Project description:To investigate the diversity of gene contents of Candida albicans strain by array-based comparative genomic hybridization (array CGH; aCGH). the srd1 null mutant Candida albicans strain CaLY202 was selected to carry out the comparative genomics microarray. Two-condition experiment, CaLY202 vs.SN152. Biological replicates: 2 control, 2 transfected, independently grown and harvested. One replicate per array.
Project description:To identify genes in that are misregulated in the grf10Δ mutant of Candida albicans in response to growth in high copper, we compared expression patterns of the grf10-null mutant relative to the isogenic WT in YPD medium supplemented with and without 12 mM CuSO4.
Project description:Transcriptional profiling of Candida albicans cells comparing control untreated C. albicans cells with sulfite-treated C. albicans cells. Sulfite is a toxic molecule that C. albicans encounters in its human host. Both wild type and ∆zcf2 mutant cells were used. The goal was to determine the effects of sulfite on C. albicans gene expression, and to determine which of the genes areZcf2-depedent.
Project description:The Candida albicans delta-doa1 mutant was investigated. This mutant shows lots of phenotypes. Doa1 protein has several WD 40 repeats. Keywords: mutant versus wildtype, comparative expression analysis
Project description:To elucidate the impact of IFU5 in Candida albicans, genome wide transcription profiling was performed in ifu5?/? mutant strain. Wild type and mutant cells were grown for 5 hours and RNA extracted from these cultures, followed by microarray profiling. Expression of six genes (EFG1, ALS3, SOD3, BMT4, COX2, NAD1) was validated by qPCR.
Project description:Two-component signal transduction pathways are one of the primary means by which microorganisms respond to environmental signals. These signaling cascades originated in prokaryotes and were inherited by eukaryotes via endosymbiotic lateral gene transfer from ancestral cyanobacteria. We report here that the nuclear genome of pathogenic fungus Candida albicans contains elements of a two-component signaling pathway that seem to be targeted to the mitochondria. In C. albicans two-component response regulator protein Srr1(Stress Response Regulator) contains a mitochondrial targeting sequence at the N-terminus, and fluorescence microscopy reveals mitochondrial localization of GFP-tagged Srr1p. Moreover, phylogenetic analysis indicates that C. albicans Srr1p is more closely related to histidine kinases and response regulators found in marine bacteria compared to other two-component proteins present in the fungi. These data suggest conservation of this protein during the evolutionary transition from endosymbiont to a subcellular organelle. We used microarray analysis to determine if the phenotypes observed with srr1M-NM-^T/M-NM-^T mutant could be correlated with gene transcriptional changes. Expression of mitochondrial genes was altered in the srr1M-NM-^T/M-NM-^T null mutant in comparison to the wild type. Furthermore, apoptosis significantly increased in the srr1M-NM-^T/M-NM-^T mutant strain compared to wild type, suggesting activation of mitochondria dependent apoptotic cell death pathway in the srr1M-NM-^T/M-NM-^T mutant. This study shows for the first time that a lower eukaryote like C. albicans possesses a two-component response regulator protein that has survived in mitochondria and regulates a subset of genes whose functions are associated with oxidative stress response and programmed cell death (apoptosis). Candida albicans wildtype or srr1 null cells were left untreated or were treated with either 8mM H2O2 for one hour prior to RNA isolation.