PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
21746848-2	2011	NMDA receptors are obligate heterotetramers typically composed of glycine-binding GluN1 and glutamate-binding GluN2 subunits that gate in a concerted fashion, requiring all four ligands to bind for subsequent opening of the channel pore.	Glycine	66-73	glutamate ionotropic receptor NMDA type subunit 1	Homo sapiens	82-87