Protein Variants | Comment | Organism |
---|---|---|
additional information | immobilisation of the enzyme directly on a 27 MHz quartz crystal microbalance, QCM, plate, or on a dextran-acceptor-QCM plate, method evaluation and binding kinetics,overview. The enzymatic activity of DSase is not affected by immobilization, possibly due to the use of a long PEG spacer group. Typical frequency changes of the dextran-immobilized QCM as a function of time in response to the addition of DSase and sucrose substrate in 50 mM acetate buffer pH 5.2, 150 mM NaCl, and 1 mM CaCl2 at 25°C | Leuconostoc mesenteroides |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | DSase has a high affinity for dextran as first substrate with Kd of 18 nM, kinetic analysis of 27 MHz quartz crystal microbalance, QCM, plate-immobilized enzyme, overview | Leuconostoc mesenteroides | |
3 | - |
sucrose | enzyme in bulk solution, pH 5.2, 25°C | Leuconostoc mesenteroides | |
3.4 | - |
sucrose | dextran-QCM-immobilized enzyme, pH 5.2, 25°C | Leuconostoc mesenteroides | |
7.2 | - |
sucrose | directly QCM-immobilized enzyme, pH 5.2, 25°C | Leuconostoc mesenteroides |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Ca2+ | enhances activity | Leuconostoc mesenteroides |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
sucrose + [(1->6)-alpha-D-glucosyl]n | Leuconostoc mesenteroides | - |
D-fructose + [(1->6)-alpha-D-glucosyl]n+1 | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Leuconostoc mesenteroides | - |
- |
- |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
sucrose + [(1->6)-alpha-D-glucosyl]n = D-fructose + [(1->6)-alpha-D-glucosyl]n+1 | catalytic reaction mechanism for dextran elongation, overview | Leuconostoc mesenteroides |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | DSase can quickly proceed to elongation because the decomposition rate of the ESdex complex is very small | Leuconostoc mesenteroides | ? | - |
? | |
sucrose + [(1->6)-alpha-D-glucosyl]n | - |
Leuconostoc mesenteroides | D-fructose + [(1->6)-alpha-D-glucosyl]n+1 | - |
? | |
sucrose + [(1->6)-alpha-D-glucosyl]n | DSase-catalyzed dextran elongation | Leuconostoc mesenteroides | D-fructose + [(1->6)-alpha-D-glucosyl]n+1 | - |
? |
Synonyms | Comment | Organism |
---|---|---|
DSase | - |
Leuconostoc mesenteroides |
sucrose:1,6-alpha-D-glucan-6-alpha-D-glucosyltransferase | - |
Leuconostoc mesenteroides |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
25 | - |
assay at | Leuconostoc mesenteroides |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
3.1 | - |
sucrose | directly QCM-immobilized enzyme, pH 5.2, 25°C | Leuconostoc mesenteroides | |
3.5 | - |
sucrose | dextran-QCM-immobilized enzyme, pH 5.2, 25°C | Leuconostoc mesenteroides |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
5.2 | - |
assay at | Leuconostoc mesenteroides |