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NFKB2

Chr 10q24.32

nuclear factor kappa B subunit 2

Aliases:
LYT-10, p52, p105, NF-kB2, p49/p100
MANE:
ENST00000661543.1

Annotations refreshed 10 hours ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • COVID-19 research

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Ectodermal dysplasia

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Ectodermal dysplasia without a known gene mutation

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Primary immunodeficiency or monogenic inflammatory bowel disease

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Respiratory ciliopathies including non-CF bronchiectasis

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

Disease associations (Open Targets)

  • immunodeficiency, common variable, 10

    0.78
  • common variable immunodeficiency

    0.68
  • immunodeficiency disease

    0.47
  • Hodgkins lymphoma

    0.38
  • deficiency in anterior pituitary function - variable immunodeficiency syndrome

    0.38
  • Deficiency in anterior pituitary function-variable immunodeficiency syndrome

    0.38
  • Alzheimer disease

    0.37
  • Parkinson disease

    0.37
  • inborn error of immunity

    0.37
  • colon adenocarcinoma

    0.37

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Nuclear factor NF-kappa-B p100 subunit

NF-kappa-B is a pleiotropic transcription factor present in almost all cell types and is the endpoint of a series of signal transduction events that are initiated by a vast array of stimuli related to many biological processes such as inflammation, immunity, differentiation, cell growth, tumorigenesis and apoptosis. NF-kappa-B is a homo- or heterodimeric complex formed by the Rel-like domain-containing proteins RELA/p65, RELB, NFKB1/p105, NFKB1/p50, REL and NFKB2/p52. The dimers bind at kappa-B sites in the DNA of their target genes and the individual dimers have distinct preferences for different kappa-B sites that they can bind with distinguishable affinity and specificity. Different dimer combinations act as transcriptional activators or repressors, respectively. NF-kappa-B is controlled by various mechanisms of post-translational modification and subcellular compartmentalization as well as by interactions with other cofactors or corepressors. NF-kappa-B complexes are held in the cytoplasm in an inactive state complexed with members of the NF-kappa-B inhibitor (I-kappa-B) family. In a conventional activation pathway, I-kappa-B is phosphorylated by I-kappa-B kinases (IKKs) in response to different activators, subsequently degraded thus liberating the active NF-kappa-B complex which translocates to the nucleus. In a non-canonical activation pathway, the MAP3K14-activated CHUK/IKKA homodimer phosphorylates NFKB2/p100 associated with RelB, inducing its proteolytic processing to NFKB2/p52 and the formation of NF-kappa-B RelB-p52 complexes. The NF-kappa-B heterodimeric RelB-p52 complex is a transcriptional activator. The NF-kappa-B p52-p52 homodimer is a transcriptional repressor. NFKB2 appears to have dual functions such as cytoplasmic retention of attached NF-kappa-B proteins by p100 and generation of p52 by a cotranslational processing. The proteasome-mediated process ensures the production of both p52 and p100 and preserves their independent function. p52 binds to the kappa-B consensus sequence 5'-GGRNNYYCC-3', located in the enhancer region of genes involved in immune response and acute phase reactions. p52 and p100 are respectively the minor and major form; the processing of p100 being relatively poor. Isoform p49 is a subunit of the NF-kappa-B protein complex, which stimulates the HIV enhancer in synergy with p65. In concert with RELB, regulates the circadian clock by repressing the transcriptional activator activity of the CLOCK-BMAL1 heterodimer

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.