EC Number |
Substrates |
Organism |
Products |
Reversibility |
---|
2.7.4.27 | more |
pyruvate orthophosphate dikinase regulatory protein, PDRP, is a bifunctional enzyme that catalyzes both phosphorylation and dephosphorylation of the pyruvate orthophosphate dikinase. Enzyme PDRP uses ADP as the phosphoryl donor for kinase activity, and employs a phosphate-dependent, diphosphate-forming dephosphorylation mechanism |
Zea mays |
? |
- |
? |
2.7.4.27 | more |
isoform PDRP2 lacks the PPDK-P dephosphorylation activity of the PDRP1 isoform except when PDRP2 in the assays is elevated 5- to 10fold |
Zea mays |
? |
- |
- |
2.7.4.27 | [pyruvate, phosphate dikinase] phosphate + phosphate |
- |
Zea mays |
pyruvate, phosphate dikinase + diphosphate |
- |
? |
2.7.4.27 | [pyruvate, phosphate dikinase] phosphate + phosphate |
His458 and Thr456 phosphorylated (inactive), strict requirement for the threonyl phosphate, unable to dephosphorylate Ser-P at this same position |
Arabidopsis thaliana |
pyruvate, phosphate dikinase + diphosphate |
His458 phosphorylated (active) |
? |
2.7.4.27 | [pyruvate, phosphate dikinase] phosphate + phosphate |
Thr residue phosphorylated (inactive) |
Oryza sativa |
pyruvate, phosphate dikinase + diphosphate |
active |
? |
2.7.4.27 | [pyruvate, phosphate dikinase] phosphate + phosphate |
Thr456 and His458 phosphorylated (inactive) |
Zea mays |
pyruvate, phosphate dikinase + diphosphate |
His458 phosphorylated (active) |
? |
2.7.4.27 | [pyruvate, phosphate dikinase] phosphate + phosphate |
- |
Zea mays |
[pyruvate, phosphate dikinase] + diphosphate |
- |
? |
2.7.4.27 | [pyruvate, phosphate dikinase] phosphate + phosphate |
- |
Zea mays |
[pyruvate, phosphate dikinase] + diphosphate |
reversible phosphorylation at Thr527 by maize pyruvate orthophosphate dikinase regulatory protein. The level of C4PPDK phosphorylated at Ser528 is much lower than that at Thr527 in maize leaves, meaning that phosphorylation at Ser528 is not as important as at Thr527 for the regulation of PPDK activity. The bifunctional enzyme exhibits kinase activity, EC 2.7.11.32, and dephosphorylation activity, EC 2.7.4.27 |
? |
2.7.4.27 | [pyruvate, phosphate dikinase] phosphate + phosphate |
- |
Zea mays |
[pyruvate, phosphate dikinase] + diphosphate |
reversible phosphorylation by maize pyruvate orthophosphate dikinase regulatory protein. Residues Thr527 and Ser528, but not Thr309 and Ser506, are targets of PDRP. The bifunctional enzyme exhibits kinase activity, EC 2.7.11.32, and dephosphorylation activity, EC 2.7.4.27 |
? |
2.7.4.27 | [pyruvate, phosphate dikinase] phosphate + phosphate |
- |
Zea mays |
[pyruvate, phosphate dikinase] + diphosphate |
reversible phosphorylation by maize pyruvate orthophosphate dikinase regulatory protein. The bifunctional enzyme exhibits kinase activity, EC 2.7.11.32, and dephosphorylation activity, EC 2.7.4.27 |
? |