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Literature summary for 3.2.1.67 extracted from
- Polygalcturonase in pollen from corn and other grasses (1989), Plant Sci., 59, 57-62.
No PubMed abstract available
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| citrate | chelating agent | Zea mays |  |
| EDTA | chelating agent | Zea mays | |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 51000 | - |
gel filtration | Zea mays |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| pectic acid + H2O | Zea mays | - |
D-galacturonide + ? | - |
? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Zea mays | - |
corn | - |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| partially | Zea mays |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| pollen | - |
Zea mays | - |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| 16 | - |
- |
Zea mays |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| (1,4-alpha-D-galacturonide)6 + H2O | - |
Zea mays | D-galacturonic acid + (1,4-alpha-D-galacturonide)5 | products increase with time, gradually tetragalacturonic acid and trigalacturonic acid appears, exoenzyme removes monomeric units from the substrate | ? | |
| (1,4-alpha-D-galacturonide)n + H2O | large galacturonans, release of monomeric units from the non-reducing ends of the substrate chains | Zea mays | D-galacturonate + digalacturonic acid + trigalacturonic acid | - |
? | |
| pectic acid + H2O | - |
Zea mays | D-galacturonic acid + ? | - |
? | |
| pectic acid + H2O | - |
Zea mays | D-galacturonide + ? | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| corn pollen polygalacturonase | - |
Zea mays |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 5.3 | - |
polygalacturonate, pH optimum independend of Ca2+ concentration | Zea mays |
pH Range
| pH Minimum | pH Maximum | Comment | Organism |
|---|---|---|---|
| 4 | 7.5 | polygalacturonate | Zea mays |
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