Literature summary for 2.4.1.21 extracted from

Denyer, K.; Waite, D.; Motawia, S.; Moller, B.L.; Smith, A.M.
Granule-bound starch synthase I in isolated starch granules elongates malto-oligosaccharides processively (1999), Biochem. J., 340, 183-191.

No PubMed abstract available

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Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
ADP-glucose + alpha-1,4-polyglucan	Pisum sativum	granule-bound starch synthase I synthesizes the amylose component of starch	ADP + alpha-1,4-polyglucan	-	?

Organism

Organism	UniProt	Comment	Textmining
Pisum sativum	-	-	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
ADP-glucose + alpha-1,4-polyglucan	granule-bound starch synthase I synthesizes the amylose component of starch	Pisum sativum	ADP + alpha-1,4-polyglucan	-	?
ADP-glucose + maltopentaose	-	Pisum sativum	ADP + maltohexaose	granule-bound starch synthase I, smaller amounts of longer malto-oligosaccharides are also produced suggesting that starch synthase I adds 1 or more glucose units to the primer	?
ADP-glucose + maltotriose	-	Pisum sativum	ADP + maltotetraose	starch synthase II adds only 1 glucose unit to the primer	?

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Release 2023.1 (January 2023)