Protein Variants | Comment | Organism |
---|---|---|
Kbeta135A | site-directed mutagenesis, the mutant shows 42% reduced activity compared to the wild-type enzyme, the mutant is less sensitive to inhibitor CN-cobalamin | Klebsiella oxytoca |
Kbeta135E | site-directed mutagenesis, the mutant shows 98% reduced activity compared to the wild-type enzyme | Klebsiella oxytoca |
Kbeta135Q | site-directed mutagenesis, the mutant shows 27% reduced activity compared to the wild-type enzyme, the mutant is less sensitive to inhibitor CN-cobalamin | Klebsiella oxytoca |
Kbeta135R | site-directed mutagenesis, the mutant shows 24% reduced activity compared to the wild-type enzyme | Klebsiella oxytoca |
Salpha224A | site-directed mutagenesis, the mutant shows 81% reduced activity compared to the wild-type enzyme, mechanism-based complete inactivation of the Salpha224A holoenzyme during catalysis by propan-1,2-diol leading to accumulation of cobalamin, mechanism, overview | Klebsiella oxytoca |
Salpha224N | site-directed mutagenesis, the mutant shows 95% reduced activity compared to the wild-type enzyme | Klebsiella oxytoca |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
CN-cobalamin | - |
Klebsiella oxytoca | |
Propane-1,2-diol | leads to inactivation of wild-type and mutant enzymes during catalysis, kinetics, overview | Klebsiella oxytoca |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.12 | - |
Propan-1,2-diol | pH 8.0, 37°C, mutant Kbeta135R | Klebsiella oxytoca | |
0.15 | - |
Propan-1,2-diol | pH 8.0, 37°C, wild-type enzyme and mutant Salpha224A | Klebsiella oxytoca | |
0.39 | - |
Propan-1,2-diol | pH 8.0, 37°C, mutant Kbeta135A and mutant Kbeta135Q | Klebsiella oxytoca | |
0.4 | - |
Propan-1,2-diol | pH 8.0, 37°C, mutant Kbeta135E | Klebsiella oxytoca | |
1.9 | - |
Propan-1,2-diol | pH 8.0, 37°C, mutant Salpha224N | Klebsiella oxytoca |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Co2+ | in the cobalamin cofactor, presence of a positive charge at the beta135 residue increases the affinity for cobalamins but is not essential for catalysis, and the introduction of a negative charge there prevents the enzyme-cobalamin interaction | Klebsiella oxytoca |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
propane-1,2-diol | Klebsiella oxytoca | - |
propanal + H2O | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Klebsiella oxytoca | - |
- |
- |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
propane-1,2-diol | - |
Klebsiella oxytoca | propanal + H2O | - |
? | |
propane-1,2-diol | Co-C bond formation during reaction | Klebsiella oxytoca | propanal + H2O | - |
? |
Synonyms | Comment | Organism |
---|---|---|
diol dehydratase | - |
Klebsiella oxytoca |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
assay at | Klebsiella oxytoca |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
7.7 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Kbeta135E | Klebsiella oxytoca | |
17 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Salpha224A | Klebsiella oxytoca | |
64 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Kbeta135R | Klebsiella oxytoca | |
196 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Kbeta135A | Klebsiella oxytoca | |
211 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Kbeta135Q | Klebsiella oxytoca | |
254 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Salpha224N | Klebsiella oxytoca | |
336 | - |
CN-cobalamin | pH 8.0, 37°C, wild-type enzyme | Klebsiella oxytoca |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
8 | - |
assay at | Klebsiella oxytoca |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
Cobalamin | roles of adenine anchoring and ion pairing at the coenzyme B12-binding site, overview. Presence of a positive charge at the beta135 residue increases the affinity for cobalamins but is not essential for catalysis, and the introduction of a negative charge there prevents the enzyme-cobalamin interaction | Klebsiella oxytoca |
Ki Value [mM] | Ki Value maximum [mM] | Inhibitor | Comment | Organism | Structure |
---|---|---|---|---|---|
0.00014 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Kbeta135A | Klebsiella oxytoca | |
0.00051 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Kbeta135R | Klebsiella oxytoca | |
0.00063 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Salpha224A | Klebsiella oxytoca | |
0.0015 | - |
CN-cobalamin | pH 8.0, 37°C, wild-type enzyme | Klebsiella oxytoca | |
0.0023 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Salpha224N | Klebsiella oxytoca | |
0.0044 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Kbeta135Q | Klebsiella oxytoca | |
0.463 | - |
CN-cobalamin | pH 8.0, 37°C, mutant Kbeta135E | Klebsiella oxytoca |