PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
8570639-4	1996	Although the B2 site that preferentially binds purines on the 3" side of B1 is also weak, its associated phosphate subsites make substantial contributions: both 3",5"-ADP and 5"-ADP have Ki values 6-fold lower than for 5"-AMP, and adding a 3"-phosphate to the substrate CpA increases Kcat/Km by 9-fold.	adenosine 5'-O-(2-thiodiphosphate)	164-170	carboxypeptidase A1	Homo sapiens	270-273