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PSMB8

Chr 6p21.32

proteasome 20S subunit beta 8

Aliases:
RING10, D6S216E, PSMB5i, beta5i
MANE:
ENST00000374882.8

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Autoinflammatory disorders

    BIALLELIC, autosomal or pseudoautosomal
  • Childhood interstitial lung disease

    BIALLELIC, autosomal or pseudoautosomal
  • COVID-19 research

    BOTH monoallelic and biallelic, autosomal or pseudoautosomal
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Periodic fever syndromes

    BIALLELIC, autosomal or pseudoautosomal
  • Primary immunodeficiency or monogenic inflammatory bowel disease

    BIALLELIC, autosomal or pseudoautosomal
  • Severe insulin resistance and lipodystrophy syndromes

    BIALLELIC, autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • Proteasome disability syndrome

    0.81
  • proteosome-associated autoinflammatory syndrome

    0.76
  • plasma cell myeloma

    0.62
  • mantle cell lymphoma

    0.54
  • neoplasm

    0.50
  • amyloidosis

    0.47
  • AL amyloidosis

    0.38
  • acute lymphoblastic leukemia

    0.36
  • non-Hodgkin lymphoma

    0.35
  • autoinflammatory syndrome

    0.34

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

Protein function (UniProt)

Proteasome subunit beta type-8

The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity. This subunit is involved in antigen processing to generate class I binding peptides. Replacement of PSMB5 by PSMB8 increases the capacity of the immunoproteasome to cleave model peptides after hydrophobic and basic residues. Involved in the generation of spliced peptides resulting from the ligation of two separate proteasomal cleavage products that are not contiguous in the parental protein (PubMed:27049119). Acts as a major component of interferon gamma-induced sensitivity. Plays a key role in apoptosis via the degradation of the apoptotic inhibitor MCL1. May be involved in the inflammatory response pathway. In cancer cells, substitution of isoform 1 (E2) by isoform 2 (E1) results in immunoproteasome deficiency. Required for the differentiation of preadipocytes into adipocytes

Curated MONDO disease pages that list PSMB8 among their top associated genes.

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.