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The Function of Immunoproteasomes-An Immunologists' Perspective.


ABSTRACT: Proteasomes are responsible for intracellular proteolysis and play an important role in cellular protein homeostasis. Cells of the immune system assemble a specialized form of proteasomes, known as immunoproteasomes, in which the constitutive catalytic sites are replaced for cytokine-inducible homologues. While immunoproteasomes may fulfill all standard proteasome' functions, they seem specially adapted for a role in MHC class I antigen processing and CD8+ T-cell activation. In this way, they may contribute to CD8+ T-cell-mediated control of intracellular infections, but also to the immunopathogenesis of autoimmune diseases. Starting at the discovery of its catalytic subunits in the genome, here, we review the observations shaping our current understanding of immunoproteasome function, and the consequential novel opportunities for immune intervention.

SUBMITTER: van den Eshof BL 

PROVIDER: S-EPMC8699091 | biostudies-literature |

REPOSITORIES: biostudies-literature

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