Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 9 June 1972:
Vol. 176. no. 4039, pp. 1137 - 1139
DOI: 10.1126/science.176.4039.1137
Prev | Table of Contents | Next

Articles

Cooperative Critical Thermal Transition of potassium Accumulation in Smooth Muscle

Ignacio L. Reisin 1 and Jagdish Gulati 1

1 Department of Molecular Biology, Pennsylvania Hospital, Philadelphia

The steady-state levels of potassium and sodium of taenia coli of guinea are critically affected by varying temperature in the narrow range 12° to °C. For the accumulation of both cations the critical temperature, Tc, is 13.8°C the presence of millimolar external potassium. The value of Tc, decreases 10.0°C when the external potassium is raised to 10 millimolar. Since, at a fixed Temperature, the potassium accumulation follows a cooperative mechanism, the results are compared with the quantitative predictions of this approach. The itical thermal transition behavior can be described in terms of the cooperative cumulation process.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Potassium and Sodium in Frog Muscle.
J. Gulati and I. L. Reisin (1972)
Science 176, 1139-1141
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)