PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
4674626-0	1972	The formation of pyrrolid-2-one-5-carboxylic acid at the N-terminus of immunoglobulin G heavy chain.	Pyrrolidonecarboxylic Acid	17-49	immunoglobulin heavy variable V1-62	Mus musculus	71-87	
4674626-5	1972	(3) Further double-labelling experiments showed that 60-66% of the heavy chains of the completed intracellular IgG molecule began with pyrrolidonecarboxylic acid after both 1 and 5h of labelling.	Pyrrolidonecarboxylic Acid	135-161	immunoglobulin heavy variable V1-62	Mus musculus	111-114