KEGG   ENZYME: 2.4.1.140Help
Entry
EC 2.4.1.140                Enzyme                                 

Name
alternansucrase;
sucrose-1,6(3)-alpha-glucan 6(3)-alpha-glucosyltransferase;
sucrose:1,6-, 1,3-alpha-D-glucan 3-alpha- and 6-alpha-D-glucosyltransferase;
sucrose:1,6(1,3)-alpha-D-glucan 6(3)-alpha-D-glucosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
sucrose:(1->6)[(1->3)]-alpha-D-glucan 6(3)-alpha-D-glucosyltransferase
Reaction(IUBMB)
Transfers alternately an alpha-D-glucosyl residue from sucrose to the 6-position and the 3-position of the non-reducing terminal residue of an alpha-D-glucan, thus producing a glucan having alternating alpha-(1->6)- and alpha-(1->3)-linkages
Comment
The product, which has quite different properties from other dextrans, has been called alternan.
History
EC 2.4.1.140 created 1984, modified 2003
Reference
1  [PMID:7060056]
  Authors
Cote GL, Robyt JF.
  Title
Isolation and partial characterization of an extracellular glucansucrase from Leuconostoc mesenteroides NRRL B-1355 that synthesizes an alternating (1 goes to 6), (1 goes to 3)-alpha-D-glucan.
  Journal
Carbohydr. Res. 101 (1982) 57-74.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
100630-46-4

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