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Literature summary for 2.3.1.79 extracted from
- Maltose transacetylase of Escherichia coli. Mapping and cloning of its structural, gene, mac, and characterization of the enzyme as a dimer of identical polypeptides with a molecular weight of 20,000 (1991), J. Biol. Chem., 266, 14113-14118.
Cloned(Commentary)
| Cloned (Comment) | Organism |
|---|---|
| cloning of the structural gene mac | Escherichia coli |
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| CoA-SH | product inhibition | Escherichia coli |  |
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.018 | - |
acetyl-CoA | - |
Escherichia coli | |
| 40 | - |
triethanolamine | - |
Escherichia coli | |
| 62 | - |
D-glucose | - |
Escherichia coli | |
| 90 | - |
maltose | - |
Escherichia coli | |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 20000 | - |
2 * 20000, SDS-PAGE | Escherichia coli |
| 40000 | - |
gel filtration | Escherichia coli |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| acetyl-CoA + maltose | Escherichia coli | - |
CoA + 6-O-acetyl-alpha-D-glucopyranosyl-(1->4)-D-glucose | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Escherichia coli | - |
- |
- |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
- |
Escherichia coli |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| 24.8 | - |
- |
Escherichia coli |
Storage Stability
| Storage Stability | Organism |
|---|---|
| -70°C, enzyme stored frozen in presence of 0.1% 2-mercaptoethanol and 40% glycerol without appreciable loss of activity | Escherichia coli |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| acetyl-CoA + D-fructose | - |
Escherichia coli | CoA + 6-O-acetyl-D-fructose | - |
? | |
| acetyl-CoA + D-galactose | - |
Escherichia coli | CoA + 6-O-acetyl-D-galactose | - |
? | |
| acetyl-CoA + D-glucose | - |
Escherichia coli | CoA + acetyl-D-glucose | - |
? | |
| acetyl-CoA + D-mannose | - |
Escherichia coli | CoA + 6-O-acetyl-D-mannose | - |
? | |
| acetyl-CoA + maltooligosaccharide | - |
Escherichia coli | CoA + ? | - |
? | |
| acetyl-CoA + maltose | - |
Escherichia coli | CoA + 6-O-acetyl-alpha-D-glucopyranosyl-(1->4)-D-glucose | - |
? | |
| acetyl-CoA + maltotriose | - |
Escherichia coli | CoA + 6-O-acetyl-alpha-D-glucopyranosyl-(1->4)-alpha-D-glucopyranosyl-(1->4)-D-glucopyranose | - |
? | |
| acetyl-CoA + triethanolamine | - |
Escherichia coli | CoA + acetyl-triethanolamine | - |
? | |
| additional information | rhamnose, arabinose, lactose, isopropyl-1-thio-beta-D-galactoside and trehalose are not substrates | Escherichia coli | ? | - |
? | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| dimer | 2 * 20000, SDS-PAGE | Escherichia coli |
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