PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20657584-2 2010 Here we describe a powerful method to visualize the O-GlcNAc-modified protein subpopulation using resolvable polyethylene glycol mass tags. Polyethylene Glycols 109-128 O-linked N-acetylglucosamine (GlcNAc) transferase Homo sapiens 52-60