PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3021183-3 1986 Optimal PAF binding required buffers containing 3 to 10 mm KCl and either 5 to 10 mM MgCl2 or 5 to 10 mM CaCl2. Magnesium Chloride 85-90 PCNA clamp associated factor Homo sapiens 8-11