Activating Compound | Comment | Organism | Structure |
---|---|---|---|
additional information | conjugation of poly-L-lysine to cytosine deaminase improves the efficacy of enzyme/prodrug cancer therapy, e.g. by a 50times higher cellular uptake than that of control molecules in human breast MDA-MB-231 cancer cells and increase stability after uptake into cells, uptake and intracellular distribution, mechanisms, overview | Escherichia coli |
Application | Comment | Organism |
---|---|---|
medicine | the enzyme is useful in gene therapy of cancers, conjugation of poly-L-lysine to cytosine deaminase improves the efficacy of enzyme/prodrug cancer therapy, overview | Escherichia coli |
General Stability | Organism |
---|---|
conjugation of poly-L-lysine to cytosine deaminase increases the enzyme's stability after uptake into cells, mechanism, overview | Escherichia coli |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | the kinetics of the enzyme associated with poly-L-lysine derivatives are very similar to the wild-type enzyme kinetics, overview | Escherichia coli | |
0.19 | - |
cytosine | pH 7.5, 25°C, wild-type enzyme | Escherichia coli | |
3.9 | - |
5-fluorocytosine | pH 7.5, 25°C, wild-type enzyme | Escherichia coli |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
cytosine + H2O | Escherichia coli | - |
uracil + NH3 | - |
? | |
additional information | Escherichia coli | the enzyme is useful in gene therapy of cancers, conjugation of poly-L-lysine to cytosine deaminase improves the efficacy of enzyme/prodrug cancer therapy, e.g. by a 50times higher cellular uptake than that of control molecules in human breast MDA-MB-231 cancer cells and increase stability after uptake into cells, uptake and intracellular distribution, mechanisms, overview | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Escherichia coli | - |
- |
- |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
58 | - |
wild-type enzyme, substrate 5-fluorocytosine | Escherichia coli |
144 | - |
wild-type enzyme, substrate cytosine | Escherichia coli |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
5-fluorocytosine + H2O | - |
Escherichia coli | 5-fluorouracil + NH3 | - |
? | |
cytosine + H2O | - |
Escherichia coli | uracil + NH3 | - |
? | |
additional information | the enzyme is useful in gene therapy of cancers, conjugation of poly-L-lysine to cytosine deaminase improves the efficacy of enzyme/prodrug cancer therapy, e.g. by a 50times higher cellular uptake than that of control molecules in human breast MDA-MB-231 cancer cells and increase stability after uptake into cells, uptake and intracellular distribution, mechanisms, overview | Escherichia coli | ? | - |
? |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
25 | - |
assay at | Escherichia coli |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
71 | - |
5-fluorocytosine | pH 7.5, 25°C, wild-type enzyme | Escherichia coli | |
185 | - |
cytosine | pH 7.5, 25°C, wild-type enzyme | Escherichia coli |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.5 | - |
assay at | Escherichia coli |