Unformatted text preview: regulated. - What are the three different types of receptors involved in cell signaling? - What are the steps involved in G-protein signaling? - What would happen if the GTP on the G& could not be hydrolyzed? - What are the different types of G proteins and where do they bring about effects? - How does G-protein signaling work? What is the effector and what are the secondary messengers? - What is PKA and how does it get activated in a G-protein pathway? - Gq stimulates a different effector and brings about a different response than G& . What is the effector and what is the downstream effect? - Ca 2+ acts as an effective secondary messenger because it is normally kept at a low concentration inside the cell. What keeps the intracellular Ca 2+ levels low? - How are the signaling pathways turned off?...
View Full Document
- Winter '08
- cell biology, Autocrine Signaling, Cell-Cell Communication