FUNCTION: May act as an oxidative stress mediator by inhibiting thioredoxin activity or by limiting its bioavailability. Interacts with COPS5 and restores COPS5-induced suppression of CDKN1B stability, blocking the COPS5-mediated translocation of CDKN1B from the nucleus to the cytoplasm. Functions a...
FUNCTION: May act as an oxidative stress mediator by inhibiting thioredoxin activity or by limiting its bioavailability. Interacts with COPS5 and restores COPS5-induced suppression of CDKN1B stability, blocking the COPS5-mediated translocation of CDKN1B from the nucleus to the cytoplasm. Functions as a transcriptional repressor, possibly by acting as a bridge molecule between transcription factors and corepressor complexes, and over-expression will induce G0/G1 cell cycle arrest. Required for the maturation of natural killer cells. Acts as a suppressor of tumor cell growth. Inhibits the proteasomal degradation of DDIT4, and thereby contributes to the inhibition of the mammalian target of rapamycin complex 1 (mTORC1). {ECO:0000269|PubMed:12821938, ECO:0000269|PubMed:17603038, ECO:0000269|PubMed:18541147, ECO:0000269|PubMed:21460850}.
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GO - Biological processes (BP):
cell cycle [GO:0007049]; cellular response to tumor cell [GO:0071228]; keratinocyte differentiation [GO:0030216]; negative regulation of cell division [GO:0051782]; negative regulation of transcription by RNA polymerase II [GO:0000122]; platelet-derived growth factor receptor signaling pathway [GO:0...
cell cycle [GO:0007049]; cellular response to tumor cell [GO:0071228]; keratinocyte differentiation [GO:0030216]; negative regulation of cell division [GO:0051782]; negative regulation of transcription by RNA polymerase II [GO:0000122]; platelet-derived growth factor receptor signaling pathway [GO:0048008]; positive regulation of apoptotic process [GO:0043065]; protein import into nucleus [GO:0006606]; protein transport [GO:0015031]; regulation of cell population proliferation [GO:0042127]; response to calcium ion [GO:0051592]; response to estradiol [GO:0032355]; response to glucose [GO:0009749]; response to hydrogen peroxide [GO:0042542]; response to mechanical stimulus [GO:0009612]; response to progesterone [GO:0032570]; response to xenobiotic stimulus [GO:0009410]
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GO - Molecular function (MF):
enzyme inhibitor activity [GO:0004857]; ubiquitin protein ligase binding [GO:0031625]...
enzyme inhibitor activity [GO:0004857]; ubiquitin protein ligase binding [GO:0031625]
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GO - Cellular component (CC):
cytoplasm [GO:0005737]; cytosol [GO:0005829]; mitochondrial intermembrane space [GO:0005758]; nucleus [GO:0005634]...
cytoplasm [GO:0005737]; cytosol [GO:0005829]; mitochondrial intermembrane space [GO:0005758]; nucleus [GO:0005634]
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