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Kinetic Parameters for Isoxanthopterin and Pterin-6-carboxylate Deamination with Sgx9339a and Sgx9236b.
| enzyme | substrate | kcat (s−1) | Km (mM) | kcat/Km (M−1 s−1) |
|---|---|---|---|---|
| Sgx9339a | isoxanthopterin | 1.05 ± 0.03 | 0.008 ± 0.001 | (1.3 ± 0.2) × 105 |
| pterin-6-carboxylate | 1.01 ± 0.10 | 0.14 ± 0.02 | (7.2 ± 0.2) × 103 | |
| Sgx9236b | isoxanthopterin | 0.91 ± 0.06 | 0.05 ± 0.01 | (1.8 ± 0.2) × 104 |
| pterin-6-carboxylate | 0.28 ± 0.05 | 0.09 ± 0.03 | (3.1 ± 0.4) × 103 |
