N-acetyl-alpha-D-glucosamine 1-phosphate + N-acetyl-D-glucosamine => N,N'-diacetylchitobiose + phosphate
n-acetyl-alpha-d-glucosamine 1-phosphate + n-acetyl-d-glucosamine => n,n'-diacetylchitobiose + phosphate
N-acetyl-alpha-D-glucosamine 1-phosphate + N-acetyl-D-glucosamine => N,N'-diacetylchitobiose + phosphate
n-acetyl-alpha-d-glucosamine 1-phosphate + n-acetyl-d-glucosamine => n,n'-diacetylchitobiose + phosphate