Track topics on Twitter Track topics that are important to you
strain VF39 contains a plasmid, pRleVF39b, which encodes a distinctive type of conjugation system (rhizobial type IVa) that is relatively widespread among rhizobial genomes. The cluster of genes encoding the transfer functions lacks orthologs to genes such as , and , but contains 15 conserved genes of unknown function. We determined the importance of these genes in conjugation by constructing marked and unmarked mutations in each gene, and established that six genes, now designated , played a significant role in plasmid transfer. Like the relaxase gene, , and the genes encoding the MPF system ( genes), five of these genes, located in two divergently transcribed operons, are regulated by the Xre family repressor TrbR. The other gene, encodes a protein with similarity to histidinol phosphatases, and its role in conjugation is unclear, but mutations in are severely impaired for conjugation. TrcF does not play a role in regulation of other conjugation genes.
This article was published in the following journal.
Name: Microbiology (Reading, England)
For a century, the MetalEurop foundry released metals into the river "La Deûle". Previous work revealed higher microbial diversity in metal impacted sediments, and horizontal gene transfer mediated b...
Nanomaterials of AlO and TiO have been proved to promote the spread of antibiotic resistance genes (ARGs) by horizontal gene transfer. In this work, we found that FeO@MoS nanocomposite inhibited the h...
The widespread emergence of antibiotic resistance genes (ARGs) in drinking water systems endangers human health, and may be exacerbated by their horizontal gene transfer (HGT) among microbiota. In our...
The multiresistance gene cfr has a broad host range encompassing both Gram-positive and Gram-negative bacteria, and can be located on the chromosomes or on plasmids. In this study, a novel conjugative...
Commensal butyrate-producing bacteria in the Firmicutes phylum are abundant in the human intestine and are important for maintaining health. However, understanding of the metabolism and host interacti...
To estimate the safety of NY-ESO-1 Plasmid DNA (pPJV7611) Cancer Vaccine given by PMED in patients with tumor type known to express NY-ESO-1 or LAGE-1 using frequency, severity, and durati...
To evaluate the safety, toxicity and immunological effects of adjuvant administration of an experimental therapy consisting on priming with three intramuscular administrations of a plasmid...
Prospective, open, randomized, parallel, two-arm trial to compare the clinical pregnancy rate between most commonly used two embryo transfer techniques: trial followed by transfer techniqu...
The purpose of this study is to compare IVF outcomes between day 3 and day 5 embryo transfer in patients with five or fewer embryos in a fresh embryo transfer in vitro fertilization (IVF) ...
This study is designed to assess the safety and preliminary efficacy of five different doses of DTA-H19 given as six intravesical infusions into the bladder of patients with superficial bl...
Filamentous or elongated proteinaceous structures which extend from the cell surface in gram-negative bacteria that contain certain types of conjugative plasmid. These pili are the organs associated with genetic transfer and have essential roles in conjugation. Normally, only one or a few pili occur on a given donor cell. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed, p675) This preferred use of "pili" refers to the sexual appendage, to be distinguished from bacterial fimbriae (FIMBRIAE, BACTERIAL), also known as common pili, which are usually concerned with adhesion.
A plasmid whose presence in the cell, either extrachromosomal or integrated into the BACTERIAL CHROMOSOME, determines the "sex" of the bacterium, host chromosome mobilization, transfer via conjugation (CONJUGATION, GENETIC) of genetic material, and the formation of SEX PILI.
Plasmids coding for proteins which induce PLANT TUMORS. The most notable example of a plant tumor inducing plasmid is the Ti plasmid found associated with AGROBACTERIUM TUMEFACIENS.
The transfer of energy of a given form among different scales of motion. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed). It includes the transfer of kinetic energy and the transfer of chemical energy. The transfer of chemical energy from one molecule to another depends on proximity of molecules so it is often used as in techniques to measure distance such as the use of FORSTER RESONANCE ENERGY TRANSFER.
The processes by which organisms utilize organic substances as their nutrient sources. Contrasts with AUTOTROPHIC PROCESSES which make use of simple inorganic substances as the nutrient supply source. Heterotrophs can be either chemoheterotrophs (or chemoorganotrophs) which also require organic substances such as glucose for their primary metabolic energy requirements, or photoheterotrophs (or photoorganotrophs) which derive their primary energy requirements from light. Depending on environmental conditions some organisms can switch between different nutritional modes (AUTOTROPHY; heterotrophy; chemotrophy; or PHOTOTROPHY) to utilize different sources to meet their nutrients and energy requirements.
Bioinformatics is the application of computer software and hardware to the management of biological data to create useful information. Computers are used to gather, store, analyze and integrate biological and genetic information which can then be applied...
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...