Orientation of cohesive end site cos determines the active orientation of chi sequence in stimulating recA . recBC-mediated recombination in phage lambda lytic infections.
نویسندگان
چکیده
منابع مشابه
Distance from cohesive end site cos determines the replication requirement for recombination in phage lambda.
Previous work showed that crossing-over in the middle of the chromosome of phage lambda requires more DNA replication than does crossing-over near the termini. Relocation of cos, the sequence that determines the lambda termini, alters the requirements for replication in a given marked interval, demonstrating that distance from cos determines the amount of DNA replication that is required for ge...
متن کاملThe interaction of cos with Chi is separable from DNA packaging in recA-recBC-mediated recombination of bacteriophage lambda.
Chi (5'-GCTGGTGG) is a recombinator in RecA-RecBC-mediated recombination in Escherichia coli. In bacteriophage lambda vegetative recombination, Chi is fully active only when it is correctly oriented with respect to cos, the site that defines the ends of the packaged chromosome. Here we demonstrate that packaging from cos is not necessary for this cos-Chi interaction. Our evidence suggests that ...
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Directionality and nonreciprocality of Chi-stimulated recombination in phage lambda.
Chi's are genetic elements that stimulate generalized recombination in their locale in phage lambda. All Chi's wherever located on lambda's chromosome, act asymmetrically in crosses blocked in DNA replication: (1) They stimulate exchange primarily to their left on the conventional lambda map, and (2) the stimulated exchange is frequently nonreciprocal, the recombinant carrying the Chi element b...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1982
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.79.19.5981