Inositol-hexakisphosphate kinase
| Inositol-hexakisphosphate kinase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 2.7.4.21 | ||||||||
| CAS no. | 176898-37-6 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
Inositol-hexakisphosphate kinase (EC 2.7.4.21, ATP:1D-myo-inositol-hexakisphosphate phosphotransferase) is an enzyme with systematic name ATP:1D-myo-inositol-hexakisphosphate 5-phosphotransferase. This enzyme catalyses the following chemical reaction
- (1) ATP + 1D-myo-inositol hexakisphosphate(Phytic acid) ADP + 1D-myo-inositol 5-diphosphate 1,2,3,4,6-pentakisphosphate
- (2) ATP + 1D-myo-inositol 1,3,4,5,6-pentakisphosphate ADP + 1D-myo-inositol diphosphate tetrakisphosphate (isomeric configuration unknown)
Three mammalian isoforms are known to exist.