PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
21622030-7	2011	Moreover, the interaction depends on UBC13, an E2 ubiquitin ligase that catalyzes K63-linked poly-ubiquitin chain formation.	k63	82-85	ubiquitin conjugating enzyme E2 N	Homo sapiens	37-42