MetaCyc Reaction: 3.2.1.-

Superclasses: Reactions Classified By Conversion TypeSimple ReactionsChemical Reactions
Reactions Classified By SubstrateSmall-Molecule Reactions

EC Number: 3.2.1.-

Enzymes and Genes:

Pyrococcus furiosus DSM 3638: amylopullulanaseInferred from experiment: apu

In Pathway: starch degradation V

Reaction Locations: extracellular space

The direction shown, i.e. which substrates are on the left and right sides, is in accordance with the direction in which it was curated.

Mass balance status: Marked as unbalanced.

Enzyme Commission Primary Name: 3.2.1 -- Glycosidases, i.e. enzymes hydrolyzing O- and S-glycosyl compounds

In this reaction starch is hydrolyzed to a mixture of maltodextrins ( a maltodextrin), maltose and D-glucose in the extracellular space. Stoichiometric coefficients are undetermined.

Citations: [Dong97]

Gene-Reaction Schematic

Gene-Reaction Schematic

Created 25-Feb-2011 by Fulcher CA, SRI International


Ball03: Ball SG, Morell MK (2003). "From bacterial glycogen to starch: understanding the biogenesis of the plant starch granule." Annu Rev Plant Biol 54;207-33. PMID: 14502990

Ball11: Ball S, Colleoni C, Cenci U, Raj JN, Tirtiaux C (2011). "The evolution of glycogen and starch metabolism in eukaryotes gives molecular clues to understand the establishment of plastid endosymbiosis." J Exp Bot 62(6);1775-801. PMID: 21220783

Buleon98: Buleon A, Colonna P, Planchot V, Ball S (1998). "Starch granules: structure and biosynthesis." Int J Biol Macromol 23(2);85-112. PMID: 9730163

Dong97: Dong G, Vieille C, Zeikus JG (1997). "Cloning, sequencing, and expression of the gene encoding amylopullulanase from Pyrococcus furiosus and biochemical characterization of the recombinant enzyme." Appl Environ Microbiol 63(9);3577-84. PMID: 9293009

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Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
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