Table 1.

HpNikR–DNA interactions determined by DNase I footprinting

	Apo		1:1 NiSO4
Gene	pH 7.6	pH 6.0	pH 7.6	pH 6.0
ureA*	N/D	Binding†	Binding	Binding
nikR*	N/D	N/D	N/D	Binding
amiE	N/D	Weak‡	N/D	Binding
amiF	N/D	Weak	N/D	Binding
nixA	N/D	Binding	Binding	Binding
ceuE	N/D	Binding	Binding§	Binding
frpB2	N/D	Binding	Binding§	Binding

See SI Appendix, Table S2 for the values measured. N/D, none detected.

^*Previously reported (25).

^†Nanomolar protein required for half-maximal DNA binding.

^‡More than 1 µM protein is required for half-maximal DNA binding.

^§Previously reported (14).