Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
twitter

MetaCyc Reaction: 2.4.1.19

Superclasses: Reactions Classified By Conversion Type Simple Reactions Chemical Reactions
Reactions Classified By Substrate Small-Molecule Reactions

EC Number: 2.4.1.19

Enzymes and Genes:
cyclomaltodextrin glucanotransferase Inferred from experiment : cgtA ( Thermococcus sp. B1001 )
cyclodextrin glucanotransferase Inferred from experiment : cgt ( Archaeoglobus fulgidus 7324 )

In Pathway: starch degradation IV , starch degradation III

Note that this reaction equation differs from the official Enzyme Commission reaction equation for this EC number, which can be found here .

Reaction Locations: extracellular space

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.

Mass balance status: Marked as unbalanced.

Enzyme Commission Primary Name: cyclomaltodextrin glucanotransferase

Enzyme Commission Synonyms: Bacillus macerans amylase, cyclodextrin glucanotransferase, α-cyclodextrin glucanotransferase, α-cyclodextrin glycosyltransferase, β-cyclodextrin glucanotransferase, β-cyclodextrin glycosyltransferase, γ-cyclodextrin glycosyltransferase, cyclodextrin glycosyltransferase, cyclomaltodextrin glucotransferase, cyclomaltodextrin glycosyltransferase, konchizaimu, α-1,4-glucan 4-glycosyltransferase, cyclizing, BMA, CGTase, neutral-cyclodextrin glycosyltransferase, 1,4-α-D-glucan 4-α-D-(1,4-α-D-glucano)-transferase (cyclizing)

Enzyme Commission Summary:
The enzyme cyclizes a part of a (1→4)-α-D-glucan chain by formation of a (1→4)-α-D-glucosidic bond.

Cyclodextrins (Schardinger dextrins) of various sizes (6,7,8, etc. glucose units) are formed reversibly from starch and similar substrates.

Will also disproportionate linear maltodextrins without cyclizing (cf. EC 2.4.1.25, 4-α-glucanotransferase).

Citations: [Labes07, DePinto68, Schwimmer53]

Gene-Reaction Schematic: ?

Relationship Links: BRENDA:EC:2.4.1.19 , ENZYME:EC:2.4.1.19 , IUBMB-ExplorEnz:EC:2.4.1.19

Credits:
Created 22-Feb-2011 by Fulcher CA , SRI International


References

DePinto68: DePinto JA, Campbell LL (1968). "Purification and properties of the amylase of Bacillus macerans." Biochemistry 7(1);114-20. PMID: 5758537

Labes07: Labes A, Schonheit P (2007). "Unusual starch degradation pathway via cyclodextrins in the hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus strain 7324." J Bacteriol 189(24);8901-13. PMID: 17921308

Schwimmer53: Schwimmer S (1953). "Evidence for the purity of Schardinger dextrinogenase." Arch Biochem Biophys 43(1);108-17. PMID: 13031665


Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
Page generated by SRI International Pathway Tools version 18.5 on Fri Nov 28, 2014, BIOCYC13B.