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Literature summary extracted from

  • RayChaudhuri, A.; Hait, N.C.; das Gupta, S.; Bhaduri, T.J.; Deb, R.; Majumder, A.L.
    L-myo-Inositol 1-phosphate synthase from plant sources (1997), Plant Physiol., 115, 727-736.
    View publication on PubMedView publication on EuropePMC

Activating Compound

EC Number Activating Compound Comment Organism Structure
5.5.1.4 NH4+
-
 Saccharomyces cerevisiae
5.5.1.4 NH4+ 10-14 mM NH4Cl, 5fold stimulation. Other NH4+ salts are strong inhibitors Euglena gracilis
5.5.1.4 NH4+ 10-14 mM NH4Cl, 5fold stimulation. Other NH4+ salts are strong inhibitors Vigna radiata
5.5.1.4 NH4+ 10-14 mM NH4Cl, 5fold stimulation. Other NH4+ salts are strong inhibitors Oryza sativa

Inhibitors

EC Number Inhibitors Comment Organism Structure
5.5.1.4 (NH4)2SO4
-
 Euglena gracilis
5.5.1.4 (NH4)2SO4
-
 Oryza sativa
5.5.1.4 (NH4)2SO4
-
 Vigna radiata
5.5.1.4 Cu2+ CuCl2 Euglena gracilis
5.5.1.4 Cu2+ CuCl2 Oryza sativa
5.5.1.4 Cu2+ CuCl2 Vigna radiata
5.5.1.4 D-fructose 6-phosphate
-
 Euglena gracilis
5.5.1.4 D-fructose 6-phosphate
-
 Oryza sativa
5.5.1.4 D-fructose 6-phosphate
-
 Vigna radiata
5.5.1.4 D-galactose 6-phosphate
-
 Euglena gracilis
5.5.1.4 D-galactose 6-phosphate
-
 Oryza sativa
5.5.1.4 D-galactose 6-phosphate
-
 Vigna radiata
5.5.1.4 FeCl2
-
 Euglena gracilis
5.5.1.4 FeCl2
-
 Oryza sativa
5.5.1.4 FeCl2
-
 Vigna radiata
5.5.1.4 glucitol 6-phosphate
-
 Euglena gracilis
5.5.1.4 glucitol 6-phosphate
-
 Oryza sativa
5.5.1.4 glucitol 6-phosphate
-
 Vigna radiata
5.5.1.4 Inositol 4 mM Euglena gracilis
5.5.1.4 Inositol 4 mM Oryza sativa
5.5.1.4 Inositol 4 mM Vigna radiata
5.5.1.4 K+ concentration-dependent inhibition up to 5 mM Euglena gracilis
5.5.1.4 K+ 5 mM, 10-15% inhibition Oryza sativa
5.5.1.4 K+ concentration-dependent inhibition up to 5 mM Vigna radiata
5.5.1.4 Li+ LiCl Euglena gracilis
5.5.1.4 Li+ LiCl Oryza sativa
5.5.1.4 Li+ LiCl Vigna radiata
5.5.1.4 mannitol 4 mM Euglena gracilis
5.5.1.4 mannitol 4 mM Oryza sativa
5.5.1.4 mannitol 4 mM Vigna radiata
5.5.1.4 Na+ 1 mM and above; chloroplastic and cytosolic enzyme Euglena gracilis
5.5.1.4 Na+ 1 mM and above; chloroplastic enzyme Vigna radiata
5.5.1.4 NEM 0.5-2 mM Euglena gracilis
5.5.1.4 NEM 0.5-2 mM Oryza sativa
5.5.1.4 NH4HCO3
-
 Euglena gracilis
5.5.1.4 NH4HCO3
-
 Oryza sativa
5.5.1.4 NH4HCO3
-
 Vigna radiata
5.5.1.4 PbCl2
-
 Euglena gracilis
5.5.1.4 PbCl2
-
 Oryza sativa
5.5.1.4 PbCl2
-
 Vigna radiata
5.5.1.4 PCMB 0.5-2 mM Euglena gracilis
5.5.1.4 PCMB 0.5-2 mM Oryza sativa
5.5.1.4 sorbitol 4 mM Euglena gracilis
5.5.1.4 sorbitol 4 mM Oryza sativa
5.5.1.4 sorbitol 4 mM Vigna radiata
5.5.1.4 Zn2+ ZnCl2 Euglena gracilis
5.5.1.4 Zn2+ ZnCl2 Oryza sativa
5.5.1.4 Zn2+ ZnCl2 Vigna radiata

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
5.5.1.4 0.08
-
 NAD+ chloroplastic enzyme Oryza sativa
5.5.1.4 0.11
-
 NAD+ cytosolic enzyme Arthrospira platensis
5.5.1.4 0.12
-
 NAD+ chloroplastic enzyme Euglena gracilis
5.5.1.4 0.14
-
 NAD+ cytosolic enzyme Oryza sativa
5.5.1.4 0.16
-
 NAD+ cytosolic enzyme from green cells Euglena gracilis
5.5.1.4 0.19
-
 NAD+ cytosolic enzyme from dark-grown cells Euglena gracilis
5.5.1.4 0.2
-
 NAD+ cytosolic enzyme from streptomycin-bleached cells Euglena gracilis
5.5.1.4 0.26
-
 D-glucose 6-phosphate NAD+, chloroplastic enzyme Vigna radiata
5.5.1.4 1.95
-
 glucose 6-phosphate cytosolic enzyme from streptomycin-bleached cells, and chloroplastidic enzyme Euglena gracilis
5.5.1.4 1.97
-
 glucose 6-phosphate cytosolic enzyme Oryza sativa
5.5.1.4 2.14
-
 glucose 6-phosphate chloroplastic enzyme Oryza sativa
5.5.1.4 2.17
-
 glucose 6-phosphate cytosolic enzyme Arthrospira platensis
5.5.1.4 2.25
-
 glucose 6-phosphate cytosolic enzyme from green cells Euglena gracilis
5.5.1.4 2.51
-
 glucose 6-phosphate cytosolic enzyme from dark-grown cells Euglena gracilis
5.5.1.4 2.85
-
 glucose 6-phosphate chloroplastic enzyme Vigna radiata

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
5.5.1.4 chloroplast
-
 Euglena gracilis 9507
-
5.5.1.4 chloroplast
-
 Vigna radiata 9507
-
5.5.1.4 chloroplast
-
 Oryza sativa 9507
-
5.5.1.4 cytosol
-
 Euglena gracilis 5829
-
5.5.1.4 cytosol
-
 Vigna radiata 5829
-
5.5.1.4 cytosol
-
 Oryza sativa 5829
-
5.5.1.4 cytosol
-
 Arthrospira platensis 5829
-

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
5.5.1.4 K+
-
 Saccharomyces cerevisiae
5.5.1.4 K+ stimulation of chloroplastic and cytosolic enzyme up to 2.5 mM Oryza sativa

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
5.5.1.4 59000
-
 3 * 59000, cytosolic enzyme, SDS-PAGE Oryza sativa
5.5.1.4 59000
-
 4 * 59000, chloroplastic enzyme, SDS-PAGE Oryza sativa
5.5.1.4 61000
-
 3 * 61000, cytosolic enzyme, SDS-PAGE Euglena gracilis
5.5.1.4 61000
-
 4 * 61000, chloroplastic enzyme, SDS-PAGE Euglena gracilis
5.5.1.4 67000
-
 3 * 67000, cytosolic enzyme, SDS-PAGE Arthrospira platensis
5.5.1.4 67000
-
 4 * 67000, chloroplastic enzyme, SDS-PAGE Arthrospira platensis
5.5.1.4 179000
-
 cytosolic enzyme, gel filtration Euglena gracilis
5.5.1.4 179000
-
 cytosolic enzyme, gel filtration Oryza sativa
5.5.1.4 200300
-
 cytosolic enzyme, gel filtration Arthrospira platensis
5.5.1.4 248000
-
 chloroplastic enzyme, gel filtration Euglena gracilis
5.5.1.4 253000
-
 chloroplastic enzyme, gel filtration Oryza sativa
5.5.1.4 266000
-
 chloroplastic enzyme, gel filtration Vigna radiata

Organism

EC Number Organism UniProt Comment Textmining
5.5.1.4 Arthrospira platensis
-
-
-
5.5.1.4 Euglena gracilis
-
-
-
5.5.1.4 Oryza sativa
-
-
-
5.5.1.4 Saccharomyces cerevisiae
-
-
-
5.5.1.4 Vigna radiata
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
5.5.1.4
-
 Euglena gracilis
5.5.1.4
-
 Vigna radiata
5.5.1.4
-
 Oryza sativa
5.5.1.4
-
 Arthrospira platensis

Source Tissue

EC Number Source Tissue Comment Organism Textmining
5.5.1.4 culture condition:inositol-deficient-grown cell
-
 Saccharomyces cerevisiae
-
5.5.1.4 culture condition:inositol-deficient-grown cell
-
 Euglena gracilis
-
5.5.1.4 leaf
-
 Vigna radiata
-
5.5.1.4 leaf
-
 Oryza sativa
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
5.5.1.4 D-Glucose 6-phosphate
-
 Saccharomyces cerevisiae L-myo-Inositol 1-phosphate
-
 ?
5.5.1.4 D-Glucose 6-phosphate absolute specificity for Euglena gracilis L-myo-Inositol 1-phosphate
-
 ?
5.5.1.4 D-Glucose 6-phosphate absolute specificity for Vigna radiata L-myo-Inositol 1-phosphate
-
 ?
5.5.1.4 D-Glucose 6-phosphate absolute specificity for Oryza sativa L-myo-Inositol 1-phosphate
-
 ?
5.5.1.4 D-Glucose 6-phosphate absolute specificity for Arthrospira platensis L-myo-Inositol 1-phosphate
-
 ?

Subunits

EC Number Subunits Comment Organism
5.5.1.4 tetramer
-
 Saccharomyces cerevisiae
5.5.1.4 tetramer
-
 Vigna radiata
5.5.1.4 tetramer 4 * 67000, chloroplastic enzyme, SDS-PAGE Arthrospira platensis
5.5.1.4 tetramer 4 * 59000, chloroplastic enzyme, SDS-PAGE Oryza sativa
5.5.1.4 tetramer 4 * 61000, chloroplastic enzyme, SDS-PAGE Euglena gracilis
5.5.1.4 trimer 3 * 59000, cytosolic enzyme, SDS-PAGE Oryza sativa
5.5.1.4 trimer 3 * 61000, cytosolic enzyme, SDS-PAGE Euglena gracilis
5.5.1.4 trimer 3 * 67000, cytosolic enzyme, SDS-PAGE Arthrospira platensis

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
5.5.1.4 35 37
-
 Euglena gracilis
5.5.1.4 35 37
-
 Vigna radiata
5.5.1.4 35 37
-
 Oryza sativa
5.5.1.4 35 37
-
 Arthrospira platensis

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5.1.4 7.2
-
 chloroplastic enzyme Vigna radiata
5.5.1.4 7.6
-
 chloroplastic enzyme Oryza sativa
5.5.1.4 7.6
-
 cytosolic and chloroplastic enzyme Euglena gracilis
5.5.1.4 7.8
-
 cytosolic enzyme Arthrospira platensis
5.5.1.4 8.2
-
 cytosolic enzyme Oryza sativa