PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
5289931-0	1971	Synthesis of an actinomycin analog with substituted lactone oxygens (1",1"-bis(L-,-diaminopropionic acid))-actinomycin C (C 1).	Lactones	52-59	heterogeneous nuclear ribonucleoprotein C	Homo sapiens	122-125	
11805079-6	2002	In the case of a dL residue, attack on the lactone C-1 by lysine 72 proceeds more slowly and evidently produces an amide linkage, which resists further processing.	Lactones	43-50	heterogeneous nuclear ribonucleoprotein C	Homo sapiens	51-54