. Author manuscript; available in PMC: 2006 Apr 21.

Published in final edited form as: Arch Biochem Biophys. 2006 Jan 1;445(1):115–123. doi: 10.1016/j.abb.2005.11.005

Table 3.

Specific activity of the recombinant hCE-1, hCE-2, and human microsomes for pNPA and various Xuorescent substrates

Substrate	hCE-1	hCE-2 (nmol/min/mg)	Microsomes
(αR)-A1	750 ± 70	3000 ± 300	65 ± 5
(αS)-A1	2500 ± 200	19,000 ± 100	220 ± 10
(αR)-A2	3300 ± 300	14,000 ± 900	100 ± 10
(αS)-A2	16,000 ± 800	38,000 ± 1000	330 ± 20
A3	9.5 ± 0.6	20 ± 0.3	0.24 ± 0.003
(2R)-A4	0.94 ± 0.03	55 ± 1	0.087 ± 0.008
(2S)-A4	ND^a	ND	ND
A5	0.51 ± 0.01	0.56 ± 0.04	0.093 ± 0.005
A6	6.5 ± 0.2	4.1 ± 0.1	0.10 ± 0.01
cis-A7	0.51 ± 0.01	0.48 ± 0.03	ND
trans-A7	0.65 ± 0.07	1.2 ± 0.02	ND
A8	4.7 ± 0.3	0.71 ± 0.04	0.033 ± 0.003
pNPA	18,000 ± 1000	43,000 ± 2000	1400 ± 100
pNPA ^b	10,000	60,000

ND, not detected.

Data are from Senter et al. [27].