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Chapter 9 Blog: Cell Communication (Kathryn)

Page history last edited by Kathryn Addabbo 13 years, 6 months ago

A.  Daily Blog



B.  Useful Materials


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This video gives a helpful overview of signal transduction. This is the process when a signal binds to a receptor on the cell membrane. When this signal molecule binds, it causes a conformational change on the intracellular side of the protein. This results in the release of a phosphate, which binds to create GTP. This phosphate is then transferred multiple times to other proteins, and finally reaches the nucleus. It then causes a change in the DNA of the cell. 


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This video is a short summary of the initiation of apoptosis, and how the process is carried out. Basically, a cascade is created from cleaving several proteins, which eventually go to the nucleus and destroy the cell's genetic material, resulting in the death of the cell. 


Update in serotonin and bone

This article discusses the effect that serotonin has on bone mass. Recent tests show that serotonin has a regulatory effect on bone mass, although these tests cannot determine how. It is shown to regualte bone metabolism. This is done through serotonin modifiers, such as SSRI (selective serotonin reuptake inhibitors).

Comments (1)

Derek Weber said

at 12:50 am on Nov 23, 2010

Good materials Kathryn.

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