| id | GO:0004653 Detailed information
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| name | polypeptide N-acetylgalactosaminyltransferase activity
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| namespace | molecular_function
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| def | "Catalysis of the reaction: UDP-N-acetyl-D-galactosamine + polypeptide = UDP + N-acetyl-D-galactosaminyl-polypeptide. This reaction is the modification of serine or threonine residues in polypeptide chains by the transfer of a N-acetylgalactose from UDP-N-acetylgalactose to the hydroxyl group of the amino acid; it is the first step in O-glycan biosynthesis." [EC:2.4.1.41, ISBN:0879695595]
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| synonym | "glycoprotein acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "polypeptide-N-acetylgalactosamine transferase activity" EXACT [EC:2.4.1.41]
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| synonym | "protein-UDP acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-acetylgalactosamine-glycoprotein acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-acetylgalactosamine:peptide-N-galactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-GalNAc:polypeptide N-acetylgalactosaminyl transferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-GalNAc:polypeptide N-acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-N-acetyl-alpha-D-galactosamine:polypeptide N-acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-N-acetyl-D-galactosamine:polypeptide N-acetylgalactosaminyl-transferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-N-acetylgalactosamine-glycoprotein N-acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-N-acetylgalactosamine-protein N-acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-N-acetylgalactosamine:kappa-casein polypeptide N-acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-N-acetylgalactosamine:polypeptide N-acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| synonym | "UDP-N-acetylgalactosamine:protein N-acetylgalactosaminyl transferase activity" EXACT [EC:2.4.1.41]
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| synonym | "uridine diphosphoacetylgalactosamine-glycoprotein acetylgalactosaminyltransferase activity" EXACT [EC:2.4.1.41]
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| xref | EC:2.4.1.41
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| xref | MetaCyc:2.4.1.41-RXN
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| is_a | GO:0008376 ! acetylgalactosaminyltransferase activity
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