PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
19012368-7	2008	For spacer lengths n = 4 and 6, the major S N2 product shifts from attack at methylene to methyl on the quaternary ammonium group.	quaternary ammonium	104-123	solute carrier family 38 member 5	Homo sapiens	42-46