TABLE 2.

Electron acceptor specificities of NfrA and NfsA^a

Electron acceptor	Reductase activity (μmol/min/mg of protein)
	NfrA	NfsA
FMN	16	1
Nitrofurazone	20	73
Nitrofurantoin	15	82
Ferricyanide	97	251
DTNB	0.12	NDb

^aData from reference 42.

^bND, not determined.