PMID-sentid	Pub_year	Sent_text	compound_name	comp_offset	prot_official_name	organism	prot_offset
2556707-1	1989	Retinal rod cGMP phosphodiesterase (3",5"-cyclic-GMP phosphodiesterase; EC 3.1.4.35; PDE), a key regulatory enzyme involved in visual excitation, is one of several outer segment membrane proteins that are carboxyl methylated in the presence of the methyl donor S-adenosyl-L-[3H-methyl]methionine.	s-adenosyl-l-[3h-methyl]methionine	261-295	aldehyde dehydrogenase 7 family member A1	Homo sapiens	85-88