| 2009 |
RNF13 is an ER/Golgi membrane-associated E3 ubiquitin ligase; its RING finger domain is required for ubiquitin ligase activity, and overexpression of wild-type but not RING domain-mutant RNF13 increases invasive potential and MMP-9 gelatinolytic activity in pancreatic cancer cells. |
In vitro ubiquitin ligase assay, RING domain mutagenesis, cell invasion/gelatin zymography assays |
Cell Research |
High |
18794910
|
| 2009 |
RNF13 E3 ligase activity (intact RING finger) is required for its growth-suppressive function in muscle cells; RING domain mutations abolish inhibition of myoblast proliferation and suppression of MyoD/Caveolin-3 expression. Myostatin upregulates RNF13 expression at transcriptional and translational levels. |
RING domain mutagenesis, ectopic expression, proliferation assays, RT-PCR/western blot |
The FEBS Journal |
Medium |
20015074
|
| 2010 |
RNF13 localizes to endosomal membranes where it undergoes extensive proteasome-dependent proteolysis; the cytoplasmic RING-domain-containing fragment can be released from the membrane. Upon PKC activation, the full-length protein is stabilized and redistributes to recycling endosomes and the inner nuclear membrane, exposing the RING domain to the nucleoplasm. |
Subcellular fractionation, fluorescence microscopy, pharmacological PKC activation, proteasome inhibition |
The FEBS Journal |
Medium |
21078126
|
| 2013 |
RNF13 mediates ER stress-induced apoptosis upstream of the IRE1α–TRAF2–JNK signaling axis. RNF13 co-immunoprecipitates with IRE1α, and both the RING domain and transmembrane domain are required for JNK activation and apoptosis. Knockdown confers resistance to ER stress-induced apoptosis and JNK activation. |
Co-immunoprecipitation, genetic knockdown (retroviral insertion mutation screen), overexpression, caspase assays, knockdown epistasis panel |
Journal of Biological Chemistry |
High |
23378536
|
| 2013 |
RNF13 interaction with IRE1α increases IRE1α protein stability (cycloheximide chase), promotes XBP1 mRNA splicing, and activates JNK in neuroblastoma SH-SY5Y cells, confirming a conserved role in ER stress-mediated apoptosis. |
Co-immunoprecipitation, cycloheximide chase, overexpression, RT-PCR, western blot |
Journal of Receptor and Signal Transduction Research |
Medium |
24303962
|
| 2014 |
The PA (protease-associated) domain of RNF13 is required for its endosomal localization. PA domain point mutations identified in human tumours retain E3 ligase activity but cause mislocalization of the protein, indicating that both catalytic activity and endosomal targeting are required for substrate ubiquitylation. RING domain tumour mutations abrogate ubiquitin ligase activity. |
PA domain mutagenesis, RING domain mutagenesis, ubiquitin ligase assays, fluorescence microscopy for localization |
Biochemical Journal |
Medium |
24387786
|
| 2012 |
RNF13 directly interacts with snapin (a SNAP-25-interacting protein) and ubiquitinates snapin via K29-linked polyubiquitin chains, promoting snapin–SNAP-25 association and SNARE complex assembly. RNF13-null mice show impaired SNARE complex assembly and reduced snapin–SNAP-25 interaction, correlating with spatial learning deficits. |
Co-immunoprecipitation, in vitro ubiquitination assay with linkage determination, RNF13 knockout mouse, Morris water maze/Y-maze, electron microscopy of synapses |
Cellular and Molecular Life Sciences |
High |
22890573
|
| 2014 |
RNF13 expressed in macrophages suppresses skeletal muscle regeneration; RNF13-knockout mice show accelerated satellite cell proliferation and elevated IL-4/IL-6 in injured muscle. Blocking IL-4/IL-6 with antibodies abrogates the accelerated regeneration phenotype, placing RNF13 upstream of cytokine-mediated satellite cell niche regulation. |
RNF13 knockout mouse, cardiotoxin injury model, cytokine multiplex, antibody blocking, immunofluorescence |
Protein & Cell |
Medium |
24563216
|
| 2015 |
Host RNF13 reduces pulmonary colonization of metastatic tumor cells by maintaining GM-CSF levels in the lung; RNF13-knockout mice show reduced GM-CSF in tumor-bearing lungs and conditioned media from lung slices, correlating with enhanced metastatic foci. |
RNF13 knockout mouse, B16F10/LLC experimental metastasis model, cytokine ELISA, conditioned media experiments |
Protein & Cell |
Medium |
26197965
|
| 2018 |
Heterozygous gain-of-function variants in RNF13 (L311S, L312P) cause enhanced IRE1α-mediated stress signaling and increased stress-induced apoptosis in patient-derived cells, without altering RNF13 or IRE1α protein abundance. Structural modeling predicts surface location of variants without disrupting overall fold. |
Patient-derived cell lines, apoptosis assays, IRE1α signaling assays, structural modeling |
American Journal of Human Genetics |
Medium |
30595371
|
| 2020 |
RNF13 knockdown alleviates dopaminergic neuron damage and motor deficits in MPTP-induced Parkinson's disease mouse models and MPP+-treated SH-SY5Y cells by inhibiting the IRE1α–TRAF2–ASK1–JNK ER stress pathway, reducing apoptosis and Ca2+ elevation. |
shRNA knockdown in vivo and in vitro, western blot for pathway components, TUNEL/TH immunofluorescence, behavioral tests, Ca2+ measurement |
Journal of Molecular Neuroscience |
Medium |
32617872
|
| 2021 |
Disease-associated RNF13 variants L311S and L312P (dileucine motif) disrupt interaction with the AP-3 adaptor complex and endosomal/lysosomal localization, alter endosomal vesicle size, and affect EGF (but not transferrin) trafficking. Knockdown of AP-3 subunit AP3D1 similarly mislocalizes wild-type RNF13. |
GST-pulldown, co-immunoprecipitation, fluorescence microscopy, EGF/transferrin trafficking assays, AP3D1 knockdown |
Cells |
Medium |
34831286
|
| 2024 |
RNF13 mediates K48-linked polyubiquitination of LAMP-1 at residue K128, targeting LAMP-1 for proteasomal degradation. This suppresses lysosome maturation and thereby delays TLR lysosomal degradation, promoting endosomal TLR-mediated inflammatory signaling in macrophages. |
E3 ligase screen (103 ligases), ubiquitination assays with linkage and site identification (K128), proteasome inhibition, lysosomal acidification assays, TLR signaling readouts, patient PBMCs |
Advanced Science |
High |
39031743
|
| 2024 |
A glutamine-based secondary motif in the C-terminal region of RNF13 binds AP-1 adaptor complex (distinct from the dileucine/AP-3 motif), providing an alternative Golgi-to-endosome trafficking route when the dileucine motif is mutated. |
Biochemical interaction assays, co-immunoprecipitation, fluorescence microscopy in HeLa cells, mutagenesis of sorting motifs |
Journal of Cell Science |
Medium |
39206621
|
| 2023 |
RNF13 directly interacts with p62 (co-immunoprecipitation, GST pulldown) and promotes activation of the p62–NRF2–HO-1 signaling axis to protect against cardiac hypertrophy; p62 knockdown reverses the cardioprotective effect of RNF13 overexpression. |
Co-immunoprecipitation, GST-pulldown, RNF13 knockout and AAV9-overexpression mouse models, TAC cardiac hypertrophy model, RNA-seq, p62 knockdown epistasis |
Free Radical Biology & Medicine |
Medium |
37852547
|
| 2024 |
RNF13 protects neurons against ischemia-reperfusion injury by interacting with p62 (co-immunoprecipitation, GST-pulldown) and blocking TRIM21-mediated autophagy-dependent degradation of p62, thereby stabilizing p62–NRF2–HO-1 signaling and reducing apoptosis and inflammation. |
CRISPR/Cas9 knockout mice, co-immunoprecipitation, GST-pulldown, mass spectrometry, RNA-seq, immunofluorescence, I/R injury model |
Cell Communication and Signaling |
Medium |
39511649
|
| 2025 |
RNF13 regulates lysosomal positioning through pH- and Ca2+-dependent mechanisms: elevated intracellular pH deprotonates RNF13 at His332, enabling interaction with Ca2+-bound ALG-2, which activates RNF13 to ubiquitinate and degrade ARL8B, thereby inhibiting ARL8B-mediated anterograde lysosomal transport. Alkaline extracellular pH activates TRPML3 to increase lysosomal Ca2+, further enhancing RNF13 activity and driving perinuclear lysosomal positioning. |
His332 mutagenesis, co-immunoprecipitation of RNF13-ALG-2, ubiquitination assays for ARL8B, lysosomal positioning microscopy, TRPML3 channel pharmacology, pH manipulation |
Cell Reports |
High |
40714633
|
| 2025 |
RNF13 binds the small GTPase Arl8B (via Arl8B residues Glu22 and Phe55 and RNF13 residue Leu244), with modest preference for GDP-bound Arl8B. Disrupting this interaction redistributes lysosomes to the cell periphery and delays EGFR trafficking toward lysosomal degradation without affecting general endocytosis. |
AlphaFold structural modeling, co-immunoprecipitation, mutagenesis of interface residues, lysosomal positioning microscopy, EGFR trafficking assays |
The FEBS Journal |
Medium |
42206902
|
| 2025 |
RNF13 interacts with iduronate 2-sulfatase (IDS), preferentially binding an underglycosylated immature form, and its E3 ligase catalytic activity is required to generate this underglycosylated IDS form (which is otherwise rapidly degraded by the proteasome); RNF13 exerts a net protective effect on IDS. RNF13 forms a heterodimer with RNF167, altering both proteins' lysosomal trafficking and modifying IDS processing differently than either E3 ligase alone. |
Co-immunoprecipitation, AlphaFold3 prediction, western blot glycosylation analysis, E3 ligase mutants, proteasome inhibition, site-directed mutagenesis (Asn246) |
The FEBS Journal |
Medium |
41387381
|
| 2025 |
RNF13 variants L311S and L312P are trafficked through an AP-1-dependent pathway in neurons and accumulate at higher levels in dendrites than wild-type RNF13. These variants alter early endosome (EEA1+) distribution in dendrites, reduce distal lysosome (Lamp1+) presence, fail to increase PSD-95 in distal dendrites, and decrease total Gephyrin puncta, acting primarily as dominant negatives for AP-3-dependent ubiquitin ligase function. |
Primary rat hippocampal neuron culture, fluorescence microscopy, dominant-negative constructs, AP-3 defective binding variants |
IBRO Neuroscience Reports |
Medium |
40276023
|