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Homology between the Catalytic Subunits of Protein Phosphatases 1 and 2A Deduced from the cDNA

  • Patricia T. W. Cohen
  • Norbert Berndt
  • Odete da Cruz e Silva
  • David G. Campbell
Part of the Advances in Experimental Medicine and Biology book series (NATO ASI F, volume 231)

Abstract

A wide variety of extracellular signals transmit information to the cell interior by activating transmembrane signalling systems that control the production of a relatively small number of chemical mediators or “second messengers”. These substances (cyclic AMP, cyclic GMP, diacylglycerol and calcium ions) each activate particular protein kinases allowing them to phosphorylate key regulatory proteins and so translate external signals into cellular responses1,2. However, the steady state level of phosphorylation of any protein depends on the activities of protein phosphatases, as well as protein kinases, raising two important questions. How many protein phosphatases are present in cells, and are they also controlled by “second messengers”?

Keywords

Protein Phosphatase Catalytic Subunit Glycogen Phosphorylase Cellular Regulation Rabbit Skeletal Muscle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • Patricia T. W. Cohen
    • 1
  • Norbert Berndt
    • 1
  • Odete da Cruz e Silva
    • 1
  • David G. Campbell
    • 1
  1. 1.Department of BiochemistryUniversity of DundeeDundeeScotland

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