EC Number |
Protein Variants |
Reference |
---|
1.1.99.35 | E277H |
substrate specificity: D-glucose 100% activity, 2-deoxy-D-glucose 3%, D-mannose 11%, D-allose 67%, 3-O-methyl-D-glucose 45%, D-galactose 12%, D-xylose 9%, D-lactose 57%, D-maltose 39%, respectively |
639216 |
1.1.99.35 | E277K |
substrate specificity: D-glucose 100% activity, 2-deoxy-D-glucose 7%, D-mannose 18%, D-allose 116%, 3-O-methyl-D-glucose 84%, D-galactose 28%, D-xylose 18%, D-lactose 79%, D-maltose 74%, respectively |
639216 |
1.1.99.35 | E277N |
substrate specificity: D-glucose 100% activity, 2-deoxy-D-glucose 8%, D-mannose 29%, D-allose 148%, 3-O-methyl-D-glucose 91%, D-galactose 43%, D-xylose 18%, D-lactose 86%, D-maltose 59%, respectively |
639216 |
1.1.99.35 | E277Q |
substrate specificity: D-glucose 100% activity, 2-deoxy-D-glucose 10%, D-mannose 31%, D-allose 134%, 3-O-methyl-D-glucose 80%, D-galactose 35%, D-xylose 25%, D-lactose 68%, D-maltose 54%, respectively |
639216 |
1.1.99.35 | E277V |
substrate specificity: D-glucose 100% activity, 2-deoxy-D-glucose 8%, D-mannose 29%, D-allose 150%, 3-O-methyl-D-glucose 101%, D-galactose 25%, D-xylose 19%, D-lactose 114%, D-maltose 65%, respectively |
639216 |
1.1.99.35 | I278F |
substrate specificity: D-glucose 100% activity, 2-deoxy-D-glucose 4%, D-mannose 14%, D-allose 54%, 3-O-methyl-D-glucose 47%, D-galactose 15%, D-xylose 12%, D-lactose 64%, D-maltose 49%, respectively |
639216 |
1.1.99.35 | more |
constructed of heterodimeric PQQGDH-B composed of native wild-type and inactive mutant H168Q subunits. The heterodimeric wild-type/H168Q shows slightly decreased GDH activity and almost identical substrate specificity profile to the wild-type enzyme. The Hill coefficient of the heterodimer is calculated as 1.13, indicating positive cooperativity |
655929 |
1.1.99.35 | more |
expression in Pichia pastoris using the Saccharomyces cerevisiae alpha-factor signal sequence for secretion. The productivity of secreted PQQGDH-B achieves 218 kU/liter, i.e. 43 mg/liter. The secreted PQQGDH-B in Pichia pastoris is glycosylated but shows similar enzymatic properties as compared with those of recombinant PQQGDH-B produced in Escherichia coli |
655363 |
1.1.99.35 | N279H |
substrate specificity: D-glucose 100% activity, 2-deoxy-D-glucose 2%, D-mannose 6%, D-allose 49%, 3-O-methyl-D-glucose 50%, D-galactose 13%, D-xylose 8%, D-lactose 64%, D-maltose 61%, respectively |
639216 |
1.1.99.35 | N428C |
the catalytic efficiency is increased by 47% compared to the wild type enzyme, the mutant shows increased affinity for pyrroloquinoline quinone and is twice more active toward D-glucose and more selective toward maltose than the wild type |
724172 |