Cloned (Comment) | Organism |
---|---|
root enzyme | Zea mays |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
malate | the phosphorylated enzyme is less sensitive to malate | Zea mays |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
phosphate | the enzyme from root is phosphorylated by both mammalian cAMP-dependent protein kinase and maize leaf protein kinase, the phosphorylated enzyme is less sensitive to malate | Zea mays |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
Phosphoenolpyruvate + CO2 | Zea mays | three PEPC isoforms: one is the C4-form PEPC, which plays a cardinal role in the initial CO2-fixation of C4 photosynthesis by capturing atmospheric CO2 into C4-dicarboxylic acids, the second one is a C3-housekeeping PEPC, which plays anaplerotic roles by replenishing C4-dicarboxylic acids in the citric acid cycle for synthesis of cell constituents, the root-form PEPC plays various anaplerotic roles, including providing the carbon skeletons for nitrogen assimilation, pH maintenance, and osmolarity regulation | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Zea mays | - |
3 enzyme forms: root-form PEPC, C4-form PEPC, C3-housekeeping form PEPC | - |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
root | - |
Zea mays | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
phosphoenolpyruvate + CO2 | - |
Zea mays | phosphate + oxaloacetate | - |
? | |
Phosphoenolpyruvate + CO2 | three PEPC isoforms: one is the C4-form PEPC, which plays a cardinal role in the initial CO2-fixation of C4 photosynthesis by capturing atmospheric CO2 into C4-dicarboxylic acids, the second one is a C3-housekeeping PEPC, which plays anaplerotic roles by replenishing C4-dicarboxylic acids in the citric acid cycle for synthesis of cell constituents, the root-form PEPC plays various anaplerotic roles, including providing the carbon skeletons for nitrogen assimilation, pH maintenance, and osmolarity regulation | Zea mays | ? | - |
? |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
8 | - |
root-form PEPC and C4-form PEPC | Zea mays |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
7 | 8 | pH 7.0: 90% of maximal activity of the root-form PEPC, 40% of maximal activity of the C4-form PEPC | Zea mays |