Biosignaling

These are either group or individual presentations. Each activity is listed in order that it will be presentated.  If you work alone: 20 points, pairs: 10 points each student, triplets: 5 points for each student.   You can work on as many or as few of these as you like for a maximum of 30 points.  Send email to Dr. Stone with your selection and if you want to work alone or with 2 or 3 other students.   (No more than three students per topic, please.)  I will keep this page updated as topics are selected.  We will start these presentations on April 4, 2008.

For each type of signal transducer, give an example and answer the following questions:

• Where are they found?
• What type of signal is transduced (what are they used for)?
• How does the transducer work?
• How is the signal turned off?
• What conditions/diseases occur when there is a defect in the transducer?

1. Votage gated channels Edgar and Ayush

2. Ligand gated channels Edgar (solo)

3. Receptor enzymes Lindsay and Heather

4.  Receptors that are not enzymes that activate gene regulating proteins Erik and Manpreet

5. Serpentine receptors Ayush (solo)

The following second messenger are important for intracellular communication. Choose one, give an example of how it works and explain the process in detail.

7. cAMP Tara and G

8. diacyl glycerol Erik (solo)

9. phosphotidyl inositol Gurpreet (solo)

10. calcium ions Rachel (solo)

Choose one of the following control mechanisms, explain how it works, and give an example of a signalling system where it is used.

11. Phosphorylation Jenice(solo)

12. Protein kinases Teresa(solo)

13. Tumor suppressor genes Rachel and Vanessa

14. Apoptosis Tara (solo)