PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
15467839-4	2004	At early stages, IK,ACh is primarily formed by Kir3.1, while in late embryonic and adult cells, Kir3.4 is the predominant subunit.	Acetylcholine	20-23	potassium inwardly rectifying channel subfamily J member 3	Homo sapiens	47-53