Title : [Cytochrome b-559 photooxidation in the presence of carbonyl cyanide p-trifluorometh-oxyphenylhydrazone and 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone or p-benzoquinone in three non-photosynthetic mutants of Chlamydomonas reinhardti (author's transl)].

Pub. Date : 1975 Apr 14

PMID : 1125287






9 Functional Relationships(s)
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1 [Cytochrome b-559 photooxidation in the presence of carbonyl cyanide p-trifluorometh-oxyphenylhydrazone and 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone or p-benzoquinone in three non-photosynthetic mutants of Chlamydomonas reinhardti (author"s transl)]. Carbonyl Cyanide p-Trifluoromethoxyphenylhydrazone mitochondrially encoded cytochrome b Homo sapiens
2 [Cytochrome b-559 photooxidation in the presence of carbonyl cyanide p-trifluorometh-oxyphenylhydrazone and 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone or p-benzoquinone in three non-photosynthetic mutants of Chlamydomonas reinhardti (author"s transl)]. Dibromothymoquinone mitochondrially encoded cytochrome b Homo sapiens
3 [Cytochrome b-559 photooxidation in the presence of carbonyl cyanide p-trifluorometh-oxyphenylhydrazone and 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone or p-benzoquinone in three non-photosynthetic mutants of Chlamydomonas reinhardti (author"s transl)]. quinone mitochondrially encoded cytochrome b Homo sapiens
4 Studies of absorbance related to the cytochrome b-559 photooxidation induced by FCCP, with and without addition of 3-p-chlorophenyl-1, 1-dimethylurea (CMU), DBMIB or p-benzoquinone, in whole cells and in chloroplast fragments of Chlamydomonas reinhardti, were carried out. Carbonyl Cyanide p-Trifluoromethoxyphenylhydrazone mitochondrially encoded cytochrome b Homo sapiens
5 In the presence of FCCP, whole cells and chloroplast fragments of the four strains showed a System II-dependent photooxidation of cytochrome b-559. Carbonyl Cyanide p-Trifluoromethoxyphenylhydrazone mitochondrially encoded cytochrome b Homo sapiens
6 In chloroplast fragments, cytochrome b-559 photooxidation was also inhibited by an excess of FCCP; it was recovered, likewise, by addition of DBMIB. Carbonyl Cyanide p-Trifluoromethoxyphenylhydrazone mitochondrially encoded cytochrome b Homo sapiens
7 In chloroplast fragments, cytochrome b-559 photooxidation was also inhibited by an excess of FCCP; it was recovered, likewise, by addition of DBMIB. Dibromothymoquinone mitochondrially encoded cytochrome b Homo sapiens
8 In whole cells, the highest measured redox changes were: 1 mu mol oxidized cytochrome b-559 per 1 mmol chlorophyll, corresponding approximately to about one seventh (wild type, Fl5) or one fifth (Fl 9, Fl 15) of the total amount of this cytochrome. Chlorophyll mitochondrially encoded cytochrome b Homo sapiens
9 A high-potential form of cytochrome b-559, hydroquinone-reducible, was involved in these two kinds of photooxidation. hydroquinone mitochondrially encoded cytochrome b Homo sapiens