TABLE 1.

Comparison of enzymatic activities of type II hydride transferases^a

Enzyme	Avg Km (μM TNT) ± SE	Avg Km (μM NADPH) ± SE	Avg Vmax (μM/min·mg protein) ± SE
XenB	48 ± 3	13 ± 5	105 ± 2
PETN reductase	64 ± 4	117 ± 32	37 ± 0.5
NEM reductase	15 ± 3	27 ± 3	8 ± 0.5

^aEnzymatic parameters were assayed by monitoring consumed TNT. Data represent the results of at least three different experiments. The error is given as the standard error at 95% confidence.