The Second-Messenger System for Peptide Hormones
- 15 August 1989
- journal article
- research article
- Published by Taylor & Francis in Hospital Practice
- Vol. 24 (8) , 59-70
- https://doi.org/10.1080/21548331.1989.11703762
Abstract
There are three major hormone classes—peptide, steroid, and the newly defined growth factors—each with its own system for signal transduction in the cell. Two interdependent theses are proposed for the peptide hormone: that incoming signal transduction requires coupling to a G protein in a second-messenger pathway, and that second-messenger redundancy assures checks and balances in cell regulation.Keywords
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