9 research outputs found

    Alignment of <i>A. locustae, T. hominis</i>, <i>S. guttatum</i> and <i>T. brucei</i> AOX sequences.

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    <p>The four-helix bundles are underlined with a solid line. The putative quinone binding site is underlined with a broken line. Conserved amino acid sites are marked with a star and semi conserved sites are marked with dots.</p

    Phylogenetic analyses of microsporidian AOX sequences.

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    <p><b>A.</b> Global MrBayes AOX phylogeny, posterior probabilities and PhyML bootstraps from an analysis of 500 bootstrapped datasets are shown above and below respectively, key and well supported clades (>70% Bootstrap). <b>B.</b> Short alignment PhyML phylogeny including the translated amplified sequences from all four microsporidia. Bootstrap support from 100 datasets is shown next to microporidian nodes. <b>C.</b> Microsporidian distribution of the alternative oxidase gene plotted onto a phylogeny of microsporidian SSU rDNA sequences. Scale bars in all trees indicate substitutions per site.</p

    Hypothetical scheme of function of the alternative oxidase in the microsporidian cell.

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    <p>Microsporidian cells are known to contain glycolytic enzymes, though no obvious mechanism exists for reoxidising NADH to NAD+. The glycerol-3-phosphate shuttle is encoded in many microsporidian genomes. If this shuttle is coupled to an alternative oxidase protein in the mitosome, it could potentially represent a mechanism for regenerating NAD+.</p

    Western blots of the membrane preparations from C41 <i>E. coli</i> strains expressing microsporidian AOX proteins.

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    <p>Lane 1 shows <i>A. locustae</i> rAOX and Lane 2 shows <i>T. hominis</i> rAOX. Lane 3 shows purified alternative oxidase protein from <i>Sauromatum guttatum</i>.</p
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