PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 18522938-4 2008 Here we show that superoxide formation at the ubiquinol oxidation center of the membrane-bound or purified cytochrome bc(1) complex is stimulated by the presence of oxidized ubiquinone indicating that in a reverse reaction the electron is transferred onto oxygen from reduced cytochrome b(L) via ubiquinone rather than during the forward ubiquinone cycle reaction. Ubiquinone 174-184 mitochondrially encoded cytochrome b Homo sapiens 107-119 18522938-4 2008 Here we show that superoxide formation at the ubiquinol oxidation center of the membrane-bound or purified cytochrome bc(1) complex is stimulated by the presence of oxidized ubiquinone indicating that in a reverse reaction the electron is transferred onto oxygen from reduced cytochrome b(L) via ubiquinone rather than during the forward ubiquinone cycle reaction. Ubiquinone 296-306 mitochondrially encoded cytochrome b Homo sapiens 107-119 18522938-4 2008 Here we show that superoxide formation at the ubiquinol oxidation center of the membrane-bound or purified cytochrome bc(1) complex is stimulated by the presence of oxidized ubiquinone indicating that in a reverse reaction the electron is transferred onto oxygen from reduced cytochrome b(L) via ubiquinone rather than during the forward ubiquinone cycle reaction. Ubiquinone 296-306 mitochondrially encoded cytochrome b Homo sapiens 107-119