Project description:We sought to understand the change in the global gene expression profile of the ΔYGP1 strain in comparison with the BGL-6_Kl parental strain. The transcriptome analysis revealed the change in expression of genes involved in cell wall structure, biogenesis, and integrity that might contribute to the improvement of the BGL display efficiency phenotype.
Project description:To solve the problem of low FK520 production by Streptomyces hygroscopicus var. ascomyceticus FS35, PHB synthesis gene phaC and PHB decomposition gene fkbU were co-overexpressed in parent strain FS35 to construct recombinant strain OphaCfkbU. Surprisingly, recombinant strain OphaCfkbU accumulated more biomass than parent strain FS35 in whole fermentation. Therefore, to explore the effect of co-overexpression on the strain growth, comparative transcriptome analysis were carried out between parent strain FS35 and recombinant strain OphaCfkbU. Transcriptome data showed that co-overexpression increased the utilization of sugar sources and stimulated the generation of coenzymes, ribosome, acyl carrier proteins and sulfate donors. This study revealed the internal mechanism of the effect of PHB on strain growth, proving a reference for the role of PHB in other microorganisms.
Project description:To study the roles of NWMN_0641, we used microarray to compare the transcriptome of the NWMN_0641 deletion strain with that of the wild-type Staphylococcus aureus Newman strain. Transcriptome of the NWMN_0641 deletion mutant strain and the wild-type Newman strain
Project description:The w1118 strain is an inbred lab stock widely used in genetic and transgenic studies. w1118 males have a median life span of 35 days. Adult males were collected within 24 hr after eclosion. Approximately 200 flies were maintained in constant darkness in each food bottle at 25°C and 70% humidity and were transferred to fresh bottles every 3-4 days. Transcripts were harvested at d3 and d47. To separate the head from the rest of the body, flies were frozen and briefly vortexed in liquid nitrogen. Fly heads were collected using a sieve which retained fly bodies. Total RNA was extracted using Trizol (GIBCO/BRL). Poly(A) RNA was isolated using Oligotex resin (Qiagen). Samples were profiled with Affymetrix DrosGenome1 GeneChips, using standard Affymetrix protocol. Keywords: time-course
Project description:We challenge bristol strain (wild-type), metl-9 KO strain (short as KO, has a 101bp insertion, leads to a truncated protein of 258aa) and metl-9 catalytic-activity mutated strain (short as mut, has N172K, D274G mutations in full-length protein) with P.aeruginosa (P.A14), and observe a discrepant transcriptome pattern between wild-type and KO/mut strains. Plenty of innate immune response genes show different expression patterns upon P.A14 infection between the wild-type strain and KO/mut strain. It indicates the important role of metl-9 and 6mA in worm innate immune response modulation.
Project description:The goal of the experiment was to determine the difference in gene expression between the wild-type strain and a strain lacking rpaA (ΔrpaA). Because gene expression is not at steady-state in the wild-type -- it oscillates with a circadian period -- and we did not know a priori whether it is at steady-state in the ΔrpaA strain, we compared the time-averaged gene expression in the wild-type to the time-averaged gene expression in the ΔrpaA strain.
