PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
11677234-2	2002	Prostaglandin synthesis by cyclooxygenases-1 and -2 (COX-1 and COX-2) involves an initial oxygenation of arachidonic acid at C-11, followed by endoperoxide and cyclopentane ring formation, and then a second reaction with molecular oxygen in the S configuration at C-15.	Cyclopentanes	160-172	prostaglandin-endoperoxide synthase 2	Homo sapiens	27-51