PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
32942970-8	2021	According to the structural features, the natural COX-2 inhibitors were mainly divided into the following categories: natural phenols, flavonoids, stilbenes, terpenoids, quinones and alkaloids.	Quinones	170-178	mitochondrially encoded cytochrome c oxidase II	Homo sapiens	50-55	
15134917-2	2004	In 10% methanol/water, the one-electron reduction of quinones L1 and L2 to the corresponding semiquinones is shifted to more positive potentials upon addition of one equivalent of Zn(II), Ni(II), Co(II) or Cd(II) and is consistent with formation of a 1:1 complex involving the quinone(N) and adjacent quinone(O).	Quinones	53-61	mitochondrially encoded cytochrome c oxidase II	Homo sapiens	196-202	
21714592-5	2011	The classification in this review includes COX-2 inhibitors based on five- and six-membered heterocycles, benzoheterocycles (e.g., benzopyrans, benzopyranones, indoles and quinolines), quinones, chalcones, natural products and miscellaneous.	Quinones	185-193	mitochondrially encoded cytochrome c oxidase II	Homo sapiens	43-48