Reaction catalyzed by alternansucrase (2.4.1.140)

+

=

+

+

+

sucrose

+

methyl-beta-D-glucopyranoside

=

methyl beta-isomaltoside

+

methyl beta-isomaltotrioside

+

methyl alpha-D-glucopyranosyl-(1,3)-alpha-D-glucopyranosyl-(1,6)-beta-D-glucopyranoside

+

beta-D-fructofuranose