Cloned (Comment) | Organism |
---|---|
gene IPK1, recombinant expression | Arabidopsis thaliana |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | required | Arabidopsis thaliana |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + 1D-myo-inositol 1,3,4,5,6-pentakisphosphate | Arabidopsis thaliana | - |
ADP + 1D-myo-inositol hexakisphosphate | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Arabidopsis thaliana | Q93YN9 | - |
- |
Purification (Comment) | Organism |
---|---|
recombinant enzyme | Arabidopsis thaliana |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + 1D-myo-inositol 1,3,4,5,6-pentakisphosphate | - |
Arabidopsis thaliana | ADP + 1D-myo-inositol hexakisphosphate | - |
? | |
additional information | with inositol tris/tetrakisphosphate kinase 1 (ITPK1, EC 2.7.1.134) and inositol pentakisphosphate 2-kinase (IPK1, EC 2.7.1.158) combined at a 1:20 ATP:ADP ratio, InsP6 is converted via Ins(1,3,4,5,6)P5 to Ins(3,4,5,6) P4 and/or Ins(1,4,5,6)P4 with concomitant generation of ATP | Arabidopsis thaliana | ? | - |
- |
Synonyms | Comment | Organism |
---|---|---|
At5g42810 | - |
Arabidopsis thaliana |
inositol pentakisphosphate 2-kinase | - |
Arabidopsis thaliana |
Ipk1 | - |
Arabidopsis thaliana |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
25 | - |
assay at | Arabidopsis thaliana |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.5 | - |
assay at | Arabidopsis thaliana |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
ATP | - |
Arabidopsis thaliana |
General Information | Comment | Organism |
---|---|---|
metabolism | inositol tris/tetrakisphosphate kinase 1 (ITPK1, EC 2.7.1.134) and inositol pentakisphosphate 2-kinase (IPK1, EC 2.7.1.158) comprise a reversible metabolic cassette converting Ins(3,4,5,6)P4 into 5-InsP7 and back in a nucleotide-dependent manner. Ability of Arabidopsis inositol tris/tetrakisphosphate kinase 1 to discriminate between symmetric and enantiomeric substrates in the production of diverse symmetric and asymmetric myo-inositol phosphate and diphospho-myo-inositol phosphate (inositol diphosphate) products | Arabidopsis thaliana |