Results 31 to 40 of about 1,303,684 (303)

Control of bacterial DNA supercoiling [PDF]

Molecular Microbiology, 1992
SummaryTwo DNA topoisomerases control the level of negative supercoiling in bacterial cells. DNA gyrase introduces supercoils, and DNA topoisomerase I prevents super‐coiling from reaching unacceptably high levels. Perturbations of supercoiling are corrected by the substrate preferences of these topoisomerases with respect to DNA topology and by changes
openaire   +2 more sources

DNA waves and water [PDF]

, 2010
Some bacterial and viral DNA sequences have been found to induce low frequency electromagnetic waves in high aqueous dilutions. This phenomenon appears to be triggered by the ambient electromagnetic background of very low frequency.
A Tedeschi, C Lavallee, Del Giudice E, Del Giudice E, E Del Giudice, G Vitiello, J Aissa, L Montagnier, Landau LD, Montagnier L, Nickolaenko A P, Szent-Gyorgyi A, Voeikov VL   +12 more
core   +1 more source

Quantification of Bacterial Colonization in Dental Hard Tissues Using Optimized Molecular Biological Methods

Frontiers in Genetics, 2020
Bacterial infections of root canals and the surrounding dental hard tissue are still a challenge due to biofilm formation as well as the complex root canal anatomy.
Torsten Sterzenbach, Anne Pioch, Martin Dannemann, Christian Hannig, Marie-Theres Weber   +4 more
doaj   +1 more source

An efficient strategy for broad-range detection of low abundance bacteria without DNA decontamination of PCR reagents. [PDF]

PLoS ONE, 2011
BACKGROUND: Bacterial DNA contamination in PCR reagents has been a long standing problem that hampers the adoption of broad-range PCR in clinical and applied microbiology, particularly in detection of low abundance bacteria.
Shy-Shin Chang, Hsung-Ling Hsu, Ju-Chien Cheng, Ching-Ping Tseng   +3 more
doaj   +1 more source

A zinc finger protein array for the visual detection of specific DNA sequences for diagnostic applications. [PDF]

, 2010
The visual detection of specific double-stranded DNA sequences possesses great potential for the development of diagnostics. Zinc finger domains provide a powerful scaffold for creating custom DNA-binding proteins that recognize specific DNA sequences ...
Kim, Moon-Soo, Lee, Ji Youn, Revzin, Alexander, Segal, David J, Stybayeva, Gulnaz   +4 more
core   +2 more sources

Comparison of Bacterial DNA Profiles in Mid-Trimester Amniotic Fluid Samples From Preterm and Term Deliveries

Frontiers in Microbiology, 2020
Infection and inflammation are well recognized causes of spontaneous preterm delivery (PTD) (<37 gestational weeks) and adverse infant outcomes. To date, there has been very little investigation into bacterial communities in amniotic fluid using next ...
Lisa Stinson, Lisa Stinson, Maria Hallingström, Maria Hallingström, Malin Barman, Felicia Viklund, Jeffrey Keelan, Jeffrey Keelan, Marian Kacerovsky, Marian Kacerovsky, Matthew Payne, Matthew Payne, Bo Jacobsson, Bo Jacobsson, Bo Jacobsson   +14 more
doaj   +1 more source

Natural History of DNA-Dependent DNA Polymerases: Multiple Pathways to the Origins of DNA

Viruses, 2023
One of the major evolutionary transitions that led to DNA replacing RNA as the primary informational molecule in biological systems is still the subject of an intense debate in the scientific community.
Sávio Torres de Farias, Ariadne Nobrega Marinho Furtado, Ariosvaldo Pereira dos Santos Junior, Marco V. José   +3 more
doaj   +1 more source

Looking beyond endotoxin: a comparative study of pyrogen retention by ultrafilters used for the preparation of sterile dialyis fluid [PDF]

, 2014
Sterile single-use ultrafilters are used in dialysis for the preparation of the substitution fluid given to patients undergoing dialysis treatments with high convective fluid removal.
Brodbeck, Katrin, Glorieux, Griet, Hulko, Michael, Krause, Bernd, Speidel, Rose, Vanholder, Raymond   +5 more
core   +2 more sources

Efficiency of chemical versus mechanical disruption methods of DNA extraction for the identification of oral Gram-positive and Gram-negative bacteria

Journal of International Medical Research, 2020
Objective Clinical diagnostics often requires the detection of multiple bacterial species in limited clinical samples with a single DNA extraction method.
Xiaolan Li, Caroline J. Bosch-Tijhof, Xi Wei, Johannes J. de Soet, Wim Crielaard, Cor van Loveren, Dong Mei Deng   +6 more
doaj   +1 more source

Tomato protoplast DNA transformation: physical linkage and recombination of exogenous DNA sequences [PDF]

, 1987
Tomato protoplasts have been transformed with plasmid DNA's, containing a chimeric kanamycin resistance gene and putative tomato origins of replication.
A Crossway, A Deshayes, B Reiss, BR Thomas, C-L Hsiao, CP Meredith, DT Stinchcomb, EA Shahin, FA Krens, G Scangos, HC Birnboim, HE Ruley, I Potrykus, J Messing, J Paszkowski, Jacques Hille, JD Rochaix, K Struhl, K Wernars, KC Reed, KR Folger, M Koornneef, M Perucho, Maarten Jongsma, Maarten Koornneef, MG Murray, MW Bevan, O Smithies, P Zabel, Pim Zabel, PW Rigby, R Hain, R Peerbolte, RA Anderson, RD Shillito, S Kato, SN Cohen, T Maniatis, TL Adams   +38 more
core   +4 more sources