Protein Variants | Comment | Organism |
---|---|---|
A290I | mutant enzyme A290I produces mostly maltose from maltotetraose, while wild-type enzyme produces glucose as well as maltose. kcat/KM of mutant enzyme 290I for maltose is 48times less than that of wild-type enzyme. kcat/Km for maltotriose is 18.5fold lower than wild-type enzyme. kcat/Km for maltotetraose is 2.9fold lower than wild-type enzyme. kcat/Km for maltopentaose is 2.5fold lower than wild-type enzyme. kcat/Km for maltohexaose is 1.9fold lower than wild-type enzyme. kcat/Km for maltoheptaose is 4.7fold lower than wild-type enzyme | Thermus sp. |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
1.13 | - |
maltotriose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
2.52 | - |
maltotriose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
2.95 | - |
maltotetraose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
3.38 | - |
maltotetraose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
3.5 | - |
maltopentaose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
3.97 | - |
maltopentaose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
7.16 | - |
maltohexaose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
7.53 | - |
maltohexaose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
8.18 | - |
maltoheptaose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
9.21 | - |
maltoheptaose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
63.43 | - |
maltose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
427 | - |
maltose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Thermus sp. | - |
recombinant | - |
Purification (Comment) | Organism |
---|---|
wild-type and mutant enzyme A290I | Thermus sp. |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
maltoheptaose + H2O | - |
Thermus sp. | maltose + D-glucose + ? | mutant enzyme A290I produces mostly maltose, while wild-type enzyme produces glucose (32.8%) as well as maltose | ? | |
maltohexaose + H2O | - |
Thermus sp. | ? | - |
? | |
maltopentaose + H2O | - |
Thermus sp. | ? | - |
? | |
maltose + H2O | - |
Thermus sp. | 2 D-glucose | - |
? | |
maltotetraose + H2O | - |
Thermus sp. | maltose + 2 D-glucose | mutant enzyme A290I produces mostly maltose, while wild-type enzyme produces glucose (24.8%) as well as maltose | ? | |
maltotriose + H2O | - |
Thermus sp. | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
ThMA | - |
Thermus sp. |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.037 | 0.23 | maltotriose | 50°C, pH 6.0, mutant enzyme A29I | Thermus sp. | |
0.04 | - |
maltose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
0.29 | - |
maltose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
2 | - |
maltoheptaose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
9.2 | - |
maltohexaose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
20 | 50 | maltohexaose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
29.8 | - |
maltotetraose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
42.5 | - |
maltoheptaose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
69.01 | - |
maltopentaose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
72.08 | - |
maltoheptaose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
79.07 | - |
maltotriose | 50°C, pH 6.0, mutant enzyme A29I | Thermus sp. | |
88.45 | - |
maltohexaose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
160.3 | - |
maltohexaose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
173.5 | - |
maltotetraose | 50°C, pH 6.0, mutant enzyme A290I | Thermus sp. | |
197 | - |
maltopentaose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
384.1 | - |
maltoheptaose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
574.1 | - |
maltotetraose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. | |
652.5 | - |
maltotriose | 50°C, pH 6.0, wild-type enzyme | Thermus sp. |