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Literature summary for 5.3.1.6 extracted from
- Deficiency in a cytosolic ribose-5-phosphate isomerase causes chloroplast dysfunction, late flowering and premature cell death in Arabidopsis (2009), Physiol. Plant., 137, 249-263.
Cloned(Commentary)
| Cloned (Comment) | Organism |
|---|---|
| gene RPI2, phylogenetic analysis | Arabidopsis thaliana |
Protein Variants
| Protein Variants | Comment | Organism |
|---|---|---|
| additional information | construction of T-DNA knockout mutants of the RPI2 gene, which encodes the cytosolic ribose-5-phosphate isomerase. Knockout of the RPI2 gene does not significantly change the total RPI activity in the mutant plants, but knockout of RPI2 interferes with chloroplast structure and decreases chloroplast photosynthetic capacity. Rpi2 mutants accumulate less starch in the leaves and flower significantly later than wild-type when grown under short-day conditions, and rpi2 mutants display premature cell death in the leaves when grown at an above-normal temperature of 26°C, phenotypes, detailed overview | Arabidopsis thaliana |
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| cytosol | - |
Arabidopsis thaliana | 5829 | - |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| D-ribose-5-phosphate | Arabidopsis thaliana | the cytosolic ribose-5-phosphate isomerase catalyzes the reversible interconversion of ribulose-5-phosphate and ribose-5-phosphate in the non-oxidative phase of the oxidative pentose phosphate pathway | D-ribulose-5-phosphate | - |
? |  |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Arabidopsis thaliana | Q9ZU38 | gene RPI2, At2g01290 | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| D-ribose-5-phosphate | - |
Arabidopsis thaliana | D-ribulose-5-phosphate | - |
? | |
| D-ribose-5-phosphate | the cytosolic ribose-5-phosphate isomerase catalyzes the reversible interconversion of ribulose-5-phosphate and ribose-5-phosphate in the non-oxidative phase of the oxidative pentose phosphate pathway | Arabidopsis thaliana | D-ribulose-5-phosphate | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| RPI | - |
Arabidopsis thaliana |
| RPI2 protein | - |
Arabidopsis thaliana |
Temperature Optimum [°C]
| Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 37 | - |
assay at | Arabidopsis thaliana |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 7.4 | - |
assay at | Arabidopsis thaliana |
General Information
| General Information | Comment | Organism |
|---|---|---|
| malfunction | deficiency in a cytosolic ribose-5-phosphate isomerase causes chloroplast dysfunction, late flowering and premature cell death in Arabidopsis thaliana | Arabidopsis thaliana |
| metabolism | the cytosolic ribose-5-phosphate isomerase catalyzes the reversible interconversion of ribulose-5-phosphate and ribose-5-phosphate in the non-oxidative phase of the oxidative pentose phosphate pathway, which is part of central metabolism | Arabidopsis thaliana |
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