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Information on EC 2.4.1.242 - NDP-glucose-starch glucosyltransferase

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EC Tree
     2 Transferases
         2.4 Glycosyltransferases
             2.4.1 Hexosyltransferases
                2.4.1.242 NDP-glucose-starch glucosyltransferase
IUBMB Comments
Unlike EC 2.4.1.11, glycogen(starch) synthase and EC 2.4.1.21, starch synthase, which use UDP-glucose and ADP-glucose, respectively, this enzyme can use either UDP- or ADP-glucose. Mutants that lack the Wx (waxy) allele cannot produce this enzyme, which plays an important role in the normal synthesis of amylose. In such mutants, only amylopectin is produced in the endosperm or pollen .
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Word Map
The expected taxonomic range for this enzyme is: Eukaryota, Archaea, Bacteria
Synonyms
sgp-1, wx-b1, wx-a1, waxy protein, gbss1, wx-d1, gbssii, wx protein, gbss i, granule bound starch synthase i, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
NDP-glucose + [(1->4)-alpha-D-glucosyl]n = NDP + [(1->4)-alpha-D-glucosyl]n+1
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