In an analytical-method comparison study of clinical samples, the Abbott RealTime CT new formulation assay (m2000 real-time PCR), consisting of a duplex PCR targeting different parts of the cryptic plasmid in Chlamydia trachomatis, was compared both with version 2 of the Roche Cobas TaqMan CT assay, comprising a duplex PCR for a target in the cryptic plasmid and the omp1 gene, and with the Gen-...

background: dna vaccines are third generation vaccines which have made promises to combat infectious diseases. cationic liposomes are used as effective delivery systems for dna vaccines to generate stronger immunity. objective: encapsulation of pcdna3.1+pa plasmid, encoding protective antigen (pa) of bacillus anthracis (b. anthracis) into cationic liposomes, and evaluation of its effect on spec...

To investigate the effect of long non coding RNA MAGI2-antisense 3 on proliferation, invasion and migration cervical cancer cells underlying mechanism. SiHa were divided into plasmid cloning DNA group, DNA-MAGI2-antisense anti-microRNA-negative control anti-microRNA-31-5p 3+microRNAnegative group 3+microRNA-31-5p group; quantitative reverse transcription polymerase chain reaction was used to de...

Mobilization of the staphylococcal plasmid pC221 requires at least one plasmid-encoded protein, MobA, in order to form a relaxosome. pC221 and closely related plasmids also possess an overlapping reading frame encoding a protein of 15 kDa, termed MobC. By completing the nucleotide sequence of plasmid pC223, we have found a further example of this small protein, and gene knockouts have shown tha...

Background: Crohn's disease and Ulcerative colitis are known as inflammatory bowel disease with high morbidity which are as a result of increasing immune responses to intestinal microbiota in genetically susceptible individuals. The association of adherent invasive Escherichia coli with Crohn's disease in human has been discussed for decades. The principal aim of this study was to assess the re...

A simplified procedure to detect the calcium dependency of virulent plasmid-bearing strains of Yersinia enterocolitica was developed. A low-calcium, agarose-based medium of brain heat infusion with added magnesium effectively differentiated plasmid-bearing and plasmidless isolates. Further, the expression of calcium dependency in plasmid-bearing strains of Y. enterocolitica as measured by the a...

The mobilization region of plasmid CloDF13 was localized to a 3.6 kb DNA segment that was analysed by transposon mutagenesis and DNA sequencing. Analysis of the DNA sequence allowed us to identify two mobilization genes and the CloDF13 origin of conjugative transfer (oriT), which was localized to a 661 bp segment at one end of the mobilization (Mob) region. Thus, the overall organization was or...

The dielectric properties of 12 kbp plasmid DNA have been measured as a function of temperature in the range 5 degrees C to 40 degrees C. Time domain reflectometry was used to obtain dielectric data over the frequency range from 200 kHz to 3 GHz. Values of the frequency dependent polarisability per DNA macromolecule have been determined from the measurements. Possible mechanisms that could acco...

The levels of intramolecular plasmid recombination, following transfection of a plasmid substrate for homologous recombination into normal and immortally transformed cells, have been examined by two independent assays. In the first assay, recovered plasmid was tested for DNA rearrangements which regenerate a functional neomycin resistance gene from two overlapping fragments. Following transform...