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Literature summary extracted from
- Active site residue 297 of Aspergillus niger phytase critically affects the catalytic properties (2000), FEBS Lett., 472, 169-172.
Protein Variants
| EC Number | Protein Variants | Comment | Organism |
|---|---|---|---|
| 3.1.3.8 | E89D | mutant enzyme from strain T213, slight decrease in activity | Aspergillus niger |
| 3.1.3.8 | E89D/H292N/R297Q | mutant enzyme from strain T213, about 3fold increase in activity | Aspergillus niger |
| 3.1.3.8 | E89D/R297Q | mutant enzyme from strain T213, 2.6fold increase in activity | Aspergillus niger |
| 3.1.3.8 | H292N | mutant enzyme from strain T213, as active as wild-type enzyme | Aspergillus niger |
| 3.1.3.8 | H292N/R297Q | mutant enzyme from strain T213, about 3fold increase in activity | Aspergillus niger |
| 3.1.3.8 | R297Q | mutant enzyme from strain T213, about 3fold increase in activity | Aspergillus niger |
| 3.1.3.26 | E89D | mutant enzyme from strain T213, slight decrease in activity | Aspergillus niger |
| 3.1.3.26 | E89D/H292N/R297Q | mutant enzyme from strain T213, about 3fold increase in activity | Aspergillus niger |
| 3.1.3.26 | E89D/R297Q | mutant enzyme from strain T213, 2.6fold increase in activity | Aspergillus niger |
| 3.1.3.26 | H292N | mutant enzyme from strain T213, as active as wild-type enzyme | Aspergillus niger |
| 3.1.3.26 | H292N/R297Q | mutant enzyme from strain T213, about 3fold increase in activity | Aspergillus niger |
| 3.1.3.26 | R297Q | mutant enzyme from strain T213, about 3fold increase in activity | Aspergillus niger |
Organism
| EC Number | Organism | UniProt | Comment | Textmining |
|---|---|---|---|---|
| 3.1.3.8 | Aspergillus niger | - |
strain NRRL3135. The T213 phytase differs from NRRL 3135 phytase at 12 amino acid residues.S13 in NRRL 3135 and A14 in T213, S30 in NRRL 3135 and T14 in T213, E66 in NRRL 3135 and D66 in T213, D89 in NRRL 3135 and E89 in T213, A106 in NRRL 3135 and V106 in T213, V155 in NRRL 3135 and I155 in T213, K171 in NRRL 3135 and E171 in T213, V236 in NRRL 3135 and A236 in T213, N292 in NRRL 3135 and H292 in T213, Q297 in NRRL 3135 and R297 in T213, S345 in NRRL 3135 and N345 in T213, V438 in NRRL 3135 and I438 in T213. The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified. | - |
| 3.1.3.8 | Aspergillus niger | - |
The T213 phytase differs from NRRL 3135 phytase at 12 amino acid residues.S13 in NRRL 3135 and A14 in T213, S30 in NRRL 3135 and T14 in T213, E66 in NRRL 3135 and D66 in T213, D89 in NRRL 3135 and E89 in T213, A106 in NRRL 3135 and V106 in T213, V155 in NRRL 3135 and I155 in T213, K171 in NRRL 3135 and E171 in T213, V236 in NRRL 3135 and A236 in T213, N292 in NRRL 3135 and H292 in T213, Q297 in NRRL 3135 and R297 in T213, S345 in NRRL 3135 and N345 in T213, V438 in NRRL 3135 and I438 in T213. The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified. | - |
| 3.1.3.8 | Aspergillus niger NRRL 3135 | - |
strain NRRL3135. The T213 phytase differs from NRRL 3135 phytase at 12 amino acid residues.S13 in NRRL 3135 and A14 in T213, S30 in NRRL 3135 and T14 in T213, E66 in NRRL 3135 and D66 in T213, D89 in NRRL 3135 and E89 in T213, A106 in NRRL 3135 and V106 in T213, V155 in NRRL 3135 and I155 in T213, K171 in NRRL 3135 and E171 in T213, V236 in NRRL 3135 and A236 in T213, N292 in NRRL 3135 and H292 in T213, Q297 in NRRL 3135 and R297 in T213, S345 in NRRL 3135 and N345 in T213, V438 in NRRL 3135 and I438 in T213. The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified. | - |
| 3.1.3.8 | Aspergillus niger T213 | - |
The T213 phytase differs from NRRL 3135 phytase at 12 amino acid residues.S13 in NRRL 3135 and A14 in T213, S30 in NRRL 3135 and T14 in T213, E66 in NRRL 3135 and D66 in T213, D89 in NRRL 3135 and E89 in T213, A106 in NRRL 3135 and V106 in T213, V155 in NRRL 3135 and I155 in T213, K171 in NRRL 3135 and E171 in T213, V236 in NRRL 3135 and A236 in T213, N292 in NRRL 3135 and H292 in T213, Q297 in NRRL 3135 and R297 in T213, S345 in NRRL 3135 and N345 in T213, V438 in NRRL 3135 and I438 in T213. The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified. | - |
| 3.1.3.26 | Aspergillus niger | - |
strain NRRL3135. The T213 phytase differs from NRRL 3135 phytase at 12 amino acid residues.S13 in NRRL 3135 and A14 in T213, S30 in NRRL 3135 and T14 in T213, E66 in NRRL 3135 and D66 in T213, D89 in NRRL 3135 and E89 in T213, A106 in NRRL 3135 and V106 in T213, V155 in NRRL 3135 and I155 in T213, K171 in NRRL 3135 and E171 in T213, V236 in NRRL 3135 and A236 in T213, N292 in NRRL 3135 and H292 in T213, Q297 in NRRL 3135 and R297 in T213, S345 in NRRL 3135 and N345 in T213, V438 in NRRL 3135 and I438 in T213. The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified. | - |
| 3.1.3.26 | Aspergillus niger | - |
The T213 phytase differs from NRRL 3135 phytase at 12 amino acid residues.S13 in NRRL 3135 and A14 in T213, S30 in NRRL 3135 and T14 in T213, E66 in NRRL 3135 and D66 in T213, D89 in NRRL 3135 and E89 in T213, A106 in NRRL 3135 and V106 in T213, V155 in NRRL 3135 and I155 in T213, K171 in NRRL 3135 and E171 in T213, V236 in NRRL 3135 and A236 in T213, N292 in NRRL 3135 and H292 in T213, Q297 in NRRL 3135 and R297 in T213, S345 in NRRL 3135 and N345 in T213, V438 in NRRL 3135 and I438 in T213. The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified. | - |
| 3.1.3.26 | Aspergillus niger NRRL 3135 | - |
strain NRRL3135. The T213 phytase differs from NRRL 3135 phytase at 12 amino acid residues.S13 in NRRL 3135 and A14 in T213, S30 in NRRL 3135 and T14 in T213, E66 in NRRL 3135 and D66 in T213, D89 in NRRL 3135 and E89 in T213, A106 in NRRL 3135 and V106 in T213, V155 in NRRL 3135 and I155 in T213, K171 in NRRL 3135 and E171 in T213, V236 in NRRL 3135 and A236 in T213, N292 in NRRL 3135 and H292 in T213, Q297 in NRRL 3135 and R297 in T213, S345 in NRRL 3135 and N345 in T213, V438 in NRRL 3135 and I438 in T213. The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified. | - |
| 3.1.3.26 | Aspergillus niger T213 | - |
The T213 phytase differs from NRRL 3135 phytase at 12 amino acid residues.S13 in NRRL 3135 and A14 in T213, S30 in NRRL 3135 and T14 in T213, E66 in NRRL 3135 and D66 in T213, D89 in NRRL 3135 and E89 in T213, A106 in NRRL 3135 and V106 in T213, V155 in NRRL 3135 and I155 in T213, K171 in NRRL 3135 and E171 in T213, V236 in NRRL 3135 and A236 in T213, N292 in NRRL 3135 and H292 in T213, Q297 in NRRL 3135 and R297 in T213, S345 in NRRL 3135 and N345 in T213, V438 in NRRL 3135 and I438 in T213. The enzyme may be a 3-phytase (EC 3.1.3.8), or a 4-phytase (synonym 6-phytase, EC 3.1.3.26). The product of the hydrolysis of myo-inositol hexakisphosphate to 1D-myo-inositol 1,2,4,5,6-pentakisphosphate or alternatively 1D-myo-inositol 1,2,3,5,6-pentakisphosphate has not been identified. | - |
Substrates and Products (Substrate)
| EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 3.1.3.8 | myo-inositol hexakisphosphate + H2O | product release is the rate limiting step of the reaction | Aspergillus niger | ? + phosphate | - |
? |  |
| 3.1.3.8 | myo-inositol hexakisphosphate + H2O | product release is the rate limiting step of the reaction | Aspergillus niger NRRL 3135 | ? + phosphate | - |
? | |
| 3.1.3.8 | myo-inositol hexakisphosphate + H2O | product release is the rate limiting step of the reaction | Aspergillus niger T213 | ? + phosphate | - |
? | |
| 3.1.3.26 | myo-inositol hexakisphosphate + H2O | product release is the rate limiting step of the reaction | Aspergillus niger | ? + phosphate | - |
? | |
| 3.1.3.26 | myo-inositol hexakisphosphate + H2O | product release is the rate limiting step of the reaction | Aspergillus niger NRRL 3135 | ? + phosphate | - |
? | |
| 3.1.3.26 | myo-inositol hexakisphosphate + H2O | product release is the rate limiting step of the reaction | Aspergillus niger T213 | ? + phosphate | - |
? | |
pH Optimum
| EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|---|
| 3.1.3.8 | 5.5 | - |
and a second lower optimum (60% of the activity at pH 5.5) at pH 2.5 for NRRL 3135 phytase. Specific activity for the T213 phytase is 3fold lower than for the NRRL 3135 phytase | Aspergillus niger |
| 3.1.3.26 | 5.5 | - |
and a second lower optimum (60% of the activity at pH 5.5) at pH 2.5 for NRRL 3135 phytase. Specific activity for the T213 phytase is 3fold lower than for the NRRL 3135 phytase | Aspergillus niger |
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