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Literature summary extracted from
- Wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) multiple inositol polyphosphate phosphatases (MINPPs) are phytases expressed during grain filling and germination (2007), Plant Biotechnol. J., 5, 325-338.
Cloned(Commentary)
| EC Number | Cloned (Comment) | Organism |
|---|---|---|
| 3.1.3.26 | expressed in Escherichia coli | Triticum aestivum |
| 3.1.3.26 | expressed in Escherichia coli | Hordeum vulgare |
| 3.1.3.62 | expressed in Escherichia coli | Triticum aestivum |
Inhibitors
| EC Number | Inhibitors | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.1.3.26 | Co2+ | - |
Hordeum vulgare |  |
| 3.1.3.26 | Co2+ | - |
Triticum aestivum | |
| 3.1.3.26 | Zn2+ | - |
Hordeum vulgare | |
| 3.1.3.26 | Zn2+ | - |
Triticum aestivum | |
| 3.1.3.62 | Cu2+ | - |
Hordeum vulgare | |
| 3.1.3.62 | Cu2+ | - |
Triticum aestivum | |
| 3.1.3.62 | Zn2+ | - |
Hordeum vulgare | |
| 3.1.3.62 | Zn2+ | - |
Triticum aestivum | |
KM Value [mM]
| EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|---|
| 3.1.3.26 | 0.246 | - |
myo-inositol hexakisphosphate | - |
Triticum aestivum | |
| 3.1.3.26 | 0.334 | - |
myo-inositol hexakisphosphate | - |
Hordeum vulgare | |
| 3.1.3.62 | 0.246 | - |
Inositol hexakisphosphate | - |
Triticum aestivum | |
| 3.1.3.62 | 0.334 | - |
Inositol hexakisphosphate | - |
Hordeum vulgare | |
Localization
| EC Number | Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|---|
| 3.1.3.26 | endoplasmic reticulum | - |
Triticum aestivum | 5783 | - |
| 3.1.3.26 | endoplasmic reticulum | - |
Hordeum vulgare | 5783 | - |
| 3.1.3.62 | endoplasmic reticulum | all cDNAs contain an N-terminal signal peptide encoding sequence, and a KDEL-like sequence, KTEL, is present at the C-terminal, indicating that the enzyme is targeted to and retained within the endoplasmic reticulum | Hordeum vulgare | 5783 | - |
| 3.1.3.62 | endoplasmic reticulum | all cDNAs contain an N-terminal signal peptide encoding sequence, and a KDEL-like sequence, KTEL, is present at the C-terminal, indicating that the enzyme is targeted to and retained within the endoplasmic reticulum | Triticum aestivum | 5783 | - |
Organism
| EC Number | Organism | UniProt | Comment | Textmining |
|---|---|---|---|---|
| 3.1.3.26 | Hordeum vulgare | - |
- |
- |
| 3.1.3.26 | Triticum aestivum | - |
- |
- |
| 3.1.3.62 | Hordeum vulgare | A0FHA7 | - |
- |
| 3.1.3.62 | Hordeum vulgare | A0FHA8 | - |
- |
| 3.1.3.62 | Hordeum vulgare | A0FHA9 | - |
- |
| 3.1.3.62 | Triticum aestivum | A0FHB0 | - |
- |
| 3.1.3.62 | Triticum aestivum | A0FHB1 | - |
- |
| 3.1.3.62 | Triticum aestivum | A0FHB2 | - |
- |
| 3.1.3.62 | Triticum aestivum | A0FHB3 | - |
- |
Source Tissue
| EC Number | Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|---|
| 3.1.3.26 | seed | - |
Triticum aestivum | - |
| 3.1.3.26 | seed | - |
Hordeum vulgare | - |
| 3.1.3.62 | additional information | cDNAs show significantly different temporal and tissue-specific expression patterns during seed development and germination. With the exception of TaPhyIIb, the cDNAs are present during late seed development and germination | Hordeum vulgare | - |
| 3.1.3.62 | additional information | cDNAs show significantly different temporal and tissue-specific expression patterns during seed development and germination. With the exception of TaPhyIIb, the cDNAs are present during late seed development and germination | Triticum aestivum | - |
Specific Activity [micromol/min/mg]
| EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|---|
| 3.1.3.62 | additional information | - |
expression of HvPhyIIb in Escherichia coli reveals that the MINPPs possesses a significant phytase activity with narrow substrate specificity for phytate | Hordeum vulgare |
| 3.1.3.62 | additional information | - |
expression of TaPhyIIa2 in Escherichia coli reveals that the MINPPs possesses a significant phytase activity with narrow substrate specificity for phytate | Triticum aestivum |
Substrates and Products (Substrate)
| EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 3.1.3.26 | myo-inositol hexakisphosphate + H2O | - |
Triticum aestivum | myo-inositol pentakisphosphate + phosphate | - |
? | |
| 3.1.3.26 | myo-inositol hexakisphosphate + H2O | - |
Hordeum vulgare | myo-inositol pentakisphosphate + phosphate | - |
? | |
| 3.1.3.62 | inositol hexakisphosphate + H2O | - |
Triticum aestivum | inositol pentakisphosphate + phosphate | - |
? | |
| 3.1.3.62 | inositol hexakisphosphate + H2O | - |
Hordeum vulgare | inositol pentakisphosphate + phosphate | - |
? | |
Synonyms
| EC Number | Synonyms | Comment | Organism |
|---|---|---|---|
| 3.1.3.26 | Minpp | - |
Triticum aestivum |
| 3.1.3.26 | Minpp | - |
Hordeum vulgare |
| 3.1.3.26 | multiple inositol polyphosphate phosphatase | - |
Triticum aestivum |
| 3.1.3.26 | multiple inositol polyphosphate phosphatase | - |
Hordeum vulgare |
| 3.1.3.62 | HvPhyIIa1 | - |
Hordeum vulgare |
| 3.1.3.62 | HvPhyIIa2 | - |
Hordeum vulgare |
| 3.1.3.62 | HvPhyIIb | - |
Hordeum vulgare |
| 3.1.3.62 | Minpp | - |
Hordeum vulgare |
| 3.1.3.62 | Minpp | - |
Triticum aestivum |
| 3.1.3.62 | multiple inositol polyphosphate phosphatase | - |
Hordeum vulgare |
| 3.1.3.62 | multiple inositol polyphosphate phosphatase | - |
Triticum aestivum |
| 3.1.3.62 | TaPhyIIa1 | - |
Triticum aestivum |
| 3.1.3.62 | TaPhyIIa2 | - |
Triticum aestivum |
| 3.1.3.62 | TaPhyIIb | - |
Triticum aestivum |
| 3.1.3.62 | TaPhyIIc | - |
Triticum aestivum |
Temperature Optimum [°C]
| EC Number | Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|---|
| 3.1.3.26 | 65 | - |
- |
Triticum aestivum |
| 3.1.3.26 | 65 | - |
- |
Hordeum vulgare |
| 3.1.3.62 | 65 | - |
- |
Triticum aestivum |
| 3.1.3.62 | 65 | - |
- |
Hordeum vulgare |
pH Optimum
| EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|---|
| 3.1.3.26 | 4.5 | - |
- |
Triticum aestivum |
| 3.1.3.26 | 4.5 | - |
- |
Hordeum vulgare |
| 3.1.3.62 | 4.5 | - |
- |
Triticum aestivum |
| 3.1.3.62 | 4.5 | - |
- |
Hordeum vulgare |
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Release 2023.1 (January 2023)
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