PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23297231-3 2013 Structural and complementary chemical analyses reveal an unexpected mechanism of inhibition involving covalent conjugation and CRM1-mediated hydrolysis of the natural products" lactone rings. Lactones 177-184 exportin 1 Homo sapiens 127-131