Canonical NF-kappaB signaling pathway module

A compact canonical NF-kappaB module. Pro-inflammatory receptors such as TNFR1 assemble adaptor/ubiquitin ligase complexes, activate the IKK complex, induce phosphorylation and proteasomal destruction of IkappaB inhibitors, and release NF-kappaB dimers to enter the nucleus and drive inflammatory, survival, and immune-response genes. The module is grounded in GO:0007249 and includes curated TNFR1, TRAF2, IKK, IkappaB, and NF-kappaB exemplars, with PTN anchors where PAINT seed rows support the role.

MODULE:nfkb_canonical_signalingDRAFTSignaling Pathwaymodules/nfkb_canonical_signaling.yaml
canonical NF-kappaB signal transductionGO:0007249
GO:0007249
canonical NF-kappaB signal transduction
The module is grounded in the GO biological process term for canonical NF-kappaB signaling.
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:nfkb_canonical_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 (1/7 grounded genes reviewed)

0 complete review(s) · 1 with deep research · 6 missing review · 0 reviewed but lacking deep research

Gene Review Complete Deep research
IKBKB O14920
CHUK O15111
NFKB1 P19838
NFKBIA P25963
RELA Q04206
TRAF2 Q12933
TNFRSF1A P19438 133/134

Details

Context
cytosolGO:0005829 nucleusGO:0005634
Canonical NF-kappaB signal transductionSignaling Pathwaynfkb_canonical_signaling
canonical NF-kappaB signal transductionGO:0007249
Context
cytosolGO:0005829 nucleusGO:0005634

Connections

Receptor-proximal ubiquitin scaffolds promote IKK activation.
IKK-dependent IkappaB degradation releases NF-kappaB dimers for nuclear import.
Part 1: receptor-proximal activation
TNF-family receptor/adaptor complexRegulatory Stepnfkb_receptor_complex

Ligand-bound TNFR-family receptors recruit adaptor proteins and TRAF ubiquitin ligases that build ubiquitin scaffolds for IKK activation.

Annotons

TNFR1 receptor input
tnfr1_receptor
Participant: Family: TNFRSF1A receptor family
Family:
TNFRSF1A receptor familyPANTHER:PTHR46861
Representative Members: TNFRSF1AUniProtKB:P19438

Function

tumor necrosis factor receptor activityGO:0005031

Cell-surface receptor exemplar for canonical inflammatory NF-kappaB activation.

TRAF adaptor/E3 ubiquitin ligase
traf_adaptor_ligase
Participant: Family: TRAF adaptor/ubiquitin ligase family
Family:
TRAF adaptor/ubiquitin ligase familyPANTHER:PTHR10131
Representative Members: TRAF2UniProtKB:Q12933

Processes

regulation of canonical NF-kappaB signal transductionGO:0043122

Receptor-proximal scaffold/ligase tier that couples TNFR signaling to IKK.

Part 2: IKK activation and IkappaB phosphorylation
IKK complex activationReactionikk_activation

NEMO/IKKgamma-bound IKK alpha and IKK beta are activated and phosphorylate IkappaB inhibitors, marking them for ubiquitin-dependent degradation.

Annotons

IKK alpha/beta catalytic subunits
ikk_kinase
Participant: Family: IkappaB kinase family
Family:
IkappaB kinase familyPANTHER:PTHR22969
Representative Members: CHUKUniProtKB:O15111 IKBKBUniProtKB:O14920

Function

protein serine/threonine kinase activityGO:0004674
Targets: IkappaB inhibitor proteins

Catalytic kinase tier that commits the canonical cascade.

IkappaB inhibitor
ikb_inhibitor
Participant: Gene Product: NFKBIA
Gene Product:

Cytosolic inhibitor degraded after IKK phosphorylation.

Part 3: NF-kappaB nuclear transcriptional output
NF-kappaB dimer nuclear entry and transcriptionRegulatory Stepnfkb_transcriptional_output

Degradation of IkappaB exposes nuclear localization signals on NF-kappaB dimers such as p50/RELA, allowing nuclear import and target gene activation.

Annotons

NF-kappaB p50/RELA dimer
nfkb_dimer
Participant: Protein Complex: NF-kappaB transcription factor dimer
Protein Complex:
NF-kappaB transcription factor dimer
Active units:
NFKB1/p50
Participant: Gene Product: NFKB1
Gene Product:
Role: DNA-binding p50 subunit
RELA/p65
Participant: Gene Product: RELA
Gene Product:
Role: transactivation subunit

Locations

nucleusGO:0005634

Transcription factor output of the canonical pathway.