label: 3-O-(N-acetyl-beta-D-glucosaminyl)-L-threonyl-[protein] + H2O => L-threonyl-[protein] + N-acetyl-D-glucosamine
label_lc: 3-o-(n-acetyl-beta-d-glucosaminyl)-l-threonyl-[protein] + h2o => l-threonyl-[protein] + n-acetyl-d-glucosamine