PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16323906-4 2005 Both the syn and anti macrocycles show close contacts between the arsenic(III) ions and the aromatic carbons, consistent with intramolecular arsenic-pi interactions. Arsenic 66-73 synemin Homo sapiens 9-12