Intracellular distribution of proteasomes.
Proteasomes are large multicatalytic proteinase complexes which are responsible for the selective degradation of cellular proteins and the production of peptides for antigen presentation. Proteasomes are localized both in the nucleus and in the cytoplasm, where some are associated with the endoplasmic reticulum membrane. Recent studies have shown differences in the localization of proteasome subpopulations, demonstrated the functional importance of endoplasmic reticulum-associated proteasomes and investigated the role of putative nuclear localization signals and tyrosine phosphorylation on proteasome transport into the nucleus.
Rivett
A J
AJ
Department of Biochemistry, School of Medical Sciences, University of Bristol, UK. j.rivett@bristol.ac.uk
D000818:Animals; D001692:Biological Transport; D002467:Cell Nucleus / Q000378:metabolism; D003546:Cysteine Endopeptidases / Q000378:metabolism*; D003593:Cytoplasm / Q000378:metabolism; D004721:Endoplasmic Reticulum / Q000378:metabolism; D006801:Humans; D009097:Multienzyme Complexes / Q000378:metabolism*; D046988:Proteasome Endopeptidase Complex
D009097:Multienzyme Complexes; D003546:Cysteine Endopeptidases; D046988:Proteasome Endopeptidase Complex