Thermal denaturation of DNA from bromodeoxyuridine substituted cells

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Thermal denaturation of DNA from bromodeoxyuridine substituted cells

The thermal denaturation of DNA from cell lines extensively substituted with bromodeoxyuridine has been examined spectrophotometrically over a wide range in ionic strength and by thermal elution from hydroxyapatite columns. BrdU substitution stabliizes DNA at all ionic strengths between 7.5 mM and 1350 mM potassium ion concentration, although a plot of log ionic strength vs Tm deviates from lin...

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Increased thermal stability of chromatin containing 5-bromodeoxyuridine-substituted DNA.

The replacement of thymidine by 5-bromodeoxyuridine in DNA leads to a greatly enhanced stability of chromatin from hepatoma tissue culture or embryonic rat pancreas, as measured by thermal chromatography on hydroxylapatite. The increased stability is directly correlated with the degree of bromodeoxyuridine substitution. On the other hand, the incorporation of bromodeoxyuridine into DNA results ...

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The DNA molecule can take various conformational forms. Investigations focus mainly on the so-called ‘B-form’, schematically drawn in the famous paper by Watson and Crick [1]. This is the usual form of DNA in a biological environment and is the only form that is stable in an aqueous environment. Other forms, however, can teach us much about DNA. They have the same nucleotide base pairs for ‘bui...

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ژورنال

عنوان ژورنال: Nucleic Acids Research

سال: 1976

ISSN: 0305-1048,1362-4962

DOI: 10.1093/nar/3.1.49