TABLE 1
Kinetics of 4-OH TOR sulfation
K
m
V
max
V
max
/
K
m
a
μ
M
nmol
·
min
−
1
·
mg protein
−
1
SULT1A1
2.6 ± 0.4
8.5 ± 0.3
3.3 ± 0.5
SULT1E1
6.4 ± 0.09
5.5 ± 0.2
0.9 ± 0.04
Human liver cytosol
3.5 ± 0.05
1.4 ± 1.03
0.4 ± 0.3
↵
a
Data are mean ± S.D. of triplicate measurements.