): pGAD10 + pCB913lacZ	4.8 ± 0.2	54.5
(B): pGadXY + pCB913lacZ	2.2 ± 0.5
(A): pGAD10 + pCB1285lacZ	37.5 ± 0.7	56.7
(B): pGadXY + pCB1285lacZ	16.2 ± 0.5

^aMiller unit.

^bCaculated according to the following equation: 1- [β-galactosidase activity of (B) ÷ β-galactosidase activity of (A)] × 100%.