ID   2.4.1.140
DE   alternansucrase.
AN   sucrose:1,6-, 1,3-alpha-D-glucan 3-alpha- and 6-alpha-D-
AN   glucosyltransferase.
AN   sucrose-1,6(3)-alpha-glucan 6(3)-alpha-glucosyltransferase.
CA   Transfers alternately an alpha-D-glucosyl residue from sucrose to the
CA   6-position and the 3-position of the non-reducing terminal residue of an
CA   alpha-D-glucan, thus producing a glucan having alternating alpha-(1->6)-
CA   and alpha-(1->3)-linkages.
CC   -!- The glucansucrases transfer a D-glusosyl residue from sucrose to a
CC       glucan chain.
CC   -!- They are classified based on the linkage by which they attach the
CC       transferred residue.
CC   -!- In some cases, in which the enzyme forms more than one linkage type,
CC       classification relies on the relative proportion of the linkages that
CC       are generated.
CC   -!- This enzyme forms both alpha(1->3) and alpha(1->6) linkages in
CC       approximately equal amounts by alternating the linkage type. cf.
CC       EC 2.4.1.125.
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