EC Number |
Turnover Number Minimum [1/s] |
Turnover Number Maximum [1/s] |
Substrate |
Reference |
---|
4.3.1.B2 | 5.7 |
- |
N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate |
pH 8.0, 30°C, HisF subunit |
726928 |
4.3.1.B2 | 8.5 |
- |
L-glutamine |
pH 8.0, 30°C, IGP synthase holoenzyme |
726928 |
4.3.1.B2 | 8.6 |
- |
NH3 |
pH 8.0, 30°C, HisF subunit |
726928 |
4.3.1.B2 | 8.6 |
- |
NH4+ |
pH 8.0, 30°C, HisF subunit |
726928 |
4.3.1.B2 | 8.8 |
- |
NH4+ |
pH 8.0, 30°C, IGP synthase holoenzyme |
726928 |
4.3.1.B2 | 9.1 |
- |
N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate |
pH 8.0, 30°C, IGP synthase holoenzyme |
726928 |
4.3.1.B2 | 0.025 |
- |
L-glutamine |
pH 7.0, 30°C, cosubstrate: N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate, mutant enzyme K258A |
726939 |
4.3.1.B2 | 0.045 |
- |
N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate |
pH 7.0, 30°C, cosubstrate: L-glutamine, mutant enzyme K258A |
726939 |
4.3.1.B2 | 0.126 |
- |
N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate |
pH 7.0, 30°C, cosubstrate: L-glutamine, mutant enzyme K258R |
726939 |
4.3.1.B2 | 0.15 |
- |
N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate |
pH 7.0, 30°C, cosubstrate: NH4+, mutant enzyme R239A |
726939 |