Practice question
Question
A G protein-coupled receptor (GPCR) is a cell-surface transmembrane receptor that works with the help of a G-protein. Choose the correct option for the role of G-protein :
Explanation
GPCR activation promotes guanine nucleotide exchange on heterotrimeric G-alpha subunit, replacing GDP with GTP. GTP-bound alpha dissociates to regulate effectors like adenylyl cyclase. Intrinsic GTPase later hydrolyzes GTP to GDP terminating signaling cascade.
Related blogs
Guides and insights connected to this topic
Biomolecules Biology Notes - Chemical Composition, Amino Acids, Lipids, Proteins, Nucleic Acids, Enzymes and Cofactors
Detailed biology notes on biomolecules. Learn chemical tissue analysis, amino acids, proteins, lipids, nucleic acids, and enzyme action.
SARS-CoV-2 Coronavirus: Structure, Genome, Proteins, Replication, Pathogenesis, and Host Interaction
Coronavirus Overview Coronaviruses (CoVs) are enveloped viruses (surrounded by a lipid membrane derived from host cells), belonging to the s...
Coronavirus Structure, Genome, Replication, Symptoms, Pathogenesis, and Prevention
Structure of Coronavirus Coronaviruses (enveloped RNA viruses) fall in the virus family Coronaviridae, order Nidovirales. They are enveloped...
Discussion
Comments
Please log in to join the discussion.
Login to commentNo comments yet. Be the first to start the discussion.