. 2009 Mar 27;284(13):8322–8328. doi: 10.1074/jbc.M808977200

TABLE 1.

Bioluminescence-supporting flavin oxidoreductases

Name^a	FRase-1	Frp	Fre
Source	V. fischeri	V. harveyi	E. coli
MW (kDa)	25	26	26
Flavin cofactor	FMN	FMN	None
NAD(P)H specificity	NADH	NADPH	Either
SCOP fold^b	3 layer α/β/α	3 layer α/β/α	Greek key

Data taken from Ref. 15.

SCOP (Structural Classification of Proteins) from Ref. 51. Note the different fold assumed by the oxidoreductase from E. coli and those from the bioluminescent bacteria.