PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
12024015-9	2002	In one of these, histone H2B is the likely target for ubiquitination by Rad6, since a strain expressing histone H2B with the principal ubiquitination site converted from lysine to arginine shows a fivefold relief of repression.	Arginine	180-188	E2 ubiquitin-conjugating protein RAD6	Saccharomyces cerevisiae S288C	72-76