Literature summary for 4.2.2.13 extracted from

Yip, V.L.Y.; Withers, S.G.
Nature's many mechanisms for the degradation of oligosaccharides (2004), Org. Biomol. Chem., 2, 2707-2713.

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Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
(1,4-alpha-D-glucosyl)n	Gracilariopsis sp.	degradation of glycogen and starch in eukaryotes	1,5-anhydro-D-fructose + (1,4-alpha-D-glucosyl)n-1	-	?

Organism

Organism	UniProt	Comment	Textmining
Gracilariopsis sp.	-	-	-

Reaction

Reaction	Comment	Organism	Reaction ID
[(1->4)-alpha-D-glucosyl]n+1 = 1,5-anhydro-D-fructose + [(1->4)-alpha-D-glucosyl]n	reaction mechanism occurred by an acid-catalysed formation of a covalent glycosyl-enzyme intermediate via the nucleophilic aspartic acid residue Asp 553 followed by the E1-like E2 elimination of the enzyme carboxylate to generate 1,5-anhydrofructose	Gracilariopsis sp.	a

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
(1,4-alpha-D-glucosyl)n	degradation of glycogen and starch in eukaryotes	Gracilariopsis sp.	1,5-anhydro-D-fructose + (1,4-alpha-D-glucosyl)n-1	-	?

Synonyms

Synonyms	Comment	Organism
alpha-1,4-Glucan lyase	-	Gracilariopsis sp.

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Release 2023.1 (January 2023)