Interferon-gamma-inducible subunits are incorporated in human brain 20S proteasome - PubMed (original) (raw)
Interferon-gamma-inducible subunits are incorporated in human brain 20S proteasome
Marco Piccinini et al. J Neuroimmunol. 2003 Feb.
Abstract
In most tissues expressing MHC class I molecules, proteasomes incorporating IFN-gamma-inducible subunits, defined immuno-proteasomes, exist together with constitutive proteasomes. In physiological conditions, the central nervous system expresses neither MHC class I molecules nor TAP1 and TAP2 transporters but besides being constitutive, it is unknown whether immuno-proteasomes are also present in this tissue. We present evidence that in human brain, the two types of proteasome exist suggesting that under physiological conditions, the mechanisms regulating expression of IFN-gamma-inducible subunits as well as of MHC class I molecules and TAP1 and TAP2 transporters in nervous tissue, are not entirely coordinated.
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