TABLE 4.
Aldehyde activities of the three ALDHs with different aldehydes as the substrate
| Enzyme | Activity (%)a
|
||
|---|---|---|---|
| Propionaldehyde | dl-Glyceraldehyde | Benzaldehyde | |
| ALDH1 | 100 | 12 | 0.9 |
| ALDH5 | 100 | 33 | 2.4 |
| ALDH2 | 100 | 68 | 36 |
The activity of each ALDH with propionaldehyde as the substrate (Table 3) was assigned as 100%. The activities obtained with dl-glyceraldehyde and benzaldehyde were compared to that assayed with propionaldehyde for each ALDH. The assays were performed at Vmax conditions.