PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
947547-2	1976	One product of the in vitro synthesis was dihydrofolate reductase (DHFR), as confirmed by methotrexate-substituted Sepharose affinity chromatography followed by SDS-polyacrylamide slab gel electrophoresis and autoradiography of the proteins labeled with 35S-methionine.	Sepharose	115-124	dihydrofolate reductase	Mesocricetus auratus	67-71