PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
1657965-8	1991	In photo-affinity labeling experiments using myometrial membranes obtained from guinea pigs during late pregnancy, the 125I-labeled photoreactive antagonist specifically labeled a protein with an apparent molecular mass of between 68 and 80 kDa: the labeling of this protein was completely suppressed by a 100-fold molar excess of oxytocin and oxytocin receptor-specific agonists, but not by vasopressin analogues specific for V1 or V2 receptors or by other peptide hormones.	Iodine-125	119-123	oxytocin receptor	Cavia porcellus	344-361