PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
22087249-4	2011	S97 is conserved across species and restricted to the catalytic domain of Cdc34/Ubc7-like E2s.	Estradiol	90-93	ubiquitin conjugating enzyme E2 G2	Homo sapiens	80-84	
24366945-5	2014	In addition to E2 dimerization, we show that a highly conserved arginine residue in the donor Ube2g2 senses the presence of an aspartate in the acceptor ubiquitin to position only Lys48 of ubiquitin in proximity to the donor E2 active site.	Estradiol	15-17	ubiquitin conjugating enzyme E2 G2	Homo sapiens	94-100