Table 1B.
Comparison of in vitro kinetic constants for RALDHS using other aldehydes as substrates.
| Enzyme |
Substrate |
Km (μM) |
Vmax/Km |
References |
|---|---|---|---|---|
| Rat RALDH 1 |
Acetaldehyde | 41 | ------- | (Labrecque et al., 1993; Kathmann et al., 2000) |
| Benzaldehyde | 0.12 | ------- | ||
| Propanal |
5.5 |
------- |
|
|
| Rat RALDH 2 |
Acetaldehyde | 645 | 0.2 | (Wang et al., 1996) |
| Benzaldehyde | 305 | 0.7 | ||
| Propanal | 61 | 2.4 | ||
| Hexanal | 28 | 23 | ||
| Octanal | 5 | 152 | ||
| Decanal |
3 |
214 |
|
|
| Mouse RALDH 2 |
Acetaldehyde | 1400 | 0.46 | (Bordelon et al., 2004) |
| Hexanal | 5 | 164 | ||
| Octanal | 10 | 108 | ||
| Decanal |
1 |
960 |
|
|
| Chick RALDH 3 | Acetaldehyde | 3200 | ------- | (Grun et al., 2000) |
| Benzaldehyde | 4.3 | 5.3 | ||
| Octanal | 0.24 | 679 |