PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
15195307-13	2004	Initial biological testing of these analogues proved that the alpha,beta-unsaturated lactone, the C-11-hydroxy group and a fully deprotected phosphate moiety at C-9 are essential for the PP2A-inhibitory activity of cytostatin.	Phosphates	141-150	complement C9	Homo sapiens	161-164	
12127076-4	2002	The major in vivo phosphate acceptor is the alpha3/C9 subunit, being phosphorylated in serine, both in vivo and in vitro.	Phosphates	18-27	complement C9	Homo sapiens	44-53	
12127076-7	2002	The in vitro stoichiometry of phosphorylation of the alpha6/C2 and alpha3/C9 proteasome subunits by CK2 can be estimated as 0.7-0.8 and 0.4-0.5 mol of phosphate per mole of subunit, respectively.	Phosphates	151-160	complement C9	Homo sapiens	67-76