1993
DOI: 10.1016/0014-5793(93)80414-p
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Insight into the interactions between subunits I and II of the cytochrome c oxidase of the yeast Saccharomyces cerevisiae by means of extragenic complementation

Abstract: In yeast, revertants were selected from two respiratory deficient mutants carrying mutations in the catalytic subunits of cytochrome oxidase. From a mutant carrying a double mutation in the vicinity of the copper binding pocket in subunit II, two genetically independent revertants were obtained in which the same extragenic reversion mutation was observed, A147V, in the putative helix 4 of subunit I. A comparison with revertants derived from the second deficient mutant, carrying the deficiency mutation, S14OL, … Show more

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Cited by 8 publications
(2 citation statements)
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“…This distribution of genes suggests, in accordance with the endosymbiont theory, a bacterial origin of these three subunits I, II, and III. In fact, all studied cytochrome c oxidases [288] show homologies in these three subunits. As in ubiquinone oxidase, the functional unit is formed by subunits I and II [279,285].…”
Section: Cytochrome Oxidosesmentioning
confidence: 97%
See 1 more Smart Citation
“…This distribution of genes suggests, in accordance with the endosymbiont theory, a bacterial origin of these three subunits I, II, and III. In fact, all studied cytochrome c oxidases [288] show homologies in these three subunits. As in ubiquinone oxidase, the functional unit is formed by subunits I and II [279,285].…”
Section: Cytochrome Oxidosesmentioning
confidence: 97%
“…Cytochrome c Oxidase Cytochrome c oxidases (EC 1.9.3.1) are a heterogenous class of enzymes,which, depending upon the organism of origin, consist of 3 (in prokaryotes [288] including Paracoccus denitrificans [279]) to 13 (mammalian) [49] different subunits. In mammalians, subunits IV to XIII are encoded autosomally, whereas subunits I, II, and III are encoded by mitochondrial DNA [26,283,288]. This distribution of genes suggests, in accordance with the endosymbiont theory, a bacterial origin of these three subunits I, II, and III.…”
Section: Cytochrome Oxidosesmentioning
confidence: 99%