PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 33925313-3 2021 O-GlcNAcylation is essential for epigenetic regulation of gene expression through its action on Polycomb and Trithorax and COMPASS complexes. o-glcnacylation 0-15 Polycomb Drosophila melanogaster 96-104