Catalytic activity:UDP-N-acetyl-D-glucosamine + peptide = UDP + N-acetyl-beta-D-glucosaminyl-peptide. ,Function:Addition of nucleotide-activated sugars directly onto the polypeptide through O-glycosidic linkage with the hydroxyl of serine or threonine. ,online information:UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase 110kDa subunit ,pathway:Protein modification; protein glycosylation. ,similarity:Belongs to the O-GlcNAc transferase family. ,similarity:Contains 13 TPR repeats. ,subunit:Heterotrimer of two 110 kDa and one 70 kDa subunits. It is not known if the 70 kDa subunit is encoded by a separate gene or is the product of either of a proteolytic degradation or an alternative initiation of the 110 kDa subunit (By similarity) . Interacts with HCFC1. ,tissue specificity:Highly expressed in pancreas and to a lesser extent in skeletal muscle , heart , brain and placenta. Present in trace amounts in lung and liver. ,
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