PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
2590165-12	1989	Assuming that there were two Tb3+-binding sites on the toxin molecule, at pH 7.6 the association constants of the high-affinity and the low-affinity sites were determined to be 3.82 x 10(3) M-1 and 2.85 x 10(2) M-1 respectively.	tb3+	29-33	cholinergic receptor muscarinic 1	Homo sapiens	190-199