GPCR-cAMP-PKA signaling pathway module

A compact Gs-coupled GPCR signaling module. An agonist-occupied GPCR activates heterotrimeric Gs, G alpha s stimulates adenylyl cyclase, cAMP accumulates and activates PKA, and PKA phosphorylates cytosolic and nuclear substrates including CREB. The module is grounded in GO:0007188. ADRB2 is anchored to PAINT GPCR nodes; downstream GNAS, ADCY5, PRKACA, and CREB1 are curated UniProt exemplars without PTN ancestry claims in this first pass.

MODULE:gpcr_camp_pka_signalingDRAFTSignaling Pathwaymodules/gpcr_camp_pka_signaling.yaml
adenylate cyclase-modulating G protein-coupled receptor signaling pathwayGO:0007188
GO:0007188
adenylate cyclase-modulating G protein-coupled receptor signaling pathway
The module is grounded in the GO biological process term for GPCR signaling through cAMP.
4Nodes
3Parts
0Variant Sets
0Variants
5Annotons
2Connections

Derived QC

Recommended-field compliance

100.0% recommended fields populated

All recommended fields populated.

Module deep research

✗ none found

No MODULE:gpcr_camp_pka_signaling deep-research report alongside the module YAML.

Leaf nodes lacking representative members

every leaf node grounds to a representative protein.

Template conformance

every declared conforms_to bundle matches its template motif.

Gene-review completeness (2/5 grounded genes reviewed)

1 complete review(s) · 2 with deep research · 3 missing review · 0 reviewed but lacking deep research

Gene Review Complete Deep research
ADRB2 P07550
CREB1 P16220 143/146
ADCY5 O95622
PRKACA P17612
GNAS P63092

Details

Context
eukaryotesNCBITaxon:2759
plasma membraneGO:0005886 cytosolGO:0005829 nucleusGO:0005634
GPCR-cAMP-PKA signaling pathwaySignaling Pathwaygpcr_camp_pka_signaling
adenylate cyclase-modulating G protein-coupled receptor signaling pathwayGO:0007188
Context
eukaryotesNCBITaxon:2759
plasma membraneGO:0005886 cytosolGO:0005829 nucleusGO:0005634

Connections

G alpha s-GTP stimulates adenylyl cyclase.
cAMP generated by adenylyl cyclase activates PKA.
Part 1: receptor and Gs activation
Gs-coupled receptor activates heterotrimeric G proteinRegulatory Stepgs_gpcr_activation

Agonist-bound GPCR acts as a guanine nucleotide exchange factor for the heterotrimeric G protein, producing active G alpha s-GTP.

Annotons

Beta-2 adrenergic receptor exemplar
beta2_adrenergic_receptor
Participant: Family: class A Gs-coupled GPCRs
Family:
class A Gs-coupled GPCRsPANTHER:PTHR24248
Representative Members: ADRB2UniProtKB:P07550

Function

G protein-coupled receptor activityGO:0004930

Receptor exemplar for agonist-driven Gs activation.

G alpha s switch
g_alpha_s
Participant: Gene Product: GNAS
Gene Product:

GTP-bound alpha subunit that stimulates adenylyl cyclase.

Part 2: cAMP second messenger generation
Adenylyl cyclase produces cAMPReactionadenylyl_cyclase_activation

G alpha s activates membrane adenylyl cyclase to convert ATP to cAMP.

Annotons

Adenylyl cyclase
adenylyl_cyclase
Participant: Gene Product: ADCY5
Gene Product:

Function

adenylate cyclase activityGO:0004016
Products: cyclic AMP

Enzyme tier that generates the cAMP second messenger.

Part 3: PKA activation and transcriptional output
PKA activation and CREB phosphorylationRegulatory Steppka_creb_output

cAMP binds PKA regulatory subunits, freeing catalytic subunits to phosphorylate substrates including CREB-family transcription factors.

Annotons

PKA catalytic subunit
pka_catalytic_subunit
Participant: Gene Product: PRKACA
Gene Product:

Function

protein serine/threonine kinase activityGO:0004674
Targets: CREB1

cAMP-responsive kinase output of the pathway.

CREB transcriptional effector
creb_transcription_factor
Participant: Gene Product: CREB1
Gene Product:

Locations

nucleusGO:0005634

Nuclear transcriptional effector phosphorylated by PKA.