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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1979 Jan;76(1):101–105. doi: 10.1073/pnas.76.1.101

DNA sequencing and melting curve.

M Y Azbel
PMCID: PMC382884  PMID: 284324

Abstract

The dependence of DNA absorbance (for light at about 260 nm) on temperature is related to a specific DNA sequence structure in the vicinity of DNA thermal denaturation (the so-called DNA melting or coiling). A straightforward analysis of the experimental DNA melting curve allows us to determine the lengths, the A+T content, and the location in DNA of certain domains. In the case of a specific DNA fragmentation, the order of fragments in DNA can be learned from this analysis, nondestructively and quickly, without fractionating the fragments and other methods of fragmentation. If the DNA nucleotide sequence is known except for some sites and uncertain portions, the analysis determines these sites and the accuracy of the sequence at the portions. This information may complement exact methods of DNA sequencing. The proposed analysis is applied to bacteriophage phiX174, whose melting curve is known. The results are compared to and found to be in an excellent agreement with the known phiX174 nucleotide sequence.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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