Abstract
The molecular weight of bacteriophage phi W-14 DNA, determined by velocity sedimentation in neutral sucrose gradients, was 92 +/- 6 X 10(6). The DNA showed marked fragmentation in alkaline sucrose gradients. This fragmentation was not a consequence of preexisting single-strand interruptions in the DNA, since thermal denaturation of DNA yielded intact single strands. The alpha-putrescinylthymine groups in phi W-14 DNA appeared to be labile; some, or parts of some, of these groups were cleaved from the DNA in alkali.
MeSH Terms
Bacteriophages/analysis,drug effects
Centrifugation, Density Gradient
DNA, Viral/analysis
Hot Temperature
Molecular Weight
Nucleic Acid Denaturation
Pseudomonas
Ribonucleases/metabolism
Sodium Hydroxide/pharmacology
Chemicals
DNA, Viral
Sodium Hydroxide
Ribonucleases
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Lewis H A
Miller R C
Stone J C
Warren R A
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