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Literature summary extracted from
- Purification and characterization of three soluble invertases from barley (Hordeum vulgare L.) leaves (1993), Plant Physiol., 101, 1331-1339.
Inhibitors
| EC Number | Inhibitors | Comment | Organism | Structure |
|---|---|---|---|---|
| 3.2.1.26 | Hg2+ | invertase I is more than 2fold more resistant than invertase IIA and IIB | Hordeum vulgare |  |
| 3.2.1.26 | pyridoxal | invertase I is more than 2fold more resistant than invertase IIA and IIB | Hordeum vulgare | |
KM Value [mM]
| EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|---|
| 3.2.1.26 | 1 | - |
sucrose | invertase IIA | Hordeum vulgare | |
| 3.2.1.26 | 1.7 | - |
sucrose | invertase IIB | Hordeum vulgare | |
| 3.2.1.26 | 8.1 | - |
sucrose | invertase I | Hordeum vulgare | |
Localization
| EC Number | Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|---|
| 3.2.1.26 | intracellular | - |
Hordeum vulgare | 5622 | - |
Molecular Weight [Da]
| EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.26 | 64000 | - |
invertase I, gel filtration | Hordeum vulgare |
| 3.2.1.26 | 116000 | - |
invertase IIa, gel filtration | Hordeum vulgare |
| 3.2.1.26 | 155000 | - |
invertase IIb, gel filtration | Hordeum vulgare |
Organism
| EC Number | Organism | UniProt | Comment | Textmining |
|---|---|---|---|---|
| 3.2.1.26 | Hordeum vulgare | - |
- |
- |
Purification (Commentary)
| EC Number | Purification (Comment) | Organism |
|---|---|---|
| 3.2.1.26 | invertase I, IIa and Iib | Hordeum vulgare |
Source Tissue
| EC Number | Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|---|
| 3.2.1.26 | leaf | three soluble invertases | Hordeum vulgare | - |
Specific Activity [micromol/min/mg]
| EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|---|
| 3.2.1.26 | 50 | - |
invertase I | Hordeum vulgare |
| 3.2.1.26 | 109 | - |
invertase IIA | Hordeum vulgare |
| 3.2.1.26 | 192 | - |
invertase IIB | Hordeum vulgare |
Substrates and Products (Substrate)
| EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|---|
| 3.2.1.26 | 2 sucrose | fructosyltransferase activity at high sucrose concentrations | Hordeum vulgare | 1-kestose + glucose | - |
? | |
| 3.2.1.26 | sucrose + H2O | - |
Hordeum vulgare | D-fructose + D-glucose | - |
? | |
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Release 2023.1 (January 2023)
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