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[Interaction of the isolated DNA of lambda phage with spheroplasts of E. coli treated with sturine]. 1977

T F Moiseeva, and S Ia Ditiatkin, and A G Sabel'nikov, and B N Il'iashenko

The method of centrifugation in sucrose density gradient (30-55%) of the spheroplast membrane preparations treated and untreated with sturine and infected with phage lambda DNA demonstrated that sturine, treatment increased the phage lambda DNA absorption three-fold. About 50% of the lambda DNA molecules adsorbed by spheroplasts are bound with the cytoplasmic membrane of spheroplasts treated with sturine; 50% of the lambda DNA molecules are bound with the cell wall membrane on the sturine-untreated spheroplasts. The data obtained allow to conclude that the stimulating effect of sturine in E. coli spheroplasts transfection by lambda DNA is connected with redistribution of phage DNA absorbed on spheroplasts from the cell wall to the cytoplasmic membrane facilitating the penetration of DNA and its fastening on the membrane.

UI MeSH Term Description Entries
D011506 Proteins Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein. Gene Products, Protein,Gene Proteins,Protein,Protein Gene Products,Proteins, Gene
D003090 Coliphages Viruses whose host is Escherichia coli. Escherichia coli Phages,Coliphage,Escherichia coli Phage,Phage, Escherichia coli,Phages, Escherichia coli
D004279 DNA, Viral Deoxyribonucleic acid that makes up the genetic material of viruses. Viral DNA
D004926 Escherichia coli A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D013104 Spheroplasts Cells, usually bacteria or yeast, which have partially lost their cell wall, lost their characteristic shape and become round. Spheroplast
D014170 Transformation, Genetic Change brought about to an organisms genetic composition by unidirectional transfer (TRANSFECTION; TRANSDUCTION, GENETIC; CONJUGATION, GENETIC, etc.) and incorporation of foreign DNA into prokaryotic or eukaryotic cells by recombination of part or all of that DNA into the cell's genome. Genetic Transformation,Genetic Transformations,Transformations, Genetic

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