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In vitro packaging of mature phage DNA by Salmonella phage P22. 1984

E Strobel, and W Behnisch, and H Schmieger

Mature, headful-sized DNA extracted from the Salmonella phages P22 and L, and P22/L-hybrid phages can be encapsulated in vitro by means of a packaging system for exogenous DNA. The probability of packaging reaches about 10(-3) per headful-sized molecule. The absence of in vitro recombination was demonstrated, to eliminate the possibility that such a process had created concatemers. The endonucleolytic cut at the pac site, which initiates sequential packaging in vivo, does not occur with the mature DNA substrate in vitro. The position of pac on the molecule is not important but the pac-recognizing phage protein gp3 is indispensable for in vitro encapsulation.

UI MeSH Term Description Entries
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D004279 DNA, Viral Deoxyribonucleic acid that makes up the genetic material of viruses. Viral DNA
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D012483 Salmonella Phages Viruses whose host is Salmonella. A frequently encountered Salmonella phage is BACTERIOPHAGE P22. Salmonella Bacteriophages,Bacteriophage, Salmonella,Bacteriophages, Salmonella,Salmonella Bacteriophage,Salmonella Phage
D012486 Salmonella typhimurium A serotype of Salmonella enterica that is a frequent agent of Salmonella gastroenteritis in humans. It also causes PARATYPHOID FEVER. Salmonella typhimurium LT2
D013045 Species Specificity The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species. Species Specificities,Specificities, Species,Specificity, Species
D014764 Viral Proteins Proteins found in any species of virus. Gene Products, Viral,Viral Gene Products,Viral Gene Proteins,Viral Protein,Protein, Viral,Proteins, Viral

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