Cloned (Comment) | Organism |
---|---|
expression of GST-tagged wild-type enzyme and of mutant enzymes in Escherichia coli | Entamoeba histolytica |
Crystallization (Comment) | Organism |
---|---|
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 | Entamoeba histolytica |
Protein Variants | Comment | Organism |
---|---|---|
additional information | construction of diverse mutants and analysis of the function of the residues in catalysis and substrate binding, overview | Entamoeba histolytica |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | - |
Entamoeba histolytica |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + 1D-myo-inositol-1,3,4-trisphosphate | Entamoeba histolytica | - |
ADP + 1D-myo-inositol-1,3,4,5-tetrakisphosphate | - |
? | |
ATP + 1D-myo-inositol-1,3,4-trisphosphate | Entamoeba histolytica | - |
ADP + 1D-myo-inositol-1,3,4,6-tetrakisphosphate | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Entamoeba histolytica | Q9XYQ1 | - |
- |
Purification (Comment) | Organism |
---|---|
recombinant GST-tagged enzyme from Escherichia coli by glutathione affinity chromatography and gel filtration | Entamoeba histolytica |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
ATP + 1D-myo-inositol-1,3,4-trisphosphate = ADP + 1D-myo-inositol-1,3,4,5-tetrakisphosphate | determination of substrate binding sites, catalytic reaction mechanism | Entamoeba histolytica | |
ATP + 1D-myo-inositol-1,3,4-trisphosphate = ADP + 1D-myo-inositol-1,3,4,6-tetrakisphosphate | determination of substrate binding sites, catalytic reaction mechanism | Entamoeba histolytica |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + 1D-myo-inositol-1,3,4-trisphosphate | - |
Entamoeba histolytica | ADP + 1D-myo-inositol-1,3,4,5-tetrakisphosphate | - |
? | |
ATP + 1D-myo-inositol-1,3,4-trisphosphate | - |
Entamoeba histolytica | ADP + 1D-myo-inositol-1,3,4,6-tetrakisphosphate | - |
? | |
additional information | the enzyme shows multiple activities | Entamoeba histolytica | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
IP56K | - |
Entamoeba histolytica |
More | the enzyme belongs to the ATP-grasp family | Entamoeba histolytica |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
assay at | Entamoeba histolytica |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.2 | - |
assay at | Entamoeba histolytica |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
ATP | - |
Entamoeba histolytica |