60Co γ-rays induce predominantly C/G to G/C transversions in double-stranded M13 DNA
نویسندگان
چکیده
منابع مشابه
Conformations of the single-stranded DNA of bacteriophage M13.
At least two conformations of M13 single-stranded DNA have been demonstrated by measuring differences in sedimentation coefficient and by direct visualization in the electron microscope. Which form is obtained from infected cells and/or intact phage depends on the pH, ionic strength, and temperature. The slower-sedimenting form can be converted to the faster-sedimenting, single-stranded form by...
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Mechanically interlocked molecules such as rotaxanes and catenanes have potential as components of molecular machinery. Rotaxanes consist of a dumb-bell-shaped molecule encircled by a macrocycle that can move unhindered along the axle, trapped by bulky stoppers. Previously, rotaxanes have been made from a variety of molecules, but not from DNA. Here, we report the design, assembly and character...
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Earlier studies showed that the Ml3 single-stranded circle is converted to duplex replicative forms (RF) in vivo and in uifro by a rifampicin-sensitive system that fails to act on +X174 DNA. In the absence of DNA polymerase I, the synthetic complementary strand produced by a crude cell extract contained a small gap at a unique position relative to the viral template strand. In these studies we ...
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RNA plays myriad roles in the transmission and regulation of genetic information that are fundamentally constrained by its mechanical properties, including the elasticity and conformational transitions of the double-stranded (dsRNA) form. Although double-stranded DNA (dsDNA) mechanics have been dissected with exquisite precision, much less is known about dsRNA. Here we present a comprehensive c...
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We propose a nonlinear model derived from first principles, to describe bubble dynamics of DNA. Our model equations include a term derived from the dissipative effect of intermolecular vibrational modes. Such modes are excited by the propagating bubble, and we term this 'curvature dissipation'. The equations that we derive allow for stable pinned localized kinks which form the bubble. We perfor...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 1988
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/16.16.8147