TABLE 2.
Enzyme | Substrates | Sensitivity (IC50) (mM) to:
|
Km for PAP (μM) | Family | Source or reference | |
---|---|---|---|---|---|---|
Na+ | Li+ | |||||
HalA | PAP, PAPS | 600 | 3.6 | 1,035 | PAPase | This study |
Hal2p | PAP, PAPS | 20 | 0.1 | <20 | PAPase | 16 |
AtAHL | PAP, PAPS | 50 | 10 | 160 | PAPase | 9 |
Tol1 | PAP, PAPS, IBP | SMa | SMMb | >20 | PIPase | 15 |
Sal1 | PAP, PAPS, IBP | 200 | 0.2 | 2-10 | PIPase | 21 |
Sal2 | PAP, PAPS, IBP | 200 | 10 | >20 | PIPase | 9 |
SM, submolar concentration.
SMM, submillimolar concentration.