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NUPR1
Chromatin-binding protein that converts stress signals into a program of gene expression that empowers cells with resistance to the stress induced by a change in their microenvironment. Interacts with MSL1 and inhibits its activity on histone H4 Lys-16 acetylation (H4K16ac). Binds the RELB promoter and activates its transcription, leading to the transactivation of IER3. The NUPR1/RELB/IER3 survival pathway may provide pancreatic ductal adenocarcinoma with remarkable resistance to cell stress, such as starvation or gemcitabine treatment. In breast cancer cells, NUPR1 overexpression leads to the activation of PI3K/AKT signaling pathway, CDKN1A/p21 phosphorylation and relocalization from the nucleus to the cytoplasm, leading to resistance to chemotherapeutic agents, such as doxorubicin.
Predicted location
Intracellular
Single cell type specificity
Cell type enhanced (Basal respiratory cells)
Immune cell specificity
Immune cell enhanced (basophil)
Cell line specificity
Cell line enhanced (HHSteC, hTCEpi, SK-MEL-30, T-47d, U-87 MG)
Interaction
Monomer. Directly interacts with MSL1 and binds MORF4L1, two components of histone acetyltransferase complex; the interaction with MORF4L1 may be mediated by MSL1 (PubMed:19650074). Interacts with EP300; this interaction enhances the effect of EP300 on PAX2 transcription factor activity (PubMed:11940591). Interacts with PAXIP1; this interaction prevents PAXIP1 inhibition of PAX2 transcription factor activity (PubMed:11940591). Interacts with COPS5; this interaction allows COPS5-dependent CDKN1B nuclear to cytoplasm translocation (PubMed:16300740). Interacts with RNF2 (PubMed:28720707). Interacts with FOXO3; this interaction represses FOXO3 transactivation (PubMed:20181828). Interacts with PTMA; negatively regulates apoptotic process (PubMed:16478804). Interacts with MYOD1, EP300 and DDX5; this interaction coordinates the association of anti-proliferative and pro-myogenic proteins at the myogenin promoter (PubMed:19723804) (By similarity). Interacts with TP53; interaction is stress-dependent (PubMed:18690848). Forms a complex with EP300 and TP53; this complex binds CDKN1A promoter leading to transcriptional induction of CDKN1A (PubMed:18690848).
Molecular function
Activator, DNA-binding
More Types Infomation
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- Species Reactivity: Human
- Type: Mouse antibody
- Application: ELISA, WB
- Recombinant Mouse Anti-NUPR1 Antibody (VS-0923-FY215) (VS-0923-FY215)
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- Species Reactivity: Human
- Type: Mouse IgG2b
- Application: ELISA, WB
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For Research Use Only. Not For Clinical Use.