PSMB8

The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a member of the proteasome B-type family, also known as the T1B family, that is a 20S core beta subunit. This gene is located in the class II region of the MHC (major histocompatibility complex). Expression of this gene is induced by gamma interferon and this gene product replaces catalytic subunit 3 (proteasome beta 5 subunit) in the immunoproteasome. Proteolytic processing is required to generate a mature subunit. Two alternative transcripts encoding two isoforms have been identified; both isoforms are processed to yield the same mature subunit. [provided by RefSeq, Jul 2008]

Description

Proteasome 20S subunit beta 8

Tissue specificity

Low tissue specificity

Subcell location

Vesicles, Cytokinetic bridge

Predicted location

Intracellular

Protein family

Disease related genes
Enzymes
FDA approved drug targets
Human disease related genes
Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Plasma proteins
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Protein evidence (Kim et al 2014)

Chromosome

6 (32840717 - 32844679)

Ensembl ID

ENSG00000204264  (ver. 103.38)

Orthologs

Mouse Psmb8: ENSMUSG00000024338

UniProt

P28062

neXtProt

NX_P28062

Human splice variants
Mouse splice variants

Protein structure