Pathway

Gs–cAMP–PKA Signaling

G alpha(s)-coupled receptor signaling through cyclic AMP and protein kinase A

A common GPCR branch in which Gαs stimulates cyclic AMP production and cAMP regulates protein kinase A and other effectors.

REACTOME IDENTIFIERR-HSA-418555View source record ↗

Overview

EXPLORE BY LEVEL

A signal can bind a GPCR and switch on Gs inside the cell. Gs helps make cyclic AMP, which activates PKA. Other GPCRs can use different helper proteins and routes.

Quick Facts

AT A GLANCE
Representative RelayGPCR → Gαs-GTP → adenylyl cyclase → cAMP → PKA
Species ContextHomo sapiens
ScopeOne G-protein coupling route; other GPCRs use other G proteins and effectors

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Recommended Reading

Trusted references for learning more about Gs–cAMP–PKA Signaling.

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Research Claims

This pathway is a selected Gαs branch, not a universal GPCR sequence. Local cyclase/PDE isoforms, AKAP scaffolds, G-protein subunits, receptor phosphorylation, ligand bias, and trafficking organize temporal and spatial responses. GAP activity is Gα-family-specific, and β-arrestins may also scaffold signals while promoting receptor internalization.