| 2001 |
Dorfin/RNF19A contains two RING-finger motifs and an IBR motif at its N-terminus, binds specifically to ubiquitin-conjugating enzymes UbcH7 and UbcH8 through the RING-finger/IBR domain, and mediates ubiquitin ligase (E3) activity; partial deletion of the RING-finger/IBR domain eliminated these interactions and ubiquitination activity. Dorfin is a short-lived protein that accumulates upon proteasome inhibition. It is localized to the centrosome. |
Co-immunoprecipitation, domain deletion mutagenesis, proteasome inhibitor treatment (MG132), subcellular localization by immunofluorescence |
Biochemical and biophysical research communications |
High |
11237715
|
| 2002 |
Dorfin/RNF19A physically binds and ubiquitylates mutant SOD1 proteins (from familial ALS patients) but not wild-type SOD1, enhancing their proteasomal degradation; overexpression of Dorfin protects neural cells from mutant SOD1 toxicity and reduces SOD1 inclusion bodies. Dorfin localizes to inclusion bodies in familial and sporadic ALS motor neurons. |
Co-immunoprecipitation, in vitro ubiquitination assay, overexpression with toxicity rescue assay, immunohistochemistry/immunofluorescence localization |
The Journal of biological chemistry |
High |
12145308
|
| 2003 |
Dorfin/RNF19A localizes to ubiquitylated inclusions (Lewy bodies, glial cell inclusions, hyaline inclusions) in Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, and ALS, showing a distribution pattern parallel to ubiquitin. However, direct binding of alpha-synuclein to Dorfin was not detected (negative result). |
Immunohistochemistry with affinity-purified antibody, double immunofluorescence, filter trap assay |
The American journal of pathology |
Medium |
12875980
|
| 2004 |
Valosin-containing protein (VCP/p97) directly binds to Dorfin/RNF19A through the C-terminal region of Dorfin, forms an endogenous ~400–600 kDa complex with Dorfin, and VCP ATPase activity is required for the E3 ubiquitin ligase activity of Dorfin toward mutant SOD1; a dominant-negative VCP(K524A) reduced Dorfin E3 activity but had no effect on Parkin autoubiquitylation. Both proteins co-localize in aggresomes and ubiquitylated inclusions in ALS and PD neurons. |
Mass spectrometry identification, glycerol gradient centrifugation, co-immunoprecipitation, in vitro direct binding, dominant-negative VCP functional assay, immunofluorescence co-localization |
The Journal of biological chemistry |
High |
15456787
|
| 2004 |
Dorfin/RNF19A significantly reduces mutant SOD1 levels in mitochondria, thereby decreasing cytochrome c release and caspase cascade activation, and preventing neuronal cell death in a neuronal cell model of familial ALS. |
Overexpression in neuronal cell model, subcellular fractionation (mitochondrial fraction), cytochrome c release assay, caspase activation assay |
Journal of neurochemistry |
Medium |
15030390
|
| 2006 |
Dorfin/RNF19A binds the intracellular carboxyl terminus of the calcium-sensing receptor (CaR) (identified by yeast two-hybrid and confirmed by co-immunoprecipitation), ubiquitinates CaR, and promotes its proteasomal degradation from the endoplasmic reticulum; mutation of all putative intracellular lysine residues abolished CaR ubiquitination. VCP/p97 associates with both CaR and Dorfin. A dominant-negative Dorfin fragment had opposite (stabilizing) effects on CaR. |
Yeast two-hybrid, co-immunoprecipitation, ubiquitination assay, dominant-negative construct, lysine mutagenesis, tunicamycin/MG132 treatment, endoglycosidase assay |
The Journal of biological chemistry |
High |
16513638
|
| 2006 |
Dorfin-CHIP chimeric proteins containing the substrate-binding domain of Dorfin and the U-box domain of CHIP are more stable in cells than wild-type Dorfin, more effectively ubiquitylate mutant SOD1 in vivo, degrade mutant SOD1 more rapidly, reduce aggresome formation, and rescue neuronal cells from mutant SOD1 toxicity better than wild-type Dorfin. |
Chimeric protein engineering, in vivo ubiquitination assay, cell viability assay, aggresome quantification, pulse-chase/protein stability assay |
Neurobiology of disease |
Medium |
17157513
|
| 2009 |
Rnf19a interacts with Psmc3, a component of the 19S regulatory cap of the 26S proteasome, in rat spermatids; during spermatid development, Rnf19a and Psmc3 are found in Golgi-derived proacrosomal vesicles, along acrosomal membranes, the acroplaxome, the marginal ring, and in the developing head-tail coupling apparatus, implicating the ubiquitin-proteasome system in acrosome biogenesis and spermatid head shaping. |
Co-immunoprecipitation, immunofluorescence co-localization during spermatogenesis, cDNA cloning and sequence analysis |
Developmental dynamics |
Medium |
19517565
|
| 2010 |
Overexpression of human Dorfin/RNF19A in G93A mutant SOD1 transgenic mice decreased mutant SOD1 protein levels in spinal cord, ameliorated neurological phenotypes, and reduced motor neuron degeneration in vivo. |
Transgenic mouse overexpression, immunoblotting of spinal cord proteins, neurological phenotype scoring, motor neuron histology |
Journal of neuroscience research |
Medium |
19610091
|
| 2015 |
Dorfin/RNF19A is a novel binding partner of the excitatory postsynaptic scaffolding protein PSD-95. Dorfin-knockout mice show reduced adult neurogenesis and enhanced long-term potentiation in the hippocampal dentate gyrus but normal LTP in CA1, impaired contextual fear conditioning, and decreased ubiquitination of multiple brain proteins identified by proteomics. |
Co-immunoprecipitation (PSD-95 interaction), knockout mouse phenotyping, electrophysiology (LTP), behavioral testing, proteomic ubiquitinome analysis |
Scientific reports |
High |
26553645
|
| 2017 |
RNF19A is recruited by NLRP11 to catalyze K48-linked ubiquitination of TRAF6 at multiple sites, leading to proteasomal degradation of TRAF6 and attenuation of TLR signaling; deficiency of either NLRP11 or RNF19A abrogates K48-linked ubiquitination and degradation of TRAF6, promoting NF-κB and MAPK activation and increased proinflammatory cytokine production. |
Co-immunoprecipitation, ubiquitination assay (K48-linkage specific), siRNA/shRNA knockdown, overexpression, NF-κB/MAPK pathway readouts, cytokine measurement |
Nature communications |
High |
29215004
|
| 2021 |
RNF19A ubiquitinates BARD1, causing dissociation of the BRCA1-BARD1 heterodimer and exposing a nuclear export sequence in BARD1 that is otherwise masked by BRCA1, resulting in cytoplasmic export of BARD1. This suppresses homologous recombination and increases cancer cell sensitivity to PARP inhibitors. |
Co-immunoprecipitation, ubiquitination assay, nuclear export sequence mapping, cellular fractionation, HR assay, PARP inhibitor sensitivity assay, overexpression and knockdown |
Nature communications |
High |
34789768
|
| 2022 |
RNF19A mediates K48-linked ubiquitination and proteasomal degradation of TBK1; silencing of RNF19A enhanced type I interferon production and suppressed RNA viral replication, indicating that RNF19A acts as a negative regulator of the RIG-I signaling pathway. |
Co-immunoprecipitation, K48-linked ubiquitination assay, siRNA knockdown, viral replication assay, IFN production measurement |
Molecular immunology |
Medium |
34990937
|
| 2023 |
RNF19A ubiquitinates RIG-I (DDX58), mediating its degradation and negatively regulating neuroinflammation during Japanese encephalitis virus infection; H3K27me3 modification of the Rnf19a locus (mediated by EZH2) increases upon JEV infection, downregulating Rnf19a expression and thereby relieving suppression of RIG-I. |
ChIP-sequencing (H3K27me3), EZH2 knockdown/inhibitor treatment, ubiquitination assay (RIG-I as substrate), co-immunoprecipitation, cytokine measurements, in vitro and in vivo JEV infection model |
Journal of neuroinflammation |
Medium |
37480121
|
| 2023 |
RNF19A ubiquitylates TRIP13, promoting its degradation; RNF19A is transcriptionally activated by androgen receptor (AR) and HIF1A in prostate cancer cells, establishing an AR/HIF1A–RNF19A–TRIP13 signaling axis. |
CRISPR screening (656 E3 ligases), ubiquitination proteomic analysis, quantitative proteomics, transcriptomics, co-immunoprecipitation |
Drug resistance updates |
Medium |
36623445
|
| 2024 |
RNF19A directly interacts with ILK (integrin-linked kinase) and promotes its K48-linked ubiquitination and proteasomal degradation, thereby inactivating the AKT/mTOR signaling pathway and suppressing bladder cancer cell proliferation, migration, and invasion. |
Co-immunoprecipitation, ubiquitination assay, cycloheximide chase, rescue experiments (ILK overexpression/knockdown), western blot for p-AKT/p-mTOR/p-S6K1 |
Biology direct |
Medium |
39508245
|
| 2025 |
RNF19A promotes K48-linked ubiquitination and degradation of MKP-1 (DUSP1) in fibroblast-like synoviocytes, activating the MAPK signaling pathway; this facilitates nuclear translocation of the transcription factor ZBTB20, which in turn transcriptionally upregulates RNF19A, forming a positive feedback loop contributing to methotrexate resistance in rheumatoid arthritis. |
Co-immunoprecipitation, ubiquitination assay, overexpression/knockdown, western blot for MAPK pathway, nuclear/cytoplasmic fractionation, ChIP/reporter assay for ZBTB20 regulation, in vivo validation |
Cellular and molecular life sciences |
Medium |
40293542
|
| 2026 |
RNF19A interacts with MST1 (STK4), mediates K48-linked ubiquitination of MST1 leading to its degradation, inhibiting the Hippo/YAP pathway by reducing YAP phosphorylation and increasing nuclear YAP levels, thereby promoting gastric cancer cell growth and metastasis. |
Co-immunoprecipitation, in vivo ubiquitylation assay, protein half-life assay, nuclear/cytoplasmic fractionation, immunofluorescence, xenograft and metastasis models, rescue by MST1 knockdown |
International immunopharmacology |
Medium |
41506118
|