PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19162536-5 2009 These experiments confirm that anthracene could combine with the pterin ring of folic acid through pi-pi donor-acceptor interaction (EDA) and induce the protonation process in FA upon strengthening electron accepting ability of PT ring. Pterins 65-71 ectodysplasin A Homo sapiens 133-136