PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
4140510-4	1974	(b) It migrates with actin on sodium dodecyl sulfate-polyacrylamide gel electrophoresis, having a characteristic molecular weight of 42,000.	polyacrylamide	53-67	actin epsilon 1	Bos taurus	21-26