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Project description:RNAi, a gene-silencing pathway triggered by double-stranded RNA, is conserved in diverse eukaryotic species but has been lost in the model budding yeast, Saccharomyces cerevisiae. We report that RNAi is present in other budding-yeast species, including Saccharomyces castellii and Candida albicans. These species use noncanonical Dicer proteins to generate siRNAs, which mostly correspond to transposable elements and YM-BM-4 subtelomeric repeats. In S. castellii, RNAi mutants are viable but have excess YM-BM-4 mRNA levels. In S. cerevisiae, introducing Dicer and Argonaute of S. castellii restores RNAi, and the reconstituted pathway silences endogenous retrotransposons. These results identify a novel class of Dicer proteins, bring the tool of RNAi to the study of budding yeasts, and bring the tools of budding yeast to the study of RNAi. Employ high-throughput sequencing of endogenous small RNAs from the budding yeasts Saccharomyces castellii, Kluyveromyces polysporus, Candida albicans, Saccharomyces cerevisiae, and Saccharomyces bayanus.
2009-09-10 | E-GEOD-17871 | biostudies-arrayexpress
Project description:RNAi, a gene-silencing pathway triggered by double-stranded RNA, is conserved in diverse eukaryotic species but has been lost in the model budding yeast, Saccharomyces cerevisiae. We report that RNAi is present in other budding-yeast species, including Saccharomyces castellii and Candida albicans. These species use noncanonical Dicer proteins to generate siRNAs, which mostly correspond to transposable elements and Y´ subtelomeric repeats. In S. castellii, RNAi mutants are viable but have excess Y´ mRNA levels. In S. cerevisiae, introducing Dicer and Argonaute of S. castellii restores RNAi, and the reconstituted pathway silences endogenous retrotransposons. These results identify a novel class of Dicer proteins, bring the tool of RNAi to the study of budding yeasts, and bring the tools of budding yeast to the study of RNAi.
2009-09-10 | GSE17871 | GEO
Project description:RNAi, a gene-silencing pathway triggered by double-stranded RNA, is conserved in diverse eukaryotic species but has been lost in the model budding yeast, Saccharomyces cerevisiae. We report that RNAi is present in other budding-yeast species, including Saccharomyces castellii and Candida albicans. These species use noncanonical Dicer proteins to generate siRNAs, which mostly correspond to transposable elements and YM-BM-4 subtelomeric repeats. In S. castellii, RNAi mutants are viable but have excess YM-BM-4 mRNA levels. In S. cerevisiae, introducing Dicer and Argonaute of S. castellii restores RNAi, and the reconstituted pathway silences endogenous retrotransposons. These results identify a novel class of Dicer proteins, bring the tool of RNAi to the study of budding yeasts, and bring the tools of budding yeast to the study of RNAi. Examine mRNA abundance in two biological replicates of wild-type (DPB005) and RNAi deletion strains (DPB007, DPB009) of S. castellii.
2009-09-10 | E-GEOD-17870 | biostudies-arrayexpress
Project description:RNAi, a gene-silencing pathway triggered by double-stranded RNA, is conserved in diverse eukaryotic species but has been lost in the model budding yeast, Saccharomyces cerevisiae. We report that RNAi is present in other budding-yeast species, including Saccharomyces castellii and Candida albicans. These species use noncanonical Dicer proteins to generate siRNAs, which mostly correspond to transposable elements and Y´ subtelomeric repeats. In S. castellii, RNAi mutants are viable but have excess Y´ mRNA levels. In S. cerevisiae, introducing Dicer and Argonaute of S. castellii restores RNAi, and the reconstituted pathway silences endogenous retrotransposons. These results identify a novel class of Dicer proteins, bring the tool of RNAi to the study of budding yeasts, and bring the tools of budding yeast to the study of RNAi.
2009-09-10 | GSE17870 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE22191: Absolute expression level of Debaryomyces hansenii genes GSE22192: Absolute expression level of Yarrowia lipolytica genes GSE22193: Absolute expression level of Saccharomyces paradoxus genes GSE22194: Absolute expression level of Candida glabrata genes GSE22197: Absolute expression level of Candida albicans genes GSE22198: Absolute expression level of Kluyveromyces lactis genes GSE22199: Absolute expression level of Kluyveromyces waltii genes GSE22200: Absolute expression level of Saccharomyces castellii genes GSE22201: Absolute expression level of Saccharomyces mikatae genes GSE22202: Absolute expression level of Saccharomyces kluyveryii genes GSE22204: Absolute expression level of Saccharomyces cerevisiae genes GSE22205: Absolute expression level of Saccharomyces bayanus genes GSE22211: Genome-wide nucleosome position data for 12 yeast species Refer to individual Series
2010-07-05 | E-GEOD-21960 | biostudies-arrayexpress
Project description:Unusually among fungi, Saccharomyces cerevisiae is able to grow in environments containing almost no oxygen. A major feature of its response to hypoxia is a transition in expression from aerobic to hypoxic genes, which often code for duplicated isoforms of the same protein. In aerobic conditions, expression of the hypoxic gene set is repressed by the HMG domain protein Rox1. Here, we examined the evolution of ROX1 and related genes in the subphylum Saccharomycotina and find that a substantial reorganization of hypoxic gene regulation occurred during yeast evolution. S. cerevisiae lost ROX2, an ancient paralog of ROX1, which is almost universally present in other yeast species. ROX2 is orthologous to Candida albicans RFG1, a regulator of filamentous growth. Many yeasts, such as Candida glabrata, lack ROX1 and contain only ROX2. Others such as Naumovozyma castellii retain both genes. Although the ancestral function of ROX2 is uncertain, we find that it is not a regulator of hypoxic genes except in C. glabrata where it has taken over this function from the absent ROX1. We also find that N. castellii has a greatly attenuated transcriptional response to hypoxia as compared to other species, but that the ergosterol pathway which is normally induced by hypoxia can be induced by cobalt chloride stress in N. castellii.
2018-07-31 | GSE75235 | GEO
Project description:This is genome-scale metabolic model of Saccharomyces cerevisiae as the representative yeast species for the clade Saccharomycetaceae. This model was generated through homology search using a fungal pan-GEM largely based on Yeast8 for Saccharomyces cerevisiae, in addition to manual curation. This model has been produced by the Yeast-Species-GEMs project from Sysbio (www.sysbio.se). This is model version 1.0.0 accompanying the publication (DOI: 10.15252/msb.202110427), currently hosted on BioModels Database (http://www.ebi.ac.uk/biomodels/) and identified by MODEL2109130010. Further curations of this model will be tracked in the GitHub repository: https://github.com/SysBioChalmers/Yeast-Species-GEMs Models for species of the same clade includes: Ashbya aceri; Candida glabrata; Eremothecium coryli; Eremothecium cymbalariae; Eremothecium gossypii; Eremothecium sinecaudum; Kazachstania africana; Kazachstania naganishii; Kluyveromyces lactis; Kluyveromyces marxianus; Lachancea cidri; Lachancea dasiensis; Lachancea fantastica nom. nud.; Lachancea fermentati; Lachancea kluyveri; Lachancea lanzarotensis; Lachancea meyersii; Lachancea mirantina; Lachancea nothofagi; Lachancea quebecensis; Lachancea thermotolerans; Lachancea waltii; Nakaseomyces bacillisporus; Candida bracarensis; Candida castellii; Nakaseomyces delphensis; Candida nivariensis; Naumovozyma castellii; Naumovozyma dairenensis; Saccharomyces arboricola; Saccharomyces cerevisiae; Saccharomyces eubayanus; Saccharomyces kudriavzevii; Saccharomyces mikatae; Saccharomyces paradoxus; Saccharomyces uvarum; Tetrapisispora blattae; Tetrapisispora phaffii; Torulaspora delbrueckii; Vanderwaltozyma polyspora; Zygosaccharomyces bailii; Zygosaccharomyces rouxii; Kazachstania martiniae; Kazachstania unispora; Kazachstania turicensis; Kazachstania bromeliacearum; Kazachstania siamensis; Kazachstania taianensis; Kazachstania intestinalis; Kazachstania rosinii; Kazachstania transvaalensis; Kazachstania spencerorum; Kazachstania viticola; Kazachstania solicola; Kazachstania kunashirensis; Kazachstania aerobia; Kazachstania yakushimaensis; Torulaspora franciscae; Zygotorulaspora mrakii; Kluyveromyces aestuarii; Kluyveromyces dobzhanskii; Zygotorulaspora florentina; Zygosaccharomyces kombuchaensis; Zygosaccharomyces bisporus; Tetrapisispora fleetii; Tetrapisispora iriomotensis; Tetrapisispora namnaonensis; Torulaspora pretoriensis; Yueomyces sinensis; Torulaspora microellipsoides; Torulaspora maleeae. These models are available in the zip file. To cite BioModels, please use: V Chelliah et al; BioModels: ten-year anniversary. Nucleic Acids Res 2015; 43 (D1): D542-D548. To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to MIT License for more information.
FROG and miniFROG reports of the models for iPN730 (Lachancea kluyveri) and iSM996 (Kluyveromyces marxianus) also updated.
2024-10-15 | MODEL2109130010 | BioModels