RT Journal A1 The Génolevures Consortium A1 Souciet, Jean-Luc A1 Dujon, Bernard A1 Gaillardin, Claude A1 Johnston, Mark A1 Baret, Philippe V. A1 Cliften, Paul A1 Sherman, David J. A1 Weissenbach, Jean A1 Westhof, Eric A1 Wincker, Patrick A1 Jubin, Claire A1 Poulain, Julie A1 Barbe, Valérie A1 Ségurens, Béatrice A1 Artiguenave, François A1 Anthouard, Véronique A1 Vacherie, Benoit A1 Val, Marie-Eve A1 Fulton, Robert S. A1 Minx, Patrick A1 Wilson, Richard A1 Durrens, Pascal A1 Jean, Géraldine A1 Marck, Christian A1 Martin, Tiphaine A1 Nikolski, Macha A1 Rolland, Thomas A1 Seret, Marie-Line A1 Casarégola, Serge A1 Despons, Laurence A1 Fairhead, Cécile A1 Fischer, Gilles A1 Lafontaine, Ingrid A1 Leh, Véronique A1 Lemaire, Marc A1 de Montigny, Jacky A1 Neuvéglise, Cécile A1 Thierry, Agnès A1 Blanc-Lenfle, Isabelle A1 Bleykasten, Claudine A1 Diffels, Julie A1 Fritsch, Emilie A1 Frangeul, Lionel A1 Goëffon, Adrien A1 Jauniaux, Nicolas A1 Kachouri-Lafond, Rym A1 Payen, Célia A1 Potier, Serge A1 Pribylova, Lenka A1 Ozanne, Christophe A1 Richard, Guy-Franck A1 Sacerdot, Christine A1 Straub, Marie-Laure A1 Talla, Emmanuel T1 Comparative genomics of protoploid Saccharomycetaceae JF Genome Research JO Genome Research YR 2009 FD October 01 VO 19 IS 10 SP 1696 OP 1709 DO 10.1101/gr.091546.109 UL http://genome.cshlp.org/content/19/10/1696.abstract AB Our knowledge of yeast genomes remains largely dominated by the extensive studies on Saccharomyces cerevisiae and the consequences of its ancestral duplication, leaving the evolution of the entire class of hemiascomycetes only partly explored. We concentrate here on five species of Saccharomycetaceae, a large subdivision of hemiascomycetes, that we call “protoploid” because they diverged from the S. cerevisiae lineage prior to its genome duplication. We determined the complete genome sequences of three of these species: Kluyveromyces (Lachancea) thermotolerans and Saccharomyces (Lachancea) kluyveri (two members of the newly described Lachancea clade), and Zygosaccharomyces rouxii. We included in our comparisons the previously available sequences of Kluyveromyces lactis and Ashbya (Eremothecium) gossypii. Despite their broad evolutionary range and significant individual variations in each lineage, the five protoploid Saccharomycetaceae share a core repertoire of approximately 3300 protein families and a high degree of conserved synteny. Synteny blocks were used to define gene orthology and to infer ancestors. Far from representing minimal genomes without redundancy, the five protoploid yeasts contain numerous copies of paralogous genes, either dispersed or in tandem arrays, that, altogether, constitute a third of each genome. Ancient, conserved paralogs as well as novel, lineage-specific paralogs were identified.