TABLE 2.
In vitro activities of purified enzymes
Enzyme
|
RNAse
refoldinga,b
|
Insulin
reductiona
|
Citrate synthase inactivation
|
|
---|---|---|---|---|
CSt½c | μd | |||
μm/min/μm Enz | ×10-3ΔA650 nm/min2 | min | min-1 | |
— | — | — | 0.94 ± 0.01 | 0.51 ± 0.01 |
DsbC | 0.067 ± 0.012 | 5.81 ± 0.21 | 3.15 ± 0.05 | 0.22 ± 0.02 |
FkpA-DsbA2 | 0.012 ± 0.001 | 0.45 ± 0.11 | 2.46 ± 0.04 | 0.17 ± 0.06 |
FkpA-DsbA3 | 0.013 ± 0.001 | 0.43 ± 0.13 | 2.01 ± 0.05 | 0.36 ± 0.06 |
FkpA-DsbA4 | 0.014 ± 0.003 | 0.55 ± 0.12 | 3.82 ± 0.06 | 0.45 ± 0.22 |
FkpA-DsbA5 | 0.01 ± 0.001 | 0.38 ± 0.16 | 2.71 ± 0.07 | 0.26 ± 0.09 |
Data are expressed as mean ± S.D. (n = 3-6).
The activities were determined from a plot of isomerization velocity against enzyme concentrations.
t½, inactivation half-time.
μ, inactivation rate.