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IFI30

Function

Lysosomal thiol reductase that can reduce protein disulfide bonds. May facilitate the complete unfolding of proteins destined for lysosomal degradation. Plays an important role in antigen processing. Facilitates the generation of MHC class II-restricted epitodes from disulfide bond-containing antigen by the endocytic reduction of disulfide bonds (By similarity). Facilitates also MHC class I-restricted recognition of exogenous antigens containing disulfide bonds by CD8+ T-cells or crosspresentation (By similarity).

Post-translational modifications

N-glycosylated. Sugar chains contain mannose-6-phosphate.

Synthesized as a 35 kDa precursor which is then processed into the mature 30 kDa form via cleavage of N-terminal and C-terminal propeptides. Processing of the precursor is mediated by multiple lysosomal proteases.

Sequence similarities

Belongs to the GILT family.

Cellular localization

  • Secreted
  • Lysosome

Alternative names

  • Gamma-interferon-inducible lysosomal thiol reductase
  • Gamma-interferon-inducible protein IP-30
  • Legumaturain
  • IFI30
  • GILT
  • IP30

Target type

Proteins

Molecular weight

27964Da