PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9801813-4 1998 In contrast to previously reported TSAs and dienophiles for the Diels-Alder reaction that are based upon maleimides, TSA 1 and dienophile 3 are based upon fumaramide. fumaramide 155-165 lymphocyte antigen 6 family member E Homo sapiens 117-122