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Literature summary for 5.1.3.21 extracted from
- A novel enzyme, maltose 1-epimerase from Lactobacillus brevis IFO 3345 (1995), FEBS Lett., 367, 177-179.
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| Cu2+ | - |
Levilactobacillus brevis |  |
| Hg2+ | - |
Levilactobacillus brevis | |
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 2.2 | - |
beta-maltose | - |
Levilactobacillus brevis | |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 43000 | - |
gel filtration | Levilactobacillus brevis |
| 45000 | - |
1 * 45000, SDS-PAGE | Levilactobacillus brevis |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Levilactobacillus brevis | - |
IFO 3345 | - |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
- |
Levilactobacillus brevis |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| 1710 | - |
- |
Levilactobacillus brevis |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| alpha-D-glucose | at 26% of the activity with beta-maltose | Levilactobacillus brevis | beta-D-glucose | - |
r | |
| alpha-lactose | at 5% of the activity with beta-maltose | Levilactobacillus brevis | beta-lactose | - |
? | |
| beta-cellobiose | at 4% of the activity with beta-maltose | Levilactobacillus brevis | alpha-cellobiose | - |
? | |
| beta-D-glucose | at 27% of the activity with beta-maltose | Levilactobacillus brevis | alpha-D-glucose | - |
r | |
| beta-Maltose | - |
Levilactobacillus brevis | alpha-Maltose | - |
r | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| monomer | 1 * 45000, SDS-PAGE | Levilactobacillus brevis |
Temperature Optimum [°C]
| Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 40 | - |
- |
Levilactobacillus brevis |
Temperature Stability [°C]
| Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 45 | - |
10 min, 50 mM phosphate buffer, stable | Levilactobacillus brevis |
| 60 | - |
10 min, 50 mM phosphate buffer, 50% loss of activity | Levilactobacillus brevis |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 6.5 | 7 | - |
Levilactobacillus brevis |
pH Range
| pH Minimum | pH Maximum | Comment | Organism |
|---|---|---|---|
| 5 | 8.5 | more than 80% of activity in the pH-range pH 5.0-8.5 | Levilactobacillus brevis |
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Release 2023.1 (January 2023)
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