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Unformatted text preview: figure out to turn on genes and turn them off. 5. Genes-a. Birth not on. .until turned on…why? i. Turned on bc started producing testosterone. Genes are always there, just not turned on. When turn off…ends that. .. 6. Second Messengers a. Calcium b. Cyclic AMP c. *Epinephrine 7. Inactive protein 1 will activate. 8. Features of signal transduction pathways a. Protein phosphorylation b. Whats the point? i. Cells communicate ii. Amplify a signal c. Many involve a second messenger i. cAMP- ANALOGY- behaves like an intracellular hormone d. Target cell- when binds e. G-protein receptor…where used? i. Hormone receptors ii. Neurotransmitters iii. Vision and smell in mammals iv. Many bacteria- producing a toxin which inhibits the g-protein pathway (ex:cholera, botchulism ) v. 70-75 percent act by g-prot pathway vi. Genes can be activated and deactivated through intracellular pathways....
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- Fall '08
- Cell Signaling, Signal transduction pathway, a. Receptionb