TABLE 3.

Activity of a zupT-lacZ reporter gene fusion in a ΔfurC background complemented in trans under various conditions^a

Condition	Activity of fusion in AE104 strain:
	Wild type	ΔfurC	ΔfurCb	ΔfurCc	ΔfurCd	ΔfurCe
MM	20 ± 3	251 ± 30	229 ± 14	220 ± 37	11 ± 1	24 ± 5
200 μM Zn2+	13 ± 1	150 ± 7	140 ± 18	120 ± 35	8 ± 2	11 ± 3
500 μM Zn2+	11 ± 2	134 ± 22	111 ± 20	111 ± 27	7 ± 3	12 ± 2
200 μM EDTA	65 ± 10	259 ± 21	256 ± 20	261 ± 25	59 ± 15	94 ± 6
500 μM EDTA	78 ± 8	257 ± 20	243 ± 38	269 ± 29	61 ± 16	98 ± 7

^aThree experiments were performed, and deviations are shown.

^bWith plasmid pBBR1.

^cWith plasmid pBBR::furC with an N-terminal FurC tag.

^dWith plasmid pBBR::furC with a C-terminal FurC tag.

^eWith plasmid pBBR::furC.