ID   2.4.1.175
DE   Glucuronosyl-N-acetylgalactosaminyl-proteoglycan 4-beta-N-
DE   acetylgalactosaminyltransferase.
AN   Chondroitin synthase.
AN   Glucuronyl-N-acetylgalactosaminylproteoglycan beta-1,4-N-
AN   acetylgalactosaminyltransferase.
AN   N-acetylgalactosaminyltransferase II.
AN   UDP-N-acetyl-D-galactosamine:D-glucuronyl-N-acetyl-1,3-beta-D-
AN   galactosaminylproteoglycan beta-1,4-N-acetylgalactosaminyltransferase.
AN   Uridine diphosphoacetylgalactosamine-chondroitin
AN   acetylgalactosaminyltransferase II.
CA   UDP-N-acetyl-D-galactosamine + beta-D-glucuronosyl-(1->3)-N-acetyl-beta-
CA   D-galactosaminyl-proteoglycan = UDP + N-acetyl-beta-D-galactosaminyl-
CA   (1->4)-beta-D-glucuronosyl-(1->3)-N-acetyl-beta-D-galactosaminyl-
CA   proteoglycan.
CC   -!- Involved in the biosynthesis of chondroitin sulfate.
CC   -!- The human form of this enzyme is a bifunctional glycosyltransferase,
CC       which also has the EC 2.4.1.226 activity required for the synthesis
CC       of the chondroitin sulfate disaccharide repeats.
CC   -!- Similar chondroitin synthase 'copolymerases' can be found in
CC       Pasteurella multocida and Escherichia coli.
DR   Q86X52, CHSS1_HUMAN;  Q6ZQ11, CHSS1_MOUSE;  P45895, CHSS2_CAEEL;
DR   Q8IZ52, CHSS2_HUMAN;  Q6IQX7, CHSS2_MOUSE;  Q70JA7, CHSS3_HUMAN;
DR   Q5DTK1, CHSS3_MOUSE;  Q8L0V4, CHS_ECOLX  ;  Q9CMP0, CHS_PASMU  ;
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