title: SAGA complex and Gcn5 are necessary for respiration in budding yeast.
abstract: In budding yeast, growth through fermentation and/or respiration is dependent on the type of carbon source present in the medium. SAGA complex is the main acetylation complex and is required, together with Rtg factors, for nucleus-mitochondria communication and transcriptional activation of specific nuclear genes. Even though acetylation is necessary for mitochondria activity and respiratory pathways the direct role of histone acetyltransferases and SAGA complex has never been investigated directly. In this study we demonstrate, for the first time, that Gcn5 and SAGA are needed for respiratory metabolism and oxygen consumption. According to a central role for acetylation in respiration we find that the Gcn5 inhibitor CPTH2 had higher efficacy on cells grown in glycerol containing media. We also demonstrated that the opposing activities of Gcn5 and Hda1 modify selectively H3-AcK18 and are essential for respiration. Taken together our results suggest a novel paradigm coupling acetyltransferase activity to respiratory metabolism. Correspondingly we propose the selective utilization of KAT inhibitor CPTH2, combined to the modulation of the respiratory metabolism of the cell, as a promising novel tool of intervention in cancer cells.
authors.affiliation: Pasteur Institute-Cenci Bolognetti Foundation, Sapienza University of Rome, P.le A. Moro 5, Rome, Italy; Dept. of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, P.le A. Moro 5, Rome, Italy.
authors.forename: Claudia
authors.initials: C
authors.lastname: Canzonetta
authors.affiliation: Dept. of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, P.le A. Moro 5, Rome, Italy.
authors.forename: Manuela
authors.initials: M
authors.lastname: Leo
authors.affiliation: Dept. of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, P.le A. Moro 5, Rome, Italy; Institute of Molecular Biology and Pathology-CNR, Sapienza University of Rome, P.le A. Moro 5, Rome, Italy.
authors.forename: Salvatore Rocco
authors.initials: SR
authors.lastname: Guarino
authors.affiliation: Pasteur Institute-Cenci Bolognetti Foundation, Sapienza University of Rome, P.le A. Moro 5, Rome, Italy; Dept. of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, P.le A. Moro 5, Rome, Italy.
authors.forename: Arianna
authors.initials: A
authors.lastname: Montanari
authors.affiliation: Dept. of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, P.le A. Moro 5, Rome, Italy.
authors.forename: Silvia
authors.initials: S
authors.lastname: Francisci
authors.affiliation: Institute of Molecular Biology and Pathology-CNR, Sapienza University of Rome, P.le A. Moro 5, Rome, Italy. Electronic address: patrizia.filetici@uniroma1.it.
authors.forename: Patrizia
authors.initials: P
authors.lastname: Filetici
mesh_terms: D000107:Acetylation; D002467:Cell Nucleus / Q000378:metabolism; D019069:Cell Respiration / Q000187:drug effects / Q000235:genetics*; D003470:Culture Media / Q000737:chemistry; D005990:Glycerol / Q000378:metabolism / Q000494:pharmacology; D051548:Histone Acetyltransferases / Q000235:genetics* / Q000378:metabolism; D006655:Histone Deacetylases / Q000235:genetics / Q000378:metabolism; D006657:Histones / Q000235:genetics / Q000378:metabolism; D008928:Mitochondria / Q000378:metabolism; D010101:Oxygen Consumption / Q000187:drug effects / Q000235:genetics; D012441:Saccharomyces cerevisiae / Q000187:drug effects / Q000235:genetics* / Q000378:metabolism; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics* / Q000378:metabolism; D015534:Trans-Activators / Q000235:genetics* / Q000378:metabolism; D015533:Transcriptional Activation / Q000187:drug effects; D000099224:p300-CBP-Associated Factor
chemical_list: D003470:Culture Media; D005990:Glycerol; D051548:Histone Acetyltransferases; D006655:Histone Deacetylases; D006657:Histones; D029701:Saccharomyces cerevisiae Proteins; D015534:Trans-Activators; C507785:SAGA complex, S cerevisiae; C501392:GCN5 protein, S cerevisiae; D000099224:p300-CBP-Associated Factor; C499673:HDA1 protein, S cerevisiae
keywords: Acetylation; Carbon source; Gcn5; Hda1; Respiration; SAGA complex; Yeast