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Literature summary for 1.1.1.44 extracted from

  • Simcox, P.D.; Dennis, D.T.
    6-Phosphogluconate dehydrogenase isoenzymes from the developing endosperm of Ricinus communis L. (1978), Plant Physiol., 62, 287-290.
    View publication on PubMedView publication on EuropePMC

General Stability

General Stability Organism
both isoenzymes stabilized by the H2PO4- Ricinus communis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0041
-
NADP+ cytosolic isoenzyme Ricinus communis
0.0054
-
NADP+ proplastid isoenzyme Ricinus communis
0.0096
-
6-phosphogluconate proplastid isoenzyme Ricinus communis
0.012
-
6-phosphogluconate cytosolic isoenzyme Ricinus communis
1.7
-
MgCl2 cytosolic isoenzyme Ricinus communis
2.4
-
MgCl2 proplastid isoenzyme Ricinus communis

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol
-
Spinacia oleracea 5829
-
cytosol
-
Ricinus communis 5829
-
proplastid
-
Ricinus communis 9537
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ MgCl2 stimulation for the oxidative decarboxylation of 6-phosphogluconate Ricinus communis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
54000
-
2 * 54000, cytosolic isoenzyme, SDS-PAGE Ricinus communis
55000
-
2 * 55000, SDS-PAGE Ricinus communis

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
6-phospho-D-gluconate + NADP+ Vigna radiata var. radiata
-
D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+ Daucus carota
-
D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+ Ricinus communis endosperm contains both cytosolic and plastic glycolytic and pentose phosphate pathway D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+ Spinacia oleracea enzyme specific for the oxidative pentose phosphate pathway D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+ Ricinus communis enzyme specific for the oxidative pentose phosphate pathway D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r

Organism

Organism UniProt Comment Textmining
Daucus carota
-
carrot
-
Ricinus communis
-
castor bean, Baker 296 "Dwarf"
-
Spinacia oleracea
-
-
-
Vigna radiata var. radiata
-
black gram, mung bean
-

Purification (Commentary)

Purification (Comment) Organism
-
Ricinus communis

Source Tissue

Source Tissue Comment Organism Textmining
endosperm
-
Ricinus communis
-
leaf
-
Spinacia oleracea
-
leaf
-
Ricinus communis
-
root
-
Daucus carota
-
seed
-
Ricinus communis
-
seedling
-
Vigna radiata var. radiata
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
13.6
-
-
Ricinus communis
38
-
cytoplasmic isoenzyme Ricinus communis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
6-phospho-D-gluconate + NADP+
-
Vigna radiata var. radiata D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+
-
Spinacia oleracea D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+
-
Ricinus communis D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+
-
Daucus carota D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+ endosperm contains both cytosolic and plastic glycolytic and pentose phosphate pathway Ricinus communis D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+ enzyme specific for the oxidative pentose phosphate pathway Spinacia oleracea D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r
6-phospho-D-gluconate + NADP+ enzyme specific for the oxidative pentose phosphate pathway Ricinus communis D-ribulose 5-phosphate + CO2 + NADPH + H+
-
r

Subunits

Subunits Comment Organism
dimer 2 * 55000, SDS-PAGE Ricinus communis
dimer 2 * 54000, cytosolic isoenzyme, SDS-PAGE Ricinus communis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.8 8 cytosolic and proplastid isoenzymes Ricinus communis