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Defining the pathogenesis of the human Atp12p W94R mutation using a Saccharomyces cerevisiae yeast model.
Meulemans, Ann; Seneca, Sara; Pribyl, Thomas; Smet, Joel; Alderweirldt, Valerie; Waeytens, Anouk; Lissens, Willy; Van Coster, Rudy; De Meirleir, Linda; di Rago, Jean-Paul; Gatti, Domenico L; Ackerman, Sharon H.
Afiliación
  • Meulemans A; From the Center for Genetics, UZ Brussel, Vrije Universiteit Brussel, Brussels B-1050, Belgium.
  • Seneca S; From the Center for Genetics, UZ Brussel, Vrije Universiteit Brussel, Brussels B-1050, Belgium.
  • Pribyl T; the Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, Michigan 48201.
  • Smet J; the Departments of Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent 9000, Belgium.
  • Alderweirldt V; From the Center for Genetics, UZ Brussel, Vrije Universiteit Brussel, Brussels B-1050, Belgium.
  • Waeytens A; Departments of Pathology, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent 9000, Belgium, and.
  • Lissens W; From the Center for Genetics, UZ Brussel, Vrije Universiteit Brussel, Brussels B-1050, Belgium.
  • Van Coster R; the Departments of Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent 9000, Belgium.
  • De Meirleir L; Department of Pediatric Neurology, UZ Brussel, Vrije Universiteit Brussel, Brussels B-1050, Belgium.
  • di Rago JP; the Institut de Biochimie et Génétique Cellulaires CNRS/Bordeaux 2 University, Bordeaux Cedex 33077, France.
  • Gatti DL; the Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, Michigan 48201.
  • Ackerman SH; the Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, Michigan 48201. Electronic address: sackerm@med.wayne.edu.
J Biol Chem ; 285(6): 4099-4109, 2010 Feb 05.
Article en En | MEDLINE | ID: mdl-19933271
Studies in yeast have shown that a deficiency in Atp12p prevents assembly of the extrinsic domain (F(1)) of complex V and renders cells unable to make ATP through oxidative phosphorylation. De Meirleir et al. (De Meirleir, L., Seneca, S., Lissens, W., De Clercq, I., Eyskens, F., Gerlo, E., Smet, J., and Van Coster, R. (2004) J. Med. Genet. 41, 120-124) have reported that a homozygous missense mutation in the gene for human Atp12p (HuAtp12p), which replaces Trp-94 with Arg, was linked to the death of a 14-month-old patient. We have investigated the impact of the pathogenic W94R mutation on Atp12p structure/function. Plasmid-borne wild type human Atp12p rescues the respiratory defect of a yeast ATP12 deletion mutant (Deltaatp12). The W94R mutation alters the protein at the most highly conserved position in the Pfam sequence and renders HuAtp12p insoluble in the background of Deltaatp12. In contrast, the yeast protein harboring the corresponding mutation, ScAtp12p(W103R), is soluble in the background of Deltaatp12 but not in the background of Deltaatp12Deltafmc1, a strain that also lacks Fmc1p. Fmc1p is a yeast mitochondrial protein not found in higher eukaryotes. Tryptophan 94 (human) or 103 (yeast) is located in a positively charged region of Atp12p, and hence its mutation to arginine does not alter significantly the electrostatic properties of the protein. Instead, we provide evidence that the primary effect of the substitution is on the dynamic properties of Atp12p.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Saccharomyces cerevisiae / ATPasas de Translocación de Protón / Chaperonas Moleculares / Chaperoninas / Proteínas de Saccharomyces cerevisiae / Mutación Tipo de estudio: Etiology_studies Límite: Humans Idioma: En Revista: J Biol Chem Año: 2010 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Estados Unidos
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Saccharomyces cerevisiae / ATPasas de Translocación de Protón / Chaperonas Moleculares / Chaperoninas / Proteínas de Saccharomyces cerevisiae / Mutación Tipo de estudio: Etiology_studies Límite: Humans Idioma: En Revista: J Biol Chem Año: 2010 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Estados Unidos