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Literature summary for 2.4.1.21 extracted from

  • Goldner, W.; Beevers, H.
    Starch synthase and starch branching enzyme from germinating castor bean endosperm (1989), Phytochemistry, 28, 1809-1812.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
citrate
-
Ricinus communis

Organism

Organism UniProt Comment Textmining
Ricinus communis
-
castor bean
-

Purification (Commentary)

Purification (Comment) Organism
partial Ricinus communis

Source Tissue

Source Tissue Comment Organism Textmining
cell suspension culture
-
Ricinus communis
-
endosperm
-
Ricinus communis
-

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 Ricinus communis ADP + alpha-1,4-polyglucan
-
?
ADP-glucose + alpha-1,4-polyglucan glucosyl acceptor: oyster glycogen Ricinus communis ADP + alpha-1,4-polyglucan
-
?
ADP-glucose + alpha-1,4-polyglucan enzyme shows both primed activity with amylopectin as glucose acceptor and unprimed activity in the presence of high citrate and bovine serum albumin, 4fold lower activity with UDPglucose instead of ADPglucose Ricinus communis ADP + alpha-1,4-polyglucan
-
?
ADP-glucose + alpha-1,4-polyglucan glucosyl acceptor: amylopectin Ricinus communis ADP + alpha-1,4-polyglucan
-
?