Results 251 to 260 of about 18,457,999 (286)
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Restriction-modification systems in Streptomyces antibioticus
Canadian Journal of Microbiology, 1985Several restriction systems were detected in different strains of Streptomyces antibioticus by using actinophages as biological indicators. Adsorption of phages to the bacteria, together with the study of the efficiency of plating gave an initial indication of restriction in three strains.
J, Sànchez +4 more
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Restriction-modification systems determined by Pseudomonas plasmids
Plasmid, 1982Abstract Four additional Pseudomonas R plasmids determining the Pae R7 restriction-modification system have been detected. All are transfer deficient and appear to belong to the same incompatibility group. The Pseudomonas fertility plasmid FP110 determines a different restriction-modification system and also inhibits the propagation of phage B39
G A, Jacoby, L, Sutton
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GATC-specific restriction-modification systems in ruminal bacteria
Folia Microbiologica, 2004The GATC-specific restriction and modification activities were analyzed in 11 major bacterial representatives of ruminal microflora. Modification phenotype was observed in 13 out of 40 ruminal strains. MboI isoschizomeric restriction endonucleases were detected in 10 bacterial strains tested; three strains lacked any detectable corresponding ...
M, Piknová, P, Pristas, P, Javorský
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Cloning the KpnI restriction-modification system in Escherichia coli
Gene, 1991The genes encoding the KpnI restriction and modification (R-M) system from Klebsiella pneumoniae, recognizing the sequence, 5'-GGTAC decreases C-3', were cloned and expressed in Escherichia coli. Although the restriction endonuclease (ENase)- and methyltransferase (MTase)-encoding genes were closely linked, initial attempts to clone both genes as a ...
A W, Hammond +2 more
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Cloning and characterization of the genes of the CeqI restriction—modification system
The International Journal of Biochemistry & Cell Biology, 1997Two genes from Corynebacterium equii, a Gram-positive bacterium producing the CeqI restriction-modification enzymes were cloned and sequenced. In vivo restriction experiments, DNA and amino acid sequence data suggest that the two genes code for the endonuclease and the methyltransferase enzymes. However, when the two genes are expressed in E.
Z, Izsvák +3 more
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Role of restriction-modification systems in prokaryotic evolution and ecology
Biochemistry (Moscow), 2015Restriction-modification (R-M) systems are able to methylate or cleave DNA depending on methylation status of their recognition site. It allows them to protect bacterial cells from invasion by foreign DNA. Comparative analysis of a large number of available bacterial genomes and methylomes clearly demonstrates that the role of R-M systems in bacteria ...
A S, Ershova +4 more
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Polymorphism of Bacterial Restriction-Modification Systems: The Advantage of Diversity
Evolution, 1994Bacterial restriction-modification systems provide defense against foreign DNA by using a self versus nonself recognition mechanism. A great diversity of recognition motifs is maintained in natural populations. Circumstantial evidence suggests that defense against bacteriophage viruses favors this diversity.
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Evolution of restriction-modification systems
2018Restriction Modification (R-M) systems prevent the invasion of foreign genetic material into bacterial cells and are therefore important in maintaining the integrity of the host genome. The spread of antibiotic resistance, which is proposed to occur via the transfer of foreign genes to the bacterial genome, makes the subject of R-M systems extremely ...
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Genetics of restriction/modification systems
Biochemical Society Transactions, 1980openaire +2 more sources