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:

Ester-hydrolysing Activity of Urokinase Preparations

Abstract

NITROPHENYL esters have proved to be very useful in examining hydrolytic enzymes1,2. The usually rapid rate of hydrolysis can be conveniently followed by the production of nitrophenolate ion which itself is measured by an increased absorption at 400 mµ. These esters appear to be hydrolysed at the same ‘active sites’ of the enzymes which are involved in the catalytic process with other synthetic or natural substrates3–6. Furthermore, when examining the effect of a given enzyme on a series of nitrophenyl esters with different substitutions in the acid portions, a pattern of specificity emerges which is fully comparable with that obtained with more conventional substrates5,7.

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. Hartley, B. S., and Kilby, B. A., Biochem. J., 50, 672 (1952).

    Article  CAS  Google Scholar 

  2. Bender, M. L., J. Amer. Chem. Soc., 84, 2582 (1962).

    Article  CAS  Google Scholar 

  3. Spencer, T., and Sturtevant, J. M., J. Amer. Chem. Soc., 81, 1874 (1959).

    Article  CAS  Google Scholar 

  4. Lorand, L., and Rule, N. G., Nature, 190, 722 (1961).

    Article  ADS  CAS  Google Scholar 

  5. Lorand, L., Brannen, jun., W. T., and Rule, N. G., Arch. Biochem. Biophys., 96, 147 (1962).

    Article  CAS  Google Scholar 

  6. Rule, N. G., and Lorand, L., Biochim. Biophys. Acta, 81, 130 (1964).

    CAS  Google Scholar 

  7. Zerner, B., and Bender, M. L., J. Amer. Chem. Soc., 85, 356 (1963).

    Article  CAS  Google Scholar 

  8. Ploug, J., and Kjeldgaard, N. O., Biochim. Biophys. Acta, 24, 278 (1957).

    Article  CAS  Google Scholar 

  9. White, W. F., and Mozen, M. M. (personal communication).

  10. Remmert, L. F., and Cohen, P. P., J. Biol. Chem., 181, 431 (1949).

    CAS  PubMed  Google Scholar 

  11. Troll, W., Sherry, S., and Wachman, J., J. Biol. Chem., 208, 85 (1954).

    CAS  PubMed  Google Scholar 

  12. Martin, C. J., Golubow, J., and Axelrod, A. E., J. Biol. Chem., 234, 1718 (1959).

    CAS  PubMed  Google Scholar 

  13. Kjeldgaard, N. O., and Ploug, J., Biochim. Biophys. Acta, 24, 283 (1957).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

LORAND, L., MOZEN, M. Ester-hydrolysing Activity of Urokinase Preparations. Nature 201, 392–393 (1964). https://doi.org/10.1038/201392a0

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1038/201392a0

This article is cited by

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

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