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Information on EC 2.4.1.125 - sucrose-1,6-alpha-glucan 3(6)-alpha-glucosyltransferase

for references in articles please use BRENDA:EC2.4.1.125
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IUBMB Comments
The glucansucrases transfer a D-glucosyl residue from sucrose to a glucan chain. They are classified based on the linkage by which they attach the transferred residue. In some cases, in which the enzyme forms more than one linkage type, classification relies on the relative proportion of the linkages that are generated. This enzyme extends (1->6)-alpha-D-glucans by both alpha(1->3) and alpha(1->6) linkages, with one of the linkage types being dominant. cf. EC 2.4.1.140, alternansucrase.
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Word Map
The expected taxonomic range for this enzyme is: Streptococcus
Synonyms
glucosyltransferase, sucrose-1,6-alpha-glucan 3(6)-alpha-, GTF-S, sucrose:1,6-, 1,3-alpha-D-glucan 3-alpha- and 6-alpha-D-glucosyltransferase, sucrose:1,6-alpha-D-glucan 3-alpha- and 6-alpha-glucosyltransferase, sucrose:1,6-alpha-glucan 3(6)-alpha-glucosyltransferase, water-soluble-glucan synthase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
sucrose + [(1->6)-alpha-D-glucosyl]n = D-fructose + (1->3)-alpha-D-glucosyl-[(1->6)-alpha-D-glucosyl]n
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(2)
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0
sucrose + [(1->6)-alpha-D-glucosyl]n = D-fructose + [(1->6)-alpha-D-glucosyl]n+1
show the reaction diagram
(1)
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0
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