EC Number |
kcat/KM Value [1/mMs-1] |
kcat/KM Value Maximum [1/mMs-1] |
Substrate |
Reference |
---|
4.3.1.B2 | 0.016 |
- |
N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate |
pH 8.0, 30°C, cosubstrate: L-glutamine, mutant enzyme Q397A |
726941 |
4.3.1.B2 | 0.024 |
- |
L-glutamine |
pH 8.0, 30°C, IGP synthase enzyme with a R5H mutant subunit HisF |
727736 |
4.3.1.B2 | 0.03 |
- |
NH4+ |
pH 8.0, 30°C, IGP synthase holoenzyme |
726928 |
4.3.1.B2 | 0.032 |
- |
NH4+ |
pH 8.0, 30°C, HisF subunit |
726928 |
4.3.1.B2 | 0.039 |
- |
N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate |
pH 7.0, 30°C, cosubstrate: NH4+, mutant enzyme K258A |
726939 |
4.3.1.B2 | 0.084 |
- |
L-glutamine |
pH 7.0, 30°C, cosubstrate: N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate, mutant enzyme K258R |
726939 |
4.3.1.B2 | 0.12 |
- |
N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate |
pH 7.0, 30°C, cosubstrate: NH4+, mutant enzyme K258R |
726939 |
4.3.1.B2 | 0.21 |
- |
L-glutamine |
pH 8.0, 30°C, mutant enzyme Q397A |
726941 |
4.3.1.B2 | 0.247 |
- |
L-glutamine |
pH 7.0, 30°C, cosubstrate: N1-[(5'-phosphoribulosyl)formimino]-5-aminoimidazole-4-carboxamido-1-beta-D-ribofuranosyl 5'-phosphate, mutant enzyme K360A |
726939 |
4.3.1.B2 | 0.392 |
- |
NH4+ |
pH 8.0, 30°C, IGP synthase enzyme with a E46G mutant subunit HisF |
727736 |