Fragmentation of bacteriophage S13 replicative form DNA by restriction endonucleases from Hemophilus influenzae and Hemophilus aegyptius.
نویسندگان
چکیده
The restriction enzymes Hind from Hemophilus influenzae and Hae,,, from Hemophilus aegyptius cleave bacteriophage S13 replicative form (RF) DNA into 13 and 10 specific fragments, respectively. The sizes of these fragments were estimated by gel efectrophoresis, electron microscopy, and pyrimidine isostich analysis. The Hind and Hae,,, fragments were ordered relative to each other by cross digestion and a physical map of the S13 genome constructed. Comparison of the Hind cleavage patterns of S13 RF DNA and $X174 RF DNA showed the majority of the fragments from the two DNAs coincided with each other except for three of the thirteen 513 fragments and three of the thirteen @X174 fragments. Comparison of the Hue,,, patterns of the two DNAs revealed a lack of coincidence of one S13 fragment only and two +X174 fragments. From the data obtained by the cleavage of the two DNAs by Hind and Hue,,,, a correlation between the physical restriction enzyme cleavage maps and the genetic map of the two phages was made. The differences in cleavage of the two DNAs by the restriction enzymes have been explained by changes in two restriction enzyme sites in the AB region and one change of site in the F region of the genetic map of the two bacteriophages.
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ورودعنوان ژورنال:
- Virology
دوره 71 1 شماره
صفحات -
تاریخ انتشار 1976