PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
15709769-8	2005	Furthermore, we found that Ras was capable of binding pyrophosphate (PPi) with a dissociation constant of 26 microM and that PPi and GMP, but neither alone, synergistically potentiated the GRF1-stimulated GDP dissociation from Ras.	Guanosine Diphosphate	205-208	5'-nucleotidase, cytosolic II	Homo sapiens	133-136