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Literature summary extracted from

  • Umezurike, G.M.; Ekhorutomwen, S.A.
    Some properties of starch phosphorylase from cotyledons of germinating seeds of Voandzeia subterranea (1979), Biochim. Biophys. Acta, 567, 331-338.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
2.4.1.1 5'-AMP activation Voandzeia subterranea
2.4.1.1 5'-AMP 4 mM, 38 and 51% activation in the presence of 2 and 8 mM glucose 1-phosphate Voandzeia subterranea
2.4.1.1 cAMP activation Voandzeia subterranea
2.4.1.1 EDTA 1 mM, 114% activation Voandzeia subterranea
2.4.1.1 pyruvate stimulation Voandzeia subterranea

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.4.1.1 Zn2+ 1 mM, 27% inhibition Voandzeia subterranea

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.4.1.1 additional information
-
 additional information kinetic data Voandzeia subterranea
2.4.1.1 1.11
-
 AMP in the presence of 10 mM glucose 1-phosphate Voandzeia subterranea
2.4.1.1 2.7
-
 AMP in the presence of 2 mM glucose 1-phosphate Voandzeia subterranea
2.4.1.1 2.78
-
 alpha-D-glucose 1-phosphate in the presence of 5 mM AMP Voandzeia subterranea
2.4.1.1 7.14
-
 alpha-D-glucose 1-phosphate in the presence of 0.5 mM AMP Voandzeia subterranea

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
2.4.1.1 Mg2+ 1 mM, 59% activation Voandzeia subterranea
2.4.1.1 Mn2+ activation Voandzeia subterranea

Organism

EC Number Organism UniProt Comment Textmining
2.4.1.1 Voandzeia subterranea
-
 Bamberra groundnut, var. Thouars.
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.4.1.1 isozymes I and II Voandzeia subterranea

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.4.1.1 soluble starch + alpha-D-glucose 1-phosphate
-
 Voandzeia subterranea ?
-
 ?
2.4.1.1 [(1->4)-alpha-D-glucosyl]n + phosphate
-
 Voandzeia subterranea [(1->4)-alpha-D-glucosyl]n-1 + alpha-D-glucose 1-phosphate
-
 r

Subunits

EC Number Subunits Comment Organism
2.4.1.1 dimer isozyme I Voandzeia subterranea

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.4.1.1 5.5 5.6 isozyme I Voandzeia subterranea
2.4.1.1 6.1 6.3 isozyme II Voandzeia subterranea