PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
6093821-1	1984	The influence of Ca2+, Mg2+, Mn2+, Sr2+, La3+, Nd3+, Sm3+, Eu3+, and Gd3+ ions on the binding of labeled, stable enkephalin analogue, [3H-Tyr1, D-Ala2, D-Leu5]enkephalin, to opiate receptors of the rat brain membrane preparations has been investigated.	sm3+	53-57	proenkephalin	Rattus norvegicus	113-123