PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
15003527-5	2004	The recombinant human 6x His-PC isolated with a purity of approximately 50% using a Ni-NTA agarose column was found to have the specific activity of 7U/mg, which was similar to that produced from a 293T stable line [Biochem.	Histidine	25-28	pyruvate carboxylase	Homo sapiens	29-31	
22883960-7	2012	In PCb, the histidine remains covalently bound to Cu(I) and may adopt a doubly protonated state at low pH.	Histidine	12-21	pyruvate carboxylase	Homo sapiens	3-6