Table 3.
Enzyme version | Kinetic parameters | ||||
---|---|---|---|---|---|
Aminating direction | Deaminating direction | ||||
K M Fru6P [mM] | KM NH4Cl [mM] | V max [μM/min/mg] | K M GlcN6P [mM] | V max [μM/min/mg] | |
GlmNagBa | 2.5 ± 0.24 | 19.0 ± 1.90 | 86.3 ± 3.20 | 0.38 ± 0.16 | 32.8 ± 5.30 |
GlmNagB | 2.8 ± 0.14 | 23 ± 1.20 | 100 ± 5.20 | 0.55 ± 0.05 | 38.1 ± 1.70 |
GlmNagB-HisN | 1.71 ± 0.11 | 14.0 ± 0.80 | 128.0 ± 11.00 | 0.95 ± 0.15 | 45.2 ± 7.70 |
GlmNagB-HisC | 3.52 ± 0.15 | 41.6 ± 3.30 | 2.0 ± 0.16 | 5.21 ± 0.40 | 1.21 ± 0.11 |
aReference data (Steimle et al. 1997)