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Literature summary extracted from

  • Miyamoto, J.; Ishigami, T.; Hayashi, T.; Nakajima, T.; Ichishima, E.; Matsuda, K.
    Some properties of granule-bound starch synthase in suspension-cultured soybean cells (1989), Agric. Biol. Chem., 53, 1987-1988.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.4.1.21 ADP 0.1 mM, 26% inhibition Glycine max
2.4.1.21 ATP 0.1 mM, 22% inhibition Glycine max
2.4.1.21 Cu2+ significant inhibition Glycine max

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
2.4.1.21 starch grain
-
 Glycine max 43036
-

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
2.4.1.21 K+ slight activation Glycine max
2.4.1.21 Mg2+ slight activation Glycine max

Organism

EC Number Organism UniProt Comment Textmining
2.4.1.21 Glycine max
-
 soybean
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.4.1.21 ADP-glucose + alpha-1,4-polyglucan citrate independent enzyme requires a glucan primer e.g. rabbit liver glycogen Glycine max ADP + alpha-1,4-polyglucan
-
 ?
2.4.1.21 ADP-glucose + alpha-1,4-polyglucan glucosyl acceptor: oyster glycogen Glycine max ADP + alpha-1,4-polyglucan
-
 ?
2.4.1.21 ADP-glucose + alpha-1,4-polyglucan glucosyl acceptor: starch Glycine max ADP + alpha-1,4-polyglucan
-
 ?
2.4.1.21 ADP-glucose + alpha-1,4-polyglucan glucosyl acceptor: amylopectin Glycine max ADP + alpha-1,4-polyglucan
-
 ?

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
2.4.1.21 50
-
-
 Glycine max

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
2.4.1.21 50
-
 stable up to Glycine max

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.4.1.21 8.5
-
-
 Glycine max

pH Range

EC Number pH Minimum pH Maximum Comment Organism
2.4.1.21 6 9
-
 Glycine max