Results 271 to 280 of about 761,508 (293)
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Bacterial DNA Methylation and Methylomes
2016Formation of C5-methylcytosine, N4-methylcytosine, and N6-methyladenine in bacterial genomes is postreplicative and involves transfer of a methyl group from S-adenosyl-methionine to a base embedded in a specific DNA sequence context. Most bacterial DNA methyltransferases belong to restriction-modification systems; in addition, "solitary" or "orphan ...
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Persistence of bacterial DNA in orthopedic infections
Diagnostic Microbiology and Infectious Disease, 2018Polymerase chain reaction (PCR) has been proposed as a method to identify bacteria in clinical samples because it is more sensitive than culture techniques and can produce results rapidly. However, PCR can detect DNA from dead cells and thus cannot distinguish between live and dead cells in a tissue sample.
Heidi B, Kaplan +4 more
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DNA PROCESSING REACTIONS IN BACTERIAL CONJUGATION
Annual Review of Biochemistry, 1995Bacterial conjugation is an important source of genetic plasticity. The initiation complex for conjugative transfer of transmissible plasmids—the relaxosome—is a specific DNA-protein structure that has been isolated from cells and reconstituted from purified components in vitro.
E, Lanka, B M, Wilkins
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DNA transfer and DNA synthesis during bacterial conjugation
Zeitschrift f�r Vererbungslehre, 1966Mutant strains ofEscherichia coli, which were thermosensitive with respect to DNA replication, were used for conjugation experiments at 37°C and 42°C. Inhibition of DNA synthesis in the donor strain has no influence on the yield of recombinats. Inhibition of DNA synthesis in the recipient strain is accompanied by a complete loss of recombinant ...
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Bacterial topoisomerases and the control of DNA supercoiling
Trends in Genetics, 1990DNA in bacterial cells is under negative superhelical tension, a feature that facilitates many of the activities of DNA. Supercoiling is introduced enzymatically by DNA gyrase, and the accumulation of excessively high levels is prevented by the relaxing activity of DNA topoisomerase I.
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The Antigenicity of Bacterial DNA
2002DNA is a complex macromolecule whose immunological properties vary with base sequence and backbone structure. Although now recognized as important for normal immunity, the antigenic and immunogenic properties of DNA were originally conceptualized entirely in the context of systemic lupus erythematosus (SLE).
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Use of DNA reassociation in bacterial classification
Canadian Journal of Microbiology, 1988The reassociation properties of DNA provide invaluable taxonomic tools. Different methods may give different reassociation values. However, the thermal stability of reassociated DNA strands (a measurement that seems independent of method) is useful in delineating genomic species.
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DNA Supercoiling Catalyzed by Bacterial Gyrase
DNA gyrase is an essential type II topoisomerase that is conserved across bacteria species and has an essential function of resolving overwound (positive supercoiled) DNA and introducing negative supercoils into relaxed DNA. The overall catalytic activity of gyrase can be determined using in vitro assays utilizing purified enzyme subunits and a DNA ...Samika, Joshi, Neil, Osheroff
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Hybridization of Bacterial DNA on Filters
Cold Spring Harbor Protocols, 2006Joseph, Sambrook, David W, Russell
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