EC Number | Cloned (Comment) | Organism |
---|---|---|
3.2.1.70 | expressed in Escherichia coli BL21(DE3) CodonPlus RIL cells | Streptococcus mutans |
EC Number | Metals/Ions | Comment | Organism | Structure |
---|---|---|---|---|
3.2.1.70 | Ca2+ | the addition of Ca2+ (optimum 5 mM) enhances the thermostability of dextran glucosidase but has no significant effect on catalytic reaction | Streptococcus mutans | |
3.2.1.70 | Mg2+ | the addition of Mg2+ (optimum 15 mM) enhances the thermostability of dextran glucosidase | Streptococcus mutans | |
3.2.1.70 | additional information | K+ and Na+ do not enhance the thermostability of dextran glucosidase | Streptococcus mutans |
EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
3.2.1.70 | dextran + H2O | Streptococcus mutans | - |
beta-D-glucose + ? | - |
? |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
3.2.1.70 | Streptococcus mutans | - |
- |
- |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
3.2.1.70 | 4-nitrophenyl alpha-D-glucopyranoside + H2O | - |
Streptococcus mutans | 4-nitrophenol + alpha-D-glucopyranose | - |
? | |
3.2.1.70 | dextran + H2O | - |
Streptococcus mutans | beta-D-glucose + ? | - |
? |
EC Number | Synonyms | Comment | Organism |
---|---|---|---|
3.2.1.70 | dextran glucosidase | - |
Streptococcus mutans |
EC Number | Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|---|
3.2.1.70 | 46 | - |
the enzyme activity drops to 50% in 5 min at 46°C at 0-1 mM Ca2+, but the presence of 2 mM Ca2+ prolongs this to 30 min and 3-30 mM Ca2+ stabilizes the enzyme so that it retains 70% activity or higher even after 60 min incubation at 46°C | Streptococcus mutans |
EC Number | pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|---|
3.2.1.70 | 5.5 | 7 | the enzyme is stable between pH 5.5 and 7.0 in the presence of 5 mM Ca2+ after 15 min at 37°C | Streptococcus mutans |
3.2.1.70 | 5.8 | 6.7 | the enzyme is stable between pH 5.8 and 6.7 in the absence of Ca2+ after 15 min at 37°C | Streptococcus mutans |