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.

  • Letter
  • Published:

Activation of Hurain by Bivalent iron

Abstract

HURAIN1, the active principle of the sap of jabillo trees (Hura crepitans) which is responsible for its proteolytic action, apparently represents a proteinase with special chemical properties differing from those so far known for this class of enzymes. During purification and assay of the enzyme, it was found that the enzymatic activity of hurain is greatly affected by metal ions.

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

Access options

Buy this article

USD 39.95

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

Similar content being viewed by others

References

  1. Jaffe, W., J. Biol Chem., 149, 1 (1943).

    CAS  Google Scholar 

  2. Anson, M. L., J. Gen. Physiol., 22, 79 (1938–39).

    Article  CAS  Google Scholar 

  3. Northrop, J. H., Kunitz, M., and Herriott, R. M., Crystalline Enzymes, 309, second ed. (Columbia Univ. Press, New York, 1955).

    Google Scholar 

  4. Schwert, G. W., and Takenaka, Y., Biochim. Biophys. Acta, 16, 570 (1955).

    Article  CAS  Google Scholar 

  5. Schwert, G. W., Neurath, H., Kaufman, S., and Snoke, J. E., J. Biol. Chem., 172, 221 (1948).

    CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

SHARON DE SEIDL, D., GAEDE, K. Activation of Hurain by Bivalent iron. Nature 190, 1112 (1961). https://doi.org/10.1038/1901112a0

Download citation

  • Issue date:

  • DOI: https://doi.org/10.1038/1901112a0

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