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.

Development of K+-Conductance and Membrane Potentials in Unfertilized Sea Urchin Eggs after Exposure to NH4OH

Abstract

THE fertilization of the sea urchin egg starts a sequence of changes in the cell membrane which can be measured as changes of membrane potential and membrane resistance1–3. The immediate consequence of contact of ovum and spermatozoon is an action potential, a depolarization and repolarization including a transient reversal of polarity. The overall sequence1,2 converts the anion-permeable membrane of the unfertilized egg (with a potential of about −10 mV, inside negative) to a rather typical K+ permeable membrane (about −60 mV, inside negative). The same results are obtained with parthenogenetic activation of the egg.

This is a preview of subscription content

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Steinhardt, R. A., Lundin, L., and Mazia, D., Proc. US Nat. Acad. Sci., 68, 2426 (1971).

    ADS  CAS  Article  Google Scholar 

  2. 2

    Steinhardt, R. A., Shen, S., and Mazia, D., Exp. Cell Res., 72, 195 (1972).

    CAS  Article  Google Scholar 

  3. 3

    Higashi, A., and Kaneko, H., Annotationes Zoologicae Japonenses, 44, 65 (1971).

    CAS  Google Scholar 

  4. 4

    Davson, H., and Danielli, J. F., The Permeability of Natural Membranes, first ed., 196 (Cambridge, 1943).

    Google Scholar 

  5. 5

    Warburg, O., Z. Physiol. Chem., 66, 305 (1910).

    Article  Google Scholar 

  6. 6

    Harvey, E. N., J. Exp. Zool., 10, 507 (1911).

    Article  Google Scholar 

  7. 7

    Hutchens, J. O., J. Cell Comp. Physiol., 14, 313 (1939).

    CAS  Article  Google Scholar 

  8. 8

    Loeb, J., Artificial Parthenogenesis and Fertilization, 147 (University of Chicago Press, 1913).

    Google Scholar 

  9. 9

    Epel, D., Pressman, B. C., Elsaesser, S., and Weaver, A. M., in The Cell Cycle: Gene-Enzyme Interactions (edit. by Padilla, G. M., Whitson, G. E., and Cameron, I. L.), 297 (Academic Press, New York, 1969).

    Google Scholar 

  10. 10

    Orr, C. W., Yoshikawa-Fukada, M., and Ebert, J. D., Proc. US Nat. Acad. Sci. 69, 243 (1972).

    ADS  CAS  Article  Google Scholar 

  11. 11

    Örström, A., Z. Physiol. Chem., 271, 1 (1941).

    Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

STEINHARDT, R., MAZIA, D. Development of K+-Conductance and Membrane Potentials in Unfertilized Sea Urchin Eggs after Exposure to NH4OH. Nature 241, 400–401 (1973). https://doi.org/10.1038/241400a0

Download citation

Further reading

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