Transcription profiling by array of yeast haploid Sigma1278b strains to detect Yak1-regulated genes
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ABSTRACT: We determined and classified Yak1-regulated genes in haploid strains of the Sigma1278b genetic background under vegetative growth conditions. For this purpose, we measured transcriptional profiles of different haploid MATa yeast strains of the following genotypes:YAK1 (468=YHUM0468), yak1 (1313=YHUM1313), strain YHUM1313 (yak1) carrying a high copy plasmid with YAK1 (1313Yhc) and strain YHUM1313 (yak1) carrying a high copy plasmid with YAK1 K398R (1313KDhc). All strains were grown in duplicate in YNB medium supplemented with tryptophan at 30 degrees Celsius to an optical density of 1.0 before extraction of total RNA and transcriptional profiling.
Project description:We analyzed and classified Whi3-regulated and ploidy-regulated genes in haploid and diploid strains of the Sigma1278b genetic background under vegetative growth conditions.<br><br>For this purpose, we measured transcriptional profiles of two different haploid MATa and one diploid MATa/a yeast strains of the following genotypes: WHI3 strain (SS_YHUM468=YHUM0468), whi3 strain (SS_ySS137=YHUM1920) and whi3-delta/whi3-delta strain (SS_ySS137dipl=YHUM2152). All three strains were grown in duplicate in YNB medium supplemented with tryptophan and uracil at 30 degrees C to an optical density of 1.0 before extraction of total RNA and transcriptional profiling<br><br>
Project description:We determined and classified Whi3-regulated genes in haploid strains of the Sigma1278b genetic background under vegetative growth conditions. For this purpose, we measured transcriptional profiles of two different haploid MATa yeast strains of the following genotypes: WHI3 strain (468=YHUM0468) and whi3 strain (1105=YHUM1105).Both starins were grown in duplicate in YNB medium with tryptophan at 30°C to an optical density of 1.0 before extraction of total RNA and transcriptional profiling
Project description:We determined and classified Tec1-regulated genes in haploid strains of the Sigma1278b genetic background under vegetative growth conditions. For this purpose, we measured transcriptional profiles of five different haploid MATa yeast strains of the following relevant genotypes: (53 = YHUM1694) TEC1 STE12; (64 = YHUM1700) tec1? STE12; (66 = YHUM1701) tec1? ste12?; (10 = YHUM1676) (P)URA3-TEC1 ste12?; (42 = YHUM1642) (P)URA3-TEC1 1-280-STE12 1-688 tec1? ste12?. All strains were grown in duplicate in SC medium lacking leucine and histidine at 30 degree C to an optical density of 1.0 before extraction of total RNA and transcriptional profiling.
Project description:F. tularensis LVS carrying plasmid pFNLTP6-gro or pFNLTP-gro-0851 (expressing rpoH) were grown to mid exponential phase in Schaedler + vitamin K3 medium and RNA isolated.
Project description:We determined and classified Msa1-, Msa2- and Tec1-regulated genes in haploid strains of the Sigma1278b genetic background under vegetative growth conditions. For this purpose, we measured transcriptional profiles of five different haploid MATa yeast strains of the following relevant genotypes: (JvdF_94 = YHUM1694) control; (JvdF_64 = YHUM1864) msa1-delta; (JvdF_65 = YHUM1865) msa2-delta; (JvdF_19 = YHUM1900) msa1-delta msa2-delta; (JvdF_17 = YHUM1700) tec1-delta. All strains were grown in duplicate in SC medium lacking leucine and histidine at 30 degrees C to an optical density of 1.0 before extraction of total RNA and transcriptional profiling.
Project description:30h of growth biofilms in microfermentors were exposed to caspofungin 0.5 µg/ml, caspofungin 5 µg/ml, fluconazole 80 µg/ml or amphotericin B 8 µg/ml. Control and antifungal-exposed biofilms were recovered at t= 0, 30, 60 and 120 min post exposure to antifungal.
Project description:We investigated the effects of the ploidy on cellular response in strains carrying various types of gross chromosomal rearrangements. Fourteen mutated strains (6 haploid strains and 8 diploid strains) were compared to their associated parental strain (haploid or diploid parental strain). For each comparison, 2 microarray experiments implying biological replicates were performed.
Project description:Coordination of chromosome segregation and cytokinesis is crucial for efficient cell proliferation. In Bacillus subtilis the nucleoid occlusion protein Noc protects chromosomes by associating with the chromosome and preventing cell division in its vicinity. Using protein localization, ChAP-on-Chip and bioinformatics, we have identified a consensus Noc-binding DNA sequence (NBS), and show that Noc is targeted to about 70 discrete regions scattered around the chromosome, though absent from a large region around the replication terminus. Purified Noc bound specifically to an NBS in vitro. NBSs inserted near the replication terminus bound Noc-YFP and caused a delay in cell division. An autonomous plasmid carrying an NBS recruited Noc-YFP and conferred a severe Noc-dependent inhibition of cell division. This shows that Noc is a potent inhibitor of division but that its activity is strictly localized by interaction with NBS sites in vivo. We propose that Noc not only serves as a spatial regulator of cell division to protect the nucleoid, but also a timing device with an important role in the co-ordination of chromosome segregation and cell division.
Project description:Analysis of the transcriptional effects of pGAL1-MKS1, pGAL1-NNK1, and pGAL1-FMP48 overexpression. BY4700 gal1::NAT ura3delta0 S. cerevisiae cells carrying a [pGAL1-MKS1-HA, URA3, CEN], [pGAL1-NNK1-HA, URA3, CEN], or [pGAL1-FMP48-HA, URA3, CEN] plasmid, or empty vector BG1805, were grown to early log phase, induced with 0.2% galactose, and harvested after 1.5 h and 6 h. RNA from a strain overexpressing MKS1, NNK1, or FMP48 was competitively hybridized with RNA from an identically treated strain carrying empty vector.<br><br>FMP48 = YGR052W. MKS1 = YNL076W. NNK1 = YKL171W.