PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
19496623-2	2009	In particular, Puralpha and Purbeta are postulated to repress transcription by forming helix-destabilizing complexes with the sense strand of an asymmetric polypurine-polypyrimidine tract containing a canonical MCAT enhancer motif in the 5" region of the gene.	polypyrimidine	167-181	purine rich element binding protein A	Homo sapiens	15-23