PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21467632-5 2011 2-O-Sulfate residues in heparin were essential for the binding of rGST-NKG2A and rGST-NKG2C. 2-o-sulfate 0-11 killer cell lectin like receptor C2 Homo sapiens 86-91