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Literature summary for 2.4.1.21 extracted from

  • Boyer, C.D.
    Soluble starch synthases and starch branching enzymes from developing seeds of sorghum (1985), Phytochemistry, 24, 15-18.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
citrate
-
Sorghum bicolor

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.05 0.1 ADPglucose
-
Sorghum bicolor

Localization

Localization Comment Organism GeneOntology No. Textmining
soluble
-
Sorghum bicolor
-
-

Organism

Organism UniProt Comment Textmining
Sorghum bicolor
-
-
-

Storage Stability

Storage Stability Organism
-20°C, 6 months, 50% loss of activity Sorghum bicolor
0°C, 1 month, 30% loss of activity Sorghum bicolor

Substrates and Products (Substrate)

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