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Box 1.8The two main classes of protein and peptide hormone receptors

G-protein linked receptors that frequently activate serine/threonine kinases through second messengers such as cAMP, diacylglycerol, calmodulin

Image ch1fb8a.jpg

Receptors with inherent tyrosine kinase activity or associated with intracellular molecules possessing tyrosine kinase activity. Some intracellular kinases are attached to the membrane.

Image ch1fb8b.jpg

From: Chapter 1, Principles of endocrinology

Cover of Endocrinology
Endocrinology: An Integrated Approach.
Nussey S, Whitehead S.
Copyright © 2001, BIOS Scientific Publishers Limited.

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