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The nucleotide sequence of crossover sites in the genome of four intertypic (type 3/type 1) poliovirus recombinants has been determined. The approximate boundaries of the crossover regions were first estimated by RNase T1 oligonucleotide mapping of the recombinant genomes; then appropriate regions were sequenced by the chain termination method using oligonucleotide-primed reverse transcription of the recombinant RNAs. The crossover sites (defined as the contiguous sequences shared by the recombinant and both parental genomes flanked, in the recombinant genome, by heterotypic RNA segments) are 5, 5, 7, and 11 nucleotides long, respectively. The recombination was precise and was not accompanied by any other genetic alterations. The recombination sites were found to be located within genome segments having a potential to form secondary structure elements. Based on this observation, a model of recombination between picornaviral RNA genomes has been proposed. The essence of this model consists in bringing together homologous regions of two recombining RNA genomes via formation of intermolecular duplexes, detachment of the nascent 3' end of the newly synthesized complementary RNA from a "parting" site on the first template and its subsequent "jumping" to the identical (or closely related) "anchoring" site on the other template. Features of this model are discussed in some detail.
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
July 1981,
Virology,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
November 1984,
Virology,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
November 1983,
Virology,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
March 1986,
Journal of virology,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
January 1988,
Molekuliarnaia biologiia,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
January 1983,
Virology,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
December 1988,
Nucleic acids research,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
December 2010,
PloS one,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
January 1991,
SAAS bulletin, biochemistry and biotechnology,
L I Romanova, and
V M Blinov, and
E A Tolskaya, and
E G Viktorova, and
M S Kolesnikova, and
E A Guseva, and
V I Agol
January 1979,
Cold Spring Harbor symposia on quantitative biology,
