EC - Galactosylxylosylprotein 3-β-galactosyltransferase

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DE   Galactosylxylosylprotein 3-beta-galactosyltransferase.
AN   Galactosyltransferase II.
AN   Uridine diphosphogalactose-galactosylxylose galactosyltransferase.
CA   UDP-alpha-D-galactose + 4-beta-D-galactosyl-O-beta-D-xylosyl-[protein] =
CA   UDP + 3-beta-D-galactosyl-4-beta-D-galactosyl-O-beta-D-xylosyl-[protein].
CF   Mn(2+).
CC   -!- Involved in the biosynthesis of the linkage region of
CC       glycosaminoglycan chains as part of proteoglycan biosynthesis
CC       (chondroitin, dermatan and heparan sulfates).
DR   Q96L58    , B3GT6_HUMAN;  Q91Z92    , B3GT6_MOUSE;  Q9USX0    , PVG3_SCHPO ;
DR   Q9N491    , SQV2_CAEEL ;