Ady2p is essential for the acetate permease activity in the yeast Saccharomyces cerevisiae

Authors

  • Sandra Paiva,

    1. Centro de Ciências do Ambiente, Departamento de Biologia, Universidade do Minho, 4710-057 Braga Codex, Portugal
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    • FD and SP contributed equally to this work.

  • Frederic Devaux,

    Corresponding author
    1. Laboratoire de Genetique Moleculaire, CNRS UMR8541, Ecole Normale Superieure, 46 Rue d'Ulm, 75230 Paris Cedex 05, France
    • Laboratoire de Génétique Moléculaire, Ecole Normale Supérieure, 46 Rue d'Ulm, 75230 Paris, Cedex 05, France.
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    • FD and SP contributed equally to this work.

  • Sonia Barbosa,

    1. Centro de Ciências do Ambiente, Departamento de Biologia, Universidade do Minho, 4710-057 Braga Codex, Portugal
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  • Claude Jacq,

    1. Laboratoire de Genetique Moleculaire, CNRS UMR8541, Ecole Normale Superieure, 46 Rue d'Ulm, 75230 Paris Cedex 05, France
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  • Margarida Casal

    1. Centro de Ciências do Ambiente, Departamento de Biologia, Universidade do Minho, 4710-057 Braga Codex, Portugal
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Abstract

To identify new genes involved in acetate uptake in Saccharomyces cerevisiae, an analysis of the gene expression profiles of cells shifted from glucose to acetic acid was performed. The gene expression reprogramming of yeast adapting to a poor non-fermentable carbon source was observed, including dramatic metabolic changes, global activation of translation machinery, mitochondria biogenesis and the induction of known or putative transporters. Among them, the gene ADY2/YCR010c was identified as a new key element for acetate transport, being homologous to the Yarrowia lipolytica GPR1 gene, which has a role in acetic acid sensitivity. Disruption of ADY2 in S. cerevisiae abolished the active transport of acetate. Microarray analyses of ady2Δ strains showed that this gene is not a critical regulator of acetate response and that its role is directly connected to acetate transport. Ady2p is predicted to be a membrane protein and is a valuable acetate transporter candidate. Copyright © 2004 John Wiley & Sons, Ltd.

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