10 Questions
Which type of G protein activates adenylyl cyclase when certain ligands bind to specific GPCRs on the cell membrane?
Gs
When an agonist binds to a Gs-coupled receptor, what happens to the G protein?
The G protein exchanges its bound GDP for a GTP molecule
Which subunit of the Gs protein dissociates from the beta-gamma subunits when activated?
Alpha subunit (αs)
What is the main effect of the activated Gs protein on adenylyl cyclase?
Stimulation
Which type of G protein inhibits adenylyl cyclase when certain ligands bind to specific GPCRs on the cell membrane?
Gi
When an agonist binds to a Gi-coupled receptor, what happens to the G protein?
The G protein exchanges its bound GDP for a GTP molecule
Which subunits of the Gi protein work together to inhibit adenylyl cyclase?
Alpha subunit (αi) and beta-gamma subunits
What is the main effect of the activated Gi protein on adenylyl cyclase?
Inhibition
Which type of G protein activates phospholipase C when certain ligands bind to specific GPCRs on the cell membrane?
Gq
Which type of G protein is not mentioned in the provided text?
G12
Test your knowledge on G proteins with this quiz! Learn about the different types of G proteins, including Gs and Gi, and their role in cell signaling. Explore how G proteins interact with receptors and activate various cellular processes.
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