| 2002 |
Nrdp1/FLRF is a RING finger-type E3 ubiquitin ligase that physically associates with ErbB3, ubiquitinates ErbB3 and itself in the presence of E2 enzyme UbcH5, and promotes proteasomal degradation of ErbB3. The RING finger domain is required for enhancing ErbB3 degradation, while the C-terminal half alone associates with ErbB3 and acts as a dominant-negative. |
Cell-free ubiquitination assay, co-immunoprecipitation, domain deletion/mutagenesis, proteasome inhibitor experiments |
Proceedings of the National Academy of Sciences of the United States of America |
High |
12411582
|
| 2004 |
Nrdp1 associates with and ubiquitinates BRUCE/apollon (a 530 kDa IAP) in vitro (with E2 UbcH5c) and in vivo, promoting its proteasomal degradation. Apoptotic stimuli induce BRUCE degradation in a Nrdp1-dependent manner; RNAi knockdown of Nrdp1 reduces apoptosis-induced BRUCE loss. Overexpression of Nrdp1 or knockdown of BRUCE promotes apoptosis. |
In vitro ubiquitination assay, co-immunoprecipitation, RNA interference, overexpression apoptosis assays |
The EMBO journal |
High |
14765125
|
| 2004 |
Nrdp1 undergoes efficient proteasome-dependent self-ubiquitination (autoubiquitination), and RING finger mutations that disrupt ligase activity enhance Nrdp1 stability. The deubiquitinating enzyme USP8 physically interacts with Nrdp1 via its rhodanese and catalytic domains, and USP8 markedly stabilizes Nrdp1; a catalytically dead USP8 mutant destabilizes endogenous Nrdp1. |
Affinity chromatography, co-immunoprecipitation, stability/pulse-chase analysis, point mutagenesis of USP8 catalytic residue |
Molecular and cellular biology |
High |
15314180
|
| 2005 |
Nrdp1 physically interacts with Parkin (validated by in vitro binding, co-IP, and co-localization), ubiquitinates Parkin, and accelerates Parkin degradation (reducing half-life from ~5 h to ~2.5 h), thereby reducing Parkin activity and reversing Parkin-mediated degradation of its substrate CDCrel-1. |
Yeast two-hybrid, in vitro binding assay, co-immunoprecipitation, immunofluorescence co-localization, pulse-chase experiment |
The Journal of biological chemistry |
High |
15632191
|
| 2006 |
Crystal structure of the C-terminal domain of Nrdp1/FLRF was solved at 1.95 Å. This domain is sufficient to mediate ErbB3 binding. Site-directed mutagenesis mapped the ErbB3-binding surface to a region conserved from invertebrates to vertebrates, localizing the substrate-recognition site. |
X-ray crystallography, site-directed mutagenesis, ErbB3-binding and degradation assays in transfected cells |
Protein science : a publication of the Protein Society |
High |
17384230
|
| 2006 |
Crystal structure of the USP8 rhodanese domain in complex with Nrdp1 reveals that Nrdp1 has a novel protein fold that interacts with a conserved peptide loop of the rhodanese domain; a consensus sequence of this loop is found in other Nrdp1 targets, suggesting a common interaction mode. The amino-terminal domain of USP8 forms a homodimer. |
X-ray crystallography, structural analysis of Nrdp1–USP8 rhodanese domain complex |
The Journal of biological chemistry |
High |
17035239
|
| 2007 |
NRG1 (neuregulin-1) treatment stabilizes USP8 through Akt-mediated phosphorylation of USP8 Thr907, which in turn stabilizes Nrdp1. Nrdp1 and USP8 knockdown both suppress NRG1-induced ErbB3 ubiquitination and degradation, establishing a NRG1→Akt→USP8→Nrdp1→ErbB3 protein stability cascade. |
siRNA knockdown, pharmacological inhibitors, phosphorylation site mutagenesis (T907), ErbB3 ubiquitination/degradation assays |
Molecular and cellular biology |
High |
17210635
|
| 2008 |
Nrdp1 (FLRF) overexpression in hematopoietic progenitor cells decreases steady-state levels of IL-3 receptor, EPO receptor, and RARα, and attenuates cytokine- and retinoic acid-induced erythroid/myeloid differentiation. Immunoprecipitation shows FLRF physically interacts with IL-3R, EPOR, and RARα in a ligand-independent manner. |
Overexpression in hematopoietic progenitor cell lines, immunoprecipitation, hematopoietic colony-forming assays, Western blot |
Experimental hematology |
Medium |
18495327
|
| 2008 |
Nrdp1 ubiquitinates Parkin in vitro and in cells in a dosage-dependent, proteasome-dependent manner. Overexpression of Nrdp1 increases reactive oxygen species (ROS) production, which is abrogated by co-expression of Parkin; Nrdp1 shRNA knockdown reduces ROS levels. |
In vitro ubiquitination assay, overexpression/knockdown in SH-SY5Y cells, ROS measurement |
Neuroscience letters |
Medium |
18541373
|
| 2009 |
Nrdp1 directly binds and polyubiquitinates MyD88 (leading to its proteasomal degradation) and TBK1 (leading to its activation, not degradation), thereby suppressing MyD88-dependent NF-κB/AP-1 activation while promoting TBK1/IRF3-dependent IFN-β production in TLR-triggered macrophages. Nrdp1 knockdown inhibits MyD88 degradation and TBK1/IRF3 activation. |
Co-immunoprecipitation, in vivo ubiquitination assay, siRNA knockdown, transgenic mouse model (LPS challenge, VSV infection) |
Nature immunology |
High |
19483718
|
| 2010 |
RNF41 interacts with JAK2-associated cytokine receptor complexes (leptin receptor, LIF receptor, IL-6 receptor) and controls their surface levels dually: ectopic RNF41 blocks intracellular cathepsin-L-dependent receptor cleavage while enhancing ADAM metalloprotease-dependent ectodomain shedding. |
Co-immunoprecipitation, pharmacological inhibitors of cathepsin L and ADAMs, receptor surface/shedding assays |
Journal of cell science |
Medium |
21378310
|
| 2010 |
Androgen receptor (AR) transcriptionally upregulates Nrdp1 in androgen-dependent prostate cancer cells; AR activation promotes ErbB3 degradation in a Nrdp1-dependent manner. In castration-resistant prostate cancer, this AR-Nrdp1 regulatory axis is lost, leading to constitutively suppressed Nrdp1 and elevated ErbB3. |
Androgen withdrawal/AR activation experiments, Nrdp1 promoter analysis, Western blot for ErbB3 and Nrdp1, mouse xenograft model |
Cancer research |
Medium |
20587519
|
| 2012 |
Nrdp1 interacts with and mediates K63-linked polyubiquitination of the transcription factor C/EBPβ, which enhances C/EBPβ transcriptional activity and promotes M2 macrophage polarization (upregulation of Arg1 and other M2 markers) in response to IL-4. This represents a non-proteolytic ubiquitin-dependent pathway. |
Immunoprecipitation, K63-linked ubiquitination assay, reporter gene assay (Arg1 promoter), Nrdp1 knockdown/transgenic macrophages |
The Journal of biological chemistry |
High |
22707723
|
| 2013 |
RNF41 ubiquitinates USP8 and reduces USP8 protein levels, redistributing USP8 from ESCRT-0-associated compartments to RNF41 bodies. Loss of USP8 destabilizes the ESCRT-0 complex and blocks lysosomal degradation of cytokine receptors while promoting their recycling. USP8 knockdown phenocopies RNF41 overexpression on leptin and LIF receptor trafficking. |
Immunoprecipitation, ubiquitination assays, USP8 siRNA knockdown, ESCRT-0 stability assays, receptor trafficking experiments |
Journal of cell science |
High |
23750007
|
| 2013 |
Par-1b (MARK2) kinase binds to and phosphorylates RNF41 on serine 254. This phosphorylation is required for epithelial cells to localize laminin-111 receptors to their basolateral surfaces, to properly anchor to laminin-111, and to establish apical-basal polarity. |
Kinase assay, phosphorylation site mutagenesis (S254), co-immunoprecipitation, laminin receptor localization assays, polarity assays |
Journal of cell science |
Medium |
24259665
|
| 2014 |
Nrdp1 self-associates into a stable oligomeric complex in cells via its coiled-coil domain. Deletion of the coiled-coil domain abolishes oligomerization but does not affect ErbB3 ubiquitination/degradation. The coiled-coil domain is required for efficient Nrdp1 autoubiquitination via a trans mechanism, demonstrating that autoubiquitination and substrate ubiquitination are functionally separable. |
Chemical cross-linking, size exclusion chromatography, native PAGE, co-immunoprecipitation, domain deletion mutagenesis, ubiquitination assays |
The Journal of biological chemistry |
High |
24519943
|
| 2015 |
Nrdp1 mediates K33-linked polyubiquitination of Zap70, which promotes dephosphorylation of Zap70 by phosphatases Sts1 and Sts2, thereby terminating early TCR signaling in CD8+ T cells. Nrdp1 physically interacts with Zap70 and with Sts1/Sts2 and connects K33-linked ubiquitin modification to Sts-mediated dephosphorylation. |
Co-immunoprecipitation, K33-specific ubiquitination assay, Nrdp1-deficient mouse T cells, Zap70 phosphorylation assays, Sts1/Sts2 dephosphorylation assays |
Nature immunology |
High |
26390156
|
| 2015 |
Nuclear filamin A (FLNA) is required for AR binding to the Nrdp1 androgen response element (ARE) and AR-mediated Nrdp1 transcription. Restoration of nuclear FLNA in castration-resistant prostate cancer cells re-establishes AR binding to the Nrdp1 promoter, increases Nrdp1 transcription and protein expression, and restores androgen responsiveness. |
ChIP assay, promoter ARE binding, nuclear FLNA restoration, qRT-PCR, Western blot |
Endocrine-related cancer |
Medium |
25759396
|
| 2016 |
Lenalidomide promotes EpoR/RNF41 association and inhibits RNF41 auto-ubiquitination, leading to reduced EpoR ubiquitination and stabilization of EpoR at the cell surface. This effect is cereblon-independent. RNF41 overexpression reduces steady-state EpoR levels, and lenalidomide-induced EpoR upregulation is abrogated when cellular RNF41 is overexpressed. |
Co-immunoprecipitation, auto-ubiquitination assay, EpoR/RNF41 transfection, shRNA knockdown of CRBN, flow cytometry for EpoR surface levels |
Cancer research |
Medium |
27197154
|
| 2017 |
Nrdp1 physically interacts with VANGL1 and VANGL2 (PCP pathway components) and mediates K63-linked polyubiquitination of the DEP domain of Dishevelled (Dvl). This ubiquitination impairs Dvl binding to phosphatidic acid, blocking Dvl recruitment to the plasma membrane upon Wnt/Fzd stimulation and thereby suppressing PCP signaling and GBM cell migration. |
Co-immunoprecipitation, K63 ubiquitination assay, Dvl-phosphatidic acid binding assay, siRNA knockdown, migration/invasion assays |
Oncogene |
Medium |
28481871
|
| 2017 |
RNF41 interacts with VPS52 (a subunit of the GARP and EARP complexes) via coiled-coil domain interactions. RNF41 ubiquitinates VPS52 and relocates it away from VPS53 (another GARP/EARP subunit) towards RNF41 bodies, revealing a role for RNF41 in regulating intracellular vesicle trafficking machinery. |
Array MAPPIT protein-protein interaction screen, co-immunoprecipitation, ubiquitination assay, co-localization microscopy |
PloS one |
Medium |
28542518
|
| 2017 |
RNF41 ubiquitinates SGT1 in a phosphorylation-dependent manner, promoting SGT1 degradation and causing defective kinetochore assembly. The phosphatase PHLPP1 dephosphorylates SGT1 at Ser-17, Ser-249, Ser-289, and Thr-233, preventing SGT1 association with RNF41 and thereby protecting it from degradation. Depletion of RNF41 or expression of non-phosphorylatable SGT1 rescues kinetochore defects caused by PHLPP1 loss. |
Co-immunoprecipitation, ubiquitination assay, phosphorylation site mutagenesis, PHLPP1/RNF41 knockdown, kinetochore assembly assays |
The Journal of biological chemistry |
Medium |
28696259
|
| 2017 |
Clec16a, Nrdp1, and USP8 form a tripartite ubiquitin-dependent complex that regulates β-cell mitophagy. Clec16a is an E3 ligase that promotes nondegradative ubiquitin conjugates to stabilize the complex. RNF41/Nrdp1 is a component of this mitophagy regulatory complex in pancreatic β-cells and is required for mitochondrial quality control, oxygen consumption, and insulin secretion. |
Co-immunoprecipitation, ubiquitination assay, genetic knockdown/overexpression in β-cells, mitophagy flux assays, metabolic readouts |
Diabetes |
Medium |
29180353
|
| 2018 |
RNF41 was identified as a driver of anti-HER3 antibody (IgG 95) anti-proliferative activity via shRNA library screen. RNF41 is responsible for HER3 ubiquitination and downregulation upon antibody treatment, and RNF41 downregulation itself is a mechanism for acquired resistance to anti-HER3 antibody treatment. |
shRNA library screen (ubiquitin proteasome system), HER3 ubiquitination assay, receptor internalization/degradation assay |
The Journal of biological chemistry |
Medium |
30523157
|
| 2018 |
AP2S1 (a clathrin adaptor subunit) was identified as an RNF41 interaction partner by multi-orthogonal interactome screen. RNF41 stabilizes and relocates AP2S1, and AP2S1 plays a role in leptin and LIF receptor signaling downstream of RNF41. |
Affinity purification-mass spectrometry, BioID, Virotrap, microarray MAPPIT, Y2H, functional validation with AP2S1 knockdown/overexpression |
Journal of proteome research |
Medium |
29560723
|
| 2019 |
RNF41 binds CACYBP via its C-terminal substrate-binding domain, ubiquitinates CACYBP, and promotes its degradation via both proteasome- and lysosome-dependent pathways. RNF41-mediated CACYBP degradation attenuates CACYBP-induced Ser10 phosphorylation and cytoplasmic retention of p27Kip1, thereby restricting cell cycle progression. |
Co-immunoprecipitation, ubiquitination assay, proteasome/lysosome inhibitor experiments, immunofluorescence for p27 localization, cell cycle assays |
Theranostics |
Medium |
31754404
|
| 2020 |
RNF41 directly binds and ubiquitinates the extracellular domains of the dendritic cell receptor Clec9A. At steady-state, RNF41 ubiquitination of Clec9A facilitates interactions with ER-associated degradation proteins to control Clec9A levels; following dead cell uptake, Clec9A interactions shift to favor antigen cross-presentation. RNF41 is a negative regulator of Clec9A-mediated cross-presentation. |
Co-immunoprecipitation, ubiquitination assay targeting extracellular domain, RNF41 knockout dendritic cells, antigen cross-presentation assays |
eLife |
High |
33264090
|
| 2021 |
A20 interacts with Nrdp1/RNF41 in LPS-stimulated cells. The ZnF4 domain of A20 is required for Nrdp1 polyubiquitination. A20 knockout decreases K48-linked ubiquitination of MyD88 (reducing its degradation) but increases K63-linked ubiquitination of TBK1. Combined A20 and Nrdp1 inhibition shows that A20/Nrdp1 interaction is important for A20 anti-inflammatory effects by modulating the balance between MyD88 degradation and TBK1 activation. |
Mass spectrometry screen, co-immunoprecipitation, A20 knockout, Nrdp1 knockdown, linkage-specific ubiquitination assays, domain mutagenesis (ZnF4), cytokine secretion assays |
The Journal of biological chemistry |
Medium |
34023381
|
| 2021 |
NRDP1 is present in both cytoplasm and nucleus of prostate cancer cells. Its nuclear translocation is associated with androgen receptor (AR) activity; binding of NRDP1 to AR requires the AR hinge region. Nuclear NRDP1 retains ubiquitin ligase activity. |
Subcellular fractionation, immunohistochemistry, immunofluorescence with confocal microscopy, co-immunoprecipitation with AR constructs, HA-ubiquitin co-transfection assay |
Cancers |
Medium |
34503235
|
| 2022 |
RNF41 promotes ubiquitination and degradation of ASB6 through direct interaction mediated by binding to FXR2 (which stabilizes RNF41 mRNA). Silencing RNF41 counteracts circFNDC3B-mediated suppression of colorectal cancer stemness and metastasis, placing RNF41-mediated ASB6 degradation downstream of the circFNDC3B-FXR2 axis. |
Co-immunoprecipitation, RNA immunoprecipitation, RNA pull-down, ubiquitination assay, siRNA knockdown, in vivo xenograft |
Cell death & disease |
Medium |
36446779
|
| 2023 |
The CLEC16A internal intrinsically disordered protein region (IDPR) is the site where RNF41 binds and acts to destabilize CLEC16A, promoting its degradation and thereby controlling the reciprocal regulatory balance within the CLEC16A-RNF41-USP8 mitophagy complex. Loss of this IDPR also destabilizes the tripartite complex. |
NMR and CD spectroscopy (IDPR confirmation), co-immunoprecipitation, ubiquitination assays, deletion mutagenesis of IDPR |
The Journal of biological chemistry |
Medium |
36822331
|
| 2023 |
Global deletion of Nrdp1 in mice leads to male infertility by disrupting autophagy-associated acrosome biogenesis and mitochondrial arrangement during spermiogenesis. Nrdp1 deletion increases Parkin levels but decreases SIP/CacyBP, Drp1, and Tim23 in sperm, inhibiting autophagy. This establishes a functional role for Nrdp1 in promoting autophagy during spermiogenesis via its known substrates. |
Nrdp1 knockout mouse, quantitative proteomics, autophagy flux assays, Western blot, sperm morphology analysis |
Cells |
Medium |
37759433
|
| 2024 |
RNF41 induces K27- and K63-linked non-canonical polyubiquitination of MYO1C to enhance its stability, which promotes actin remodeling and prostate cancer bone metastasis. RNF41 silencing reduces MYO1C levels and suppresses metastasis in an intra-arterial bone metastasis xenograft model. |
Co-immunoprecipitation, K27/K63-specific ubiquitination assay, RNF41 silencing, in vitro migration/invasion assays, in vivo bone metastasis xenograft model |
Oncogene |
Medium |
39112516
|
| 2024 |
VEGF activates CHIP, which triggers Nrdp1 degradation in vascular endothelial cells. Nrdp1 deficiency increases secretion of Fam20C (a secretory kinase), which induces degradation of extracellular matrix and disrupts vascular basement membrane integrity, thereby promoting tumor metastasis. Nrdp1 normally targets Fam20C for degradation to maintain vascular basement membrane integrity. |
Conditional Nrdp1 knockout mice (endothelial-specific), co-immunoprecipitation, ubiquitination assay, Fam20C secretion assay, in vivo lung metastasis model, VEGF treatment experiments |
Oncogene |
Medium |
38654108
|
| 2025 |
RNF41 directly interacts with NUDC and ubiquitinates it to promote its proteasomal degradation. RNF41 loss leads to increased NUDC stability, which enhances β-tubulin polymerization and promotes bladder cancer lung metastasis. |
Co-immunoprecipitation, ubiquitination assay, RNF41 knockdown and overexpression, in vitro migration/invasion assays, tail vein lung metastasis model |
Cell death & disease |
Medium |
40494872
|