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. 1979 Jan;6(1):41–56. doi: 10.1093/nar/6.1.41

Precise location of DNase I cutting sites in the nucleosome core determined by high resolution gel electrophoresis.

L C Lutter
PMCID: PMC327672  PMID: 424299

Abstract

The precise locations of the DNase I cutting sites in the nucleosome core have been determined by analysis of the DNA products of a DNase I digestion of 32P end-labelled mucleosome cores on a high resolution gel electrophoresis system. This system is capable of resolving fragments of mixed sequence DNA differing by one base into the region of 160 bases in length. The DNase I cutting sites in the core are found to be spaced at multiples of about 10.4 (i.e. clearly different from 10.0) bases along the DNA, but show significant variations about this value. In addition to the location of the sites, the stagger between individual sites on opposite strands has been determined and is found to be inconsistent with at least one proposed mechanism for nuclease cleavage of chromatin DNA. Finally, a calculated distribution of fragment lengths in a DNase I digest of nuclei has been determined from the data obtained from the nucleosome core and found to be in reasonable agreement with the observed distribution. The periodicity of 10.4 is discussed with respect to the number of base pairs per turn of chromatin DNA and the number of superhelical turns of DNA per nucleosome.

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Selected References

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

  1. Brutlag D., Atkinson M. R., Setlow P., Kornberg A. An active fragment of DNA polymerase produced by proteolytic cleavage. Biochem Biophys Res Commun. 1969 Dec 4;37(6):982–989. doi: 10.1016/0006-291x(69)90228-9. [DOI] [PubMed] [Google Scholar]
  2. Crick F. H. Linking numbers and nucleosomes. Proc Natl Acad Sci U S A. 1976 Aug;73(8):2639–2643. doi: 10.1073/pnas.73.8.2639. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Felsenfeld G. Chromatin. Nature. 1978 Jan 12;271(5641):115–122. doi: 10.1038/271115a0. [DOI] [PubMed] [Google Scholar]
  4. Finch J. T., Lutter L. C., Rhodes D., Brown R. S., Rushton B., Levitt M., Klug A. Structure of nucleosome core particles of chromatin. Nature. 1977 Sep 1;269(5623):29–36. doi: 10.1038/269029a0. [DOI] [PubMed] [Google Scholar]
  5. Germond J. E., Hirt B., Oudet P., Gross-Bellark M., Chambon P. Folding of the DNA double helix in chromatin-like structures from simian virus 40. Proc Natl Acad Sci U S A. 1975 May;72(5):1843–1847. doi: 10.1073/pnas.72.5.1843. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Hewish D. R., Burgoyne L. A. Chromatin sub-structure. The digestion of chromatin DNA at regularly spaced sites by a nuclear deoxyribonuclease. Biochem Biophys Res Commun. 1973 May 15;52(2):504–510. doi: 10.1016/0006-291x(73)90740-7. [DOI] [PubMed] [Google Scholar]
  7. Klenow H., Henningsen I. Selective elimination of the exonuclease activity of the deoxyribonucleic acid polymerase from Escherichia coli B by limited proteolysis. Proc Natl Acad Sci U S A. 1970 Jan;65(1):168–175. doi: 10.1073/pnas.65.1.168. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Kornberg R. D. Structure of chromatin. Annu Rev Biochem. 1977;46:931–954. doi: 10.1146/annurev.bi.46.070177.004435. [DOI] [PubMed] [Google Scholar]
  9. Lutter L. C. Characterization of DNase-I cleavage sites in the nucleosome. Cold Spring Harb Symp Quant Biol. 1978;42(Pt 1):137–147. doi: 10.1101/sqb.1978.042.01.015. [DOI] [PubMed] [Google Scholar]
  10. Lutter L. C. Deoxyribonuclease I produces staggered cuts in the DNA of chromatin. J Mol Biol. 1977 Nov 25;117(1):53–69. doi: 10.1016/0022-2836(77)90022-5. [DOI] [PubMed] [Google Scholar]
  11. Lutter L. C. Kinetic analysis of deoxyribonuclease I cleavages in the nucleosome core: evidence for a DNA superhelix. J Mol Biol. 1978 Sep 15;124(2):391–420. doi: 10.1016/0022-2836(78)90306-6. [DOI] [PubMed] [Google Scholar]
  12. Noll M. DNA folding in the nucleosome. J Mol Biol. 1977 Oct 15;116(1):49–71. doi: 10.1016/0022-2836(77)90118-8. [DOI] [PubMed] [Google Scholar]
  13. Noll M. Internal structure of the chromatin subunit. Nucleic Acids Res. 1974 Nov;1(11):1573–1578. doi: 10.1093/nar/1.11.1573. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Sanger F., Coulson A. R. A rapid method for determining sequences in DNA by primed synthesis with DNA polymerase. J Mol Biol. 1975 May 25;94(3):441–448. doi: 10.1016/0022-2836(75)90213-2. [DOI] [PubMed] [Google Scholar]
  15. Sanger F., Coulson A. R. The use of thin acrylamide gels for DNA sequencing. FEBS Lett. 1978 Mar 1;87(1):107–110. doi: 10.1016/0014-5793(78)80145-8. [DOI] [PubMed] [Google Scholar]
  16. Simpson R. T., Whitlock J. P. Mapping DNAase l-susceptible sites in nucleosomes labeled at the 5' ends. Cell. 1976 Oct;9(2):347–353. doi: 10.1016/0092-8674(76)90124-0. [DOI] [PubMed] [Google Scholar]
  17. Sollner-Webb B., Felsenfeld G. Pancreatic DNAase cleavage sites in nuclei. Cell. 1977 Mar;10(3):537–547. doi: 10.1016/0092-8674(77)90040-x. [DOI] [PubMed] [Google Scholar]
  18. Sollner-Webb B., Melchior W., Jr, Felsenfeld G. DNAase I, DNAase II and staphylococcal nuclease cut at different, yet symmetrically located, sites in the nucleosome core. Cell. 1978 Jul;14(3):611–627. doi: 10.1016/0092-8674(78)90246-5. [DOI] [PubMed] [Google Scholar]

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