PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
21731109-7	2008	Redox potentials for structurally-related Co(II) complexes are shown to be cathodically-shifted relative to their Fe(II) analogues, making them ineffective reducing agents for substrates such as superoxide.	Superoxides	195-205	mitochondrially encoded cytochrome c oxidase II	Homo sapiens	42-48