Project description:RIP-seq analysis to identify RsmA bound RNAs using co-immunoprecipitation and sequencing in Serratia sp. ATCC 39006. We report the binding sites of RsmA (CsrA homologue) in Serratia sp. ATCC39006
Project description:The RNA-seq technique aims to identify genes that are differently expressed in low nitrogen (2mM (NH4)2SO4) and high nitrogen (10mM (NH4)2SO4) conditions. Two groups of Serratia sp. ZM were analysed by us, low nitrogen group and high nitrogen group.
Project description:Studies of expression of mechanims of defense of the Acinetobacter sp.5-2Ac.02 from airborne hospital environment under stress conditions, such as SOS response (ROS response, heavy metals resistant mechanisms, peptides), as well as Quorum network (acetoin cluster and aromatics biodegradation cluster). Characterization functional of AcoN-like as negative regulator protein from acetoin cluster in Acinetobacter spp. Strains
Project description:Screening a library of 573 cyanobacteria extracts for inhibition of the quorum sensing regulated prodigiosin production of Serratia marcescens, an extract of the cyanobacterium Fischerella ambigua (Näg.) Gomont 108b was found to drastically increase the prodigiosin production. Bioactivity-guided isolation of the active compounds resulted in the two new natural products ambigol D and E along with the known ambigols A and C. Ambigol C treatment increased prodiginine production of Serratia sp. ATCC 39006 (S39006) by a factor of 10, while ambigols A and D were found to have antibiotic activity against this strain. RNA-Seq of S39006 treated with ambigol C and subsequent differential gene expression and functional enrichment analyses indicated a significant downregulation of genes associated with the translation machinery and fatty acid biosynthesis in Serratia, as well as increased expression of genes related to the uptake of l-proline. These results suggest that the ambigols increase the prodiginine production in S39006 not by activating the SmaIR quorum sensing system, but possibly by increasing the precursor supply of l-proline and malonyl-CoA.
Project description:BACKGROUND: Meticillin-resistant Staphylococcus aureus (MRSA) infections remain important medical and veterinary challenges. The MRSA isolated from dogs and cats typically belong to dominant hospital-associated clones, in the UK mostly EMRSA-15 (CC22 SCCmecIV), suggesting original human-to-animal transmission. Nevertheless, little is known about host-specific genetic variation within the same S. aureus lineage. HYPOTHESIS/OBJECTIVES: To identify host-specific variation amongst MRSA CC22 SCCmecIV by comparing isolates from pets with those from in-contact humans using whole-genome microarray. METHODS: Six pairs of MRSA CC22 SCCmecIV from human carriers (owners and veterinary staff) and their respective infected in-contact pets were compared using a 62-strain whole-genome S. aureus microarray (SAM-62). The presence of putative host-specific genes was subsequently determined in a larger number of human (n = 47) and pet isolates (n = 93) by PCR screening. RESULTS: Variation in mobile genetic elements (MGEs) occurred frequently and appeared largE: The variation found amongst MGEs highlights that genetic adaptation in MRSA continues. However, host-specific MGEs were not detected, which supports the hypothesis that pets may not be natural hosts of MRSA CC22 and emphasizes that rigorous hygiene measures are critical to prevent contamination and infection of dogs and cats. The host specificity of individual heavy-metal resistance genes warrants further investigation into different selection pressures in humans and animals.
Project description:This dataset includes MS-DIAL processed data from ethyl acetate extracts of bacterial supernatants obtained from Bacillus sp. strain 16060, Serratia marcescens strain SE1, and Serratia marcescens strain SE2.
Project description:ChIP sequencing performed on A549 cells following either Mock infection, infection with WT SARS-CoV-02, or infection with SARS-CoV-02 with Orf8 deletion
