Table I. The effect of ODD cofactors on the conversion of [¹⁴C]GA₄ to [¹⁴C]GA₇ by recombinant DES in vitro.

Final concentrations are as follows: 4 mm ascorbate, 4 mm 2-oxoglutarate, 5 mm FeSO₄, 2 mg mL⁻¹ bovine serum albumin, and 0.1 mg mL⁻¹ catalase.

Cofactor Composition	Conversion
	%
Full cofactor complement	100
No cofactors	0
2-Oxoglutarate	19
Ascorbate	0
FeSO4	0
Ascorbate, 2-oxoglutarate	100
2-Oxoglutarate, FeSO4	82
Ascorbate, 2-oxoglutarate, FeSO4	100