N-acetylglucosaminyldiphosphodolichol N-acetylglucosaminyltransferase activity
n-acetylglucosaminyldiphosphodolichol n-acetylglucosaminyltransferase activity
Catalysis of the reaction: UDP-N-acetyl-D-glucosamine + N-acetyl-D-glucosaminyl-diphosphodolichol = UDP + N,N''-diacetylchitobiosyldiphosphodolichol.