Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Article
  • Published:

Direct Determination of the Superhelix Density of Closed Circular DNA by Viscometric Titration

Abstract

A method has been developed for determining directly the superhelix density of DNA; this is more sensitive and subject to fewer constraints than sedimentation analysis.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

References

  1. Vinograd, J., Lebowitz, J., Radloff, R., Watson, R., and Laipis, P., Proc. US Nat. Acad. Sci., 53, 1104 (1965).

    Article  CAS  Google Scholar 

  2. Espejo, R., and Canelo, E. S., Virology, 34, 738 (1968).

    Article  CAS  Google Scholar 

  3. Crawford, L. V., and Waring, M. J., J. Mol. Biol., 25, 23 (1967).

    Article  CAS  Google Scholar 

  4. Bauer, W., and Vinograd, J., J. Mol. Biol., 33, 141 (1968).

    Article  CAS  Google Scholar 

  5. Espejo, R., Canelo, E., and Sinsheimer, R. L., Proc. US Nat. Acad. Sci., 63, 1164 (1969).

    Article  CAS  Google Scholar 

  6. Hudson, B., Upholt, W. B., Devinny, J., and Vinograd, J., Proc. US Nat. Acad Sci., 62, 813 (1969).

    Article  CAS  Google Scholar 

  7. Vinograd, J., Radloff, R., and Bruner, R., Biopolymers, 3, 481 (1965).

    Article  CAS  Google Scholar 

  8. Bruner, R., and Vinograd, J., Biochim. Biophys. Acta, 108, 18 (1965).

    Article  CAS  Google Scholar 

  9. Felsenfeld, G., and Hirschman, S. Z., J. Mol. Biol., 13, 407 (1965).

    Article  CAS  Google Scholar 

  10. Hirschman, S. Z., and Felsenfeld, G., J. Mol. Biol., 16, 347 (1966).

    Article  CAS  Google Scholar 

  11. Lerman, L. S., J. Mol. Biol., 3, 18 (1961).

    Article  CAS  Google Scholar 

  12. Burgi, E., and Hershey, A. D., J. Mol. Biol., 3, 458 (1961).

    Article  CAS  Google Scholar 

  13. Crothers, D. M., and Zimm, B. H., J. Mol. Biol., 12, 525 (1965).

    Article  CAS  Google Scholar 

  14. Müller, W., and Crothers, D. M., J. Mol. Biol., 35, 251 (1968).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

RÉVET, B., SCHMIR, M. & VINOGRAD, J. Direct Determination of the Superhelix Density of Closed Circular DNA by Viscometric Titration. Nature New Biology 229, 10–13 (1971). https://doi.org/10.1038/newbio229010a0

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1038/newbio229010a0

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing