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Most cancer tissues showed moderate nuclear and cytoplasmic positivity. A few squamous cell carcinomas of skin, melanomas, gliomas and hepatocellular carcinomas showed strong immunoreactivity.
Most cancer cells showed moderate cytoplasmic positivity. Several gliomas, endometrial cancers and a few cases of testicular cancers showed strong cytoplasmic immunoreactivity.
The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core 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. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase 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 the largest non-ATPase subunit of the 19S regulator lid, which is responsible for substrate recognition and binding. Alternatively spliced transcript variants have been found for this gene.[provided by RefSeq, Jul 2010]
MEMSAT3 predicted membrane proteins SPOCTOPUS predicted membrane proteins THUMBUP predicted membrane proteins Predicted intracellular proteins Plasma proteins FDA approved drug targets Small molecule drugs Protein evidence (Ezkurdia et al 2014)
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GO:0000082 [G1/S transition of mitotic cell cycle] GO:0000165 [MAPK cascade] GO:0000186 [activation of MAPKK activity] GO:0000209 [protein polyubiquitination] GO:0000278 [mitotic cell cycle] GO:0000502 [proteasome complex] GO:0002223 [stimulatory C-type lectin receptor signaling pathway] GO:0002474 [antigen processing and presentation of peptide antigen via MHC class I] GO:0002479 [antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent] GO:0004175 [endopeptidase activity] GO:0005488 [binding] GO:0005634 [nucleus] GO:0005654 [nucleoplasm] GO:0005829 [cytosol] GO:0005838 [proteasome regulatory particle] GO:0006521 [regulation of cellular amino acid metabolic process] GO:0006595 [polyamine metabolic process] GO:0006915 [apoptotic process] GO:0006977 [DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest] GO:0007173 [epidermal growth factor receptor signaling pathway] GO:0007264 [small GTPase mediated signal transduction] GO:0007265 [Ras protein signal transduction] GO:0007411 [axon guidance] GO:0008286 [insulin receptor signaling pathway] GO:0008540 [proteasome regulatory particle, base subcomplex] GO:0008543 [fibroblast growth factor receptor signaling pathway] GO:0010467 [gene expression] GO:0012501 [programmed cell death] GO:0016020 [membrane] GO:0016032 [viral process] GO:0022624 [proteasome accessory complex] GO:0030234 [enzyme regulator activity] GO:0031145 [anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process] GO:0033209 [tumor necrosis factor-mediated signaling pathway] GO:0034515 [proteasome storage granule] GO:0034641 [cellular nitrogen compound metabolic process] GO:0038061 [NIK/NF-kappaB signaling] GO:0038095 [Fc-epsilon receptor signaling pathway] GO:0042176 [regulation of protein catabolic process] GO:0042590 [antigen processing and presentation of exogenous peptide antigen via MHC class I] GO:0042981 [regulation of apoptotic process] GO:0043066 [negative regulation of apoptotic process] GO:0043161 [proteasome-mediated ubiquitin-dependent protein catabolic process] GO:0043488 [regulation of mRNA stability] GO:0044281 [small molecule metabolic process] GO:0045087 [innate immune response] GO:0048010 [vascular endothelial growth factor receptor signaling pathway] GO:0048011 [neurotrophin TRK receptor signaling pathway] GO:0050852 [T cell receptor signaling pathway] GO:0051436 [negative regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle] GO:0051437 [positive regulation of ubiquitin-protein ligase activity involved in regulation of mitotic cell cycle transition] GO:0051439 [regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle] GO:0070062 [extracellular exosome] GO:0090090 [negative regulation of canonical Wnt signaling pathway] GO:0090263 [positive regulation of canonical Wnt signaling pathway]
MEMSAT3 predicted membrane proteins SPOCTOPUS predicted membrane proteins THUMBUP predicted membrane proteins Predicted intracellular proteins Plasma proteins FDA approved drug targets Small molecule drugs Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
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GO:0000082 [G1/S transition of mitotic cell cycle] GO:0000165 [MAPK cascade] GO:0000186 [activation of MAPKK activity] GO:0000209 [protein polyubiquitination] GO:0000278 [mitotic cell cycle] GO:0000502 [proteasome complex] GO:0002223 [stimulatory C-type lectin receptor signaling pathway] GO:0002474 [antigen processing and presentation of peptide antigen via MHC class I] GO:0002479 [antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent] GO:0004175 [endopeptidase activity] GO:0005488 [binding] GO:0005634 [nucleus] GO:0005654 [nucleoplasm] GO:0005829 [cytosol] GO:0005838 [proteasome regulatory particle] GO:0006521 [regulation of cellular amino acid metabolic process] GO:0006595 [polyamine metabolic process] GO:0006915 [apoptotic process] GO:0006977 [DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest] GO:0007173 [epidermal growth factor receptor signaling pathway] GO:0007264 [small GTPase mediated signal transduction] GO:0007265 [Ras protein signal transduction] GO:0007411 [axon guidance] GO:0008286 [insulin receptor signaling pathway] GO:0008540 [proteasome regulatory particle, base subcomplex] GO:0008543 [fibroblast growth factor receptor signaling pathway] GO:0010467 [gene expression] GO:0012501 [programmed cell death] GO:0016020 [membrane] GO:0016032 [viral process] GO:0022624 [proteasome accessory complex] GO:0030234 [enzyme regulator activity] GO:0031145 [anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process] GO:0033209 [tumor necrosis factor-mediated signaling pathway] GO:0034515 [proteasome storage granule] GO:0034641 [cellular nitrogen compound metabolic process] GO:0038061 [NIK/NF-kappaB signaling] GO:0038095 [Fc-epsilon receptor signaling pathway] GO:0042176 [regulation of protein catabolic process] GO:0042590 [antigen processing and presentation of exogenous peptide antigen via MHC class I] GO:0042981 [regulation of apoptotic process] GO:0043066 [negative regulation of apoptotic process] GO:0043161 [proteasome-mediated ubiquitin-dependent protein catabolic process] GO:0043488 [regulation of mRNA stability] GO:0044281 [small molecule metabolic process] GO:0045087 [innate immune response] GO:0048010 [vascular endothelial growth factor receptor signaling pathway] GO:0048011 [neurotrophin TRK receptor signaling pathway] GO:0050852 [T cell receptor signaling pathway] GO:0051436 [negative regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle] GO:0051437 [positive regulation of ubiquitin-protein ligase activity involved in regulation of mitotic cell cycle transition] GO:0051439 [regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle] GO:0070062 [extracellular exosome] GO:0090090 [negative regulation of canonical Wnt signaling pathway] GO:0090263 [positive regulation of canonical Wnt signaling pathway]