PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
7939659-3	1994	Variants of RNase A were produced in which the catalytic histidines at positions 12 and 119 were substituted with the unnatural amino acid 4-fluorohistidine, which has a pKa of 3.5 compared to 6.8 for histidine.	Histidine	57-67	ribonuclease A family member 1, pancreatic	Homo sapiens	12-19	
7939659-3	1994	Variants of RNase A were produced in which the catalytic histidines at positions 12 and 119 were substituted with the unnatural amino acid 4-fluorohistidine, which has a pKa of 3.5 compared to 6.8 for histidine.	Histidine	57-66	ribonuclease A family member 1, pancreatic	Homo sapiens	12-19