PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 25838544-4 2015 In TSA, a 13-nucleotide (nt) core motif is conserved across Drosophila species and is essential and sufficient for trans-splicing, which binds U1 small nuclear RNP (snRNP) through strong base-pairing with U1 snRNA. 13-nucleotide 10-23 small ribonucleoprotein particle U1 subunit 70K Drosophila melanogaster 165-170