label: O-(N-acetyl-alpha-D-glucosaminyl)-L-tyrosyl-[protein] + UDP + H(+) => L-tyrosyl-[protein] + UDP-N-acetyl-alpha-D-glucosamine
label_lc: o-(n-acetyl-alpha-d-glucosaminyl)-l-tyrosyl-[protein] + udp + h(+) => l-tyrosyl-[protein] + udp-n-acetyl-alpha-d-glucosamine