TABLE 3.

Induction of enzyme activities involved in anaerobic ethylbenzene oxidation in Azoarcus sp. strain EB1

Growth substratea	Activityb (nmol min−1 [mg of protein]−1) (%) of
	Ethylbenzene dehydrogenase	1-Phenylethanol dehydrogenase
Ethylbenzene	7 (100)	12 (100)
1-Phenylethanol	6 (85)	89 (740)
Acetophenone	5 (71)	47 (390)
Benzoate	<DLc	<DL

^aAzoarcus sp. strain EB1 was grown under denitrifying conditions with the growth substrates indicated as the sole carbon and electron source. 

^bActivities were measured in vitro. 

^cDL, detection limit.