PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
21772997-4	2011	Binding studies show that RPA-C binds pyrimidine- and purine-rich sequences similarly.	purine	54-60	replication protein A1	Homo sapiens	26-29	
19187036-4	2009	Moreover, hRPA binds to a 26-mer purine-rich quadruplex-forming sequence with an affinity indistinguishable from that for binding to the complementary pyrimidine-rich sequence.	purine	33-39	replication protein A1	Homo sapiens	10-14	
15938633-6	2005	However, RPA hyperphosphorylation results in a decreased affinity for purine-rich ssDNA and duplex DNA substrates.	purine	70-76	replication protein A1	Homo sapiens	9-12	
11009611-6	2000	Use of fork and overhang substrates containing 8 nt pyrimidine or purine arms demonstrates that hRPA binding to DNA involves a particular molecular polarity in which initial hRPA binding occurs on the 5" side of a ssDNA substrate, and then extends in the 3" direction to create a stably bound hRPA.	purine	66-72	replication protein A1	Homo sapiens	96-100