In humans, this enzyme, along with EC 2.7.1.127 (inositol-trisphosphate 3-kinase), EC 2.7.1.140 (inositol-tetrakisphosphate 5-kinase) and EC 2.7.1.158 (inositol pentakisphosphate 2-kinase) is involved in the production of inositol hexakisphosphate (InsP6). InsP6 is involved in many cellular processes, including mRNA export from the nucleus . Yeasts do not have this enzyme, so produce InsP6 from Ins(1,4,5)P3 by the actions of EC 2.7.1.151 (inositol-polyphosphate multikinase) and EC 2.7.1.158 (inositol-pentakisphosphate 2-kinase) . The enzymes from animals and plants also have the activity of EC 2.7.1.134, inositol-tetrakisphosphate 1-kinase.
In humans, this enzyme, along with EC 2.7.1.127 (inositol-trisphosphate 3-kinase), EC 2.7.1.140 (inositol-tetrakisphosphate 5-kinase) and EC 2.7.1.158 (inositol pentakisphosphate 2-kinase) is involved in the production of inositol hexakisphosphate (InsP6). InsP6 is involved in many cellular processes, including mRNA export from the nucleus [2]. Yeasts do not have this enzyme, so produce InsP6 from Ins(1,4,5)P3 by the actions of EC 2.7.1.151 (inositol-polyphosphate multikinase) and EC 2.7.1.158 (inositol-pentakisphosphate 2-kinase) [2]. The enzymes from animals and plants also have the activity of EC 2.7.1.134, inositol-tetrakisphosphate 1-kinase.
the formation of 1D-myo-inositol-1,3,4,6-tetrakisphosphate is slightly preferred compared to formation of 1D-myo-inositol-1,3,4,5-tetrakisphosphate, ratio 1.5:1
the formation of 1D-myo-inositol-1,3,4,6-tetrakisphosphate is slightly preferred compared to formation of 1D-myo-inositol-1,3,4,5-tetrakisphosphate, ratio 1.5:1
the enzyme also preferably performs the phosphoinositol trisphosphate 3-kinase reaction with 1D-myo-inositol-1,4,5-trisphosphate as substrate, EC 2.7.1.127, no activity with 1D-myo-inositol-1,4-bisphosphate
Please wait a moment until the data is sorted. This message will disappear when the data is sorted.
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
purified recombinant enzyme free or in complex with ATP analogue AMP-PCP and substrate inositol-1,3,4-trisphosphate in presence of Mg2+, 30 mg/ml protein in 25 mM Tris-HCl, pH 8.0, 150 mM NaCl, and 10 mM DTT, mixed with a solution containing 20% PEG 3000, 0.1 M Tris-HCl, pH 7.5, and 0.1 M Ca(OAc)2, several months, crystals are seeded into sitting drops of 15 mg/ml protein, 25% PEG 3350, 5% PEG 400, 0.1 M Bis-Tris, pH 5.5, 10 mM DTT, and 10 mM L-cysteine, with or without ligands added as 10 mM AMP-PCP, 10 mM MgCl2, and 5 mM inositol-1,3,4-trisphosphate, direct X-ray diffraction analysis after this step or further seeding adding ADP and other ligands, overview, X-ray diffraction structure determination and analysis at 1.2-2.0 A resolution