PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21350744-1 2011 Pyrene excimer fluorescence is efficiently regulated through formation of pi-stacked aggregates between dialkynylpyrene (Y) and perylenediimide (E) residues located in the stem region of a molecular beacon (MB). perylenediimide 128-143 ubiquitin like 5 Homo sapiens 199-205