Table 1. Rates of bovine heart cytochrome c reduction under various conditions at 37 °C, pH 7.5.
[Lys]a (mM) |
[R5P]a (mM) |
[Cyto-chrome c]a (μM) |
Additivea (mM) |
Preincubation of Amine and R5P? | Cytochrome c Reduction Rate (μM min-1) |
O2- Generation Rateb (μM min-1) |
---|---|---|---|---|---|---|
0 | 10 | 82 | None | --- | 0.42 | 0.20 |
100 | 10 | 82 | None | None | 1.8 | 1.10 |
100 | 10 | 82 | None | 0.5 h | 3.0 | 0.85 |
0 | 10 | 82 | Catalase (94 U/mL) | None | 0.60 | |
0 | 0 | 82 | 2,3-BD (10) | None | 0 | 0 |
100 | 0 | 82 | 2,3-BD (10) | None | 1.2 | --- |
100 | 0 | 82 | 2,3-BD (10) | 0.5 h | 2.4 | 0.9 |
100 | 0 | 82 | 2,3-BD (10) | 0.5 h | 2.4 | --- |
ATP (10) | ||||||
0 | 10 | 82 | ATP (10) | None | 0.22 | --- |
100 | 10 | 82 | w/o ATP | 0.5 h | 2.5 | --- |
with ATP (10) | 0.5 h | 2.5 | 2.5 | |||
0 | 10 | 82c | None | None | 0.52 | --- |
0 | 10 | 82c | ATP (10) | None | 0.24 | --- |
Concentrations of reagents listed are those when incubated with cytochrome c.
O2- generation rate was determined by the percent decrease in cytochrome c reduction rate upon addition of SOD (76 U/mL) to the system.
Yeast cytochrome c (from Sigma–Aldrich Chemical Co.)