Nfkb2 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
NFKB2 (Nuclear Factor Kappa B Subunit 2), also known as p100 or p52, is a member of the NF-κB transcription factor family. NFKB2 is synthesized as a full-length p100 precursor that is processed to the active p52 subunit. It plays crucial roles in immune responses, inflammation, cell survival, and neuronal function. Dysregulation of NFKB2 is implicated in neurodegenerative diseases, cancer, and autoimmune disorders .
| Attribute |
Value |
| Gene Symbol |
NFKB2 |
| Protein Name |
Nuclear Factor NF-kappa-B p100 subunit |
| Alternative Names |
p100, p52, NF-κB2, LYT10 |
| UniProt ID |
Q12986 |
| Molecular Weight |
~100 kDa (p100); ~52 kDa (p52) |
| Protein Family |
NF-κB family |
| Subcellular Localization |
Nucleus, cytoplasm |
NFKB2 has unique features:
- N-terminal RHD — Rel homology domain for DNA binding
- C-terminal ankyrin repeats — Inhibitory domain (in p100)
- Processing site — Proteolytic cleavage to generate p52
- Transactivation domain — Present in p52
Processing is constitutive or inducible via the NF-κB inducing kinase (NIK) .
NFKB2 functions in:
- Alternative pathway — Non-canonical NF-κB signaling
- Lymphoid development — B cell and lymphoid organ formation
- Immune responses — Regulates adaptive immunity
- Inflammation — Controls inflammatory gene expression
NFKB2 regulates:
- Cell survival — Anti-apoptotic gene expression
- Differentiation — Cell fate decisions
- Angiogenesis — VEGF and other factors
- Metabolism — Metabolic gene regulation
In neurons:
- Synaptic plasticity — Regulates learning and memory genes
- Neuroprotection — Can be neuroprotective or pro-death
- Neuroinflammation — Controls glial activation
- Neurodevelopment — Important for brain development
NFKB2 in AD:
- Chronic inflammation — Elevated in AD brain
- Neuronal dysfunction — May contribute to synaptic loss
- Aβ response — Activated by amyloid pathology
- Therapeutic target — NF-κB inhibitors in development
- Neuroinflammation — Activated in PD substantia nigra
- Dopaminergic degeneration — Contributes to neuron loss
- Microglial activation — Drives neuroinflammation
- Motor neuron disease — NF-κB activated in ALS
- Glial activation — Promotes inflammation
- Disease progression — Contributes to neurodegeneration
- Demyelination — NF-κB in oligodendrocyte death
- Autoimmunity — Central to MS pathogenesis
Targeting NFKB2:
- NIK inhibitors — Block p100 processing
- Proteasome inhibitors — Reduce p52 generation
- Anti-inflammatory — Broader NF-κB approaches
- PMID:8340146 — Discovery of NFKB2
- PMID:10625657 — NFKB2 structure and function
- PMID:11025718 — NF-κB alternative pathway
- PMID:14593116 — NFKB2 in immune function
- PMID:15857886 — NFKB2 in the brain
- PMID:21479819 — NFKB2 in neurodegeneration
The study of Nfkb2 Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.