| 2002 |
ERdj5 (DNAJC10) interacts with BiP via its DnaJ domain in an ATP-dependent manner, and localizes to the ER lumen; it contains DnaJ, protein-disulfide isomerase, and thioredoxin domains. |
In vitro binding assay (DnaJ domain-BiP interaction), immunofluorescence/subcellular fractionation for ER localization |
The Journal of biological chemistry |
Medium |
12411443
|
| 2008 |
ERdj5 functions as a disulfide reductase that cleaves disulfide bonds of misfolded proteins in the ER, physically associates with EDEM and BiP as part of a supramolecular ERAD complex, and accelerates retrotranslocation of ERAD substrates. |
In vitro reductase assay, co-immunoprecipitation (ERdj5-EDEM and ERdj5-BiP), siRNA knockdown with ERAD substrate degradation readout |
Science (New York, N.Y.) |
High |
18653895
|
| 2008 |
ERdj5 and ERdj4 associate with misfolded surfactant protein C (SP-C) and coprecipitate with p97/VCP, remaining associated until substrate dislocation to the cytosol; HPD motif mutations abolishing BiP ATPase stimulation prevent ERdj5-mediated ERAD of misfolded SP-C. |
Co-immunoprecipitation, siRNA knockdown with ERAD readout, dominant-negative HPD mutant rescue experiment in XBP1−/− MEFs |
Molecular biology of the cell |
High |
18400946
|
| 2011 |
Crystal structure of full-length ERdj5 revealed an N-terminal J domain followed by six tandem thioredoxin domains organized into N- and C-terminal clusters; the C-terminal cluster forms the highly reducing platform that interacts with EDEM1 and reduces EDEM1-recruited ERAD substrates; pulse-chase experiments showed sequential substrate movement from calnexin → EDEM1-ERdj5 complex → retrotranslocation channel via BiP. |
X-ray crystallography, systematic biochemical analyses (reductase activity, binding assays), pulse-chase experiment |
Molecular cell |
High |
21329881
|
| 2007 |
Knockdown of ERdj5 by RNA interference in neuroectodermal tumour cells increased the apoptotic response to fenretinide, indicating ERdj5 normally protects against ER stress-induced apoptosis in these cells. |
siRNA knockdown with apoptosis readout (cell viability, apoptosis assays) following fenretinide treatment |
British journal of cancer |
Medium |
17353921
|
| 2009 |
ERdj5 overexpression sensitizes neuroblastoma cells to ER stress-induced apoptosis by abolishing eIF2α phosphorylation and inactivating PERK, thereby compromising the integrated stress response; ER-targeted Bcl-2 prevented this apoptosis, confirming ER-stress-regulated apoptosis pathway. |
Overexpression with ER stress inducers, phosphorylation assays (eIF2α), ER-targeted Bcl-2 rescue experiment |
The Journal of biological chemistry |
Medium |
19122239
|
| 2009 |
ERdj5 knockout mice show activated ER stress responses specifically in salivary glands; re-expression of ERdj5 (but not thioredoxin-like motif mutants) mitigated ER stress caused by overproduction of alpha-amylase, demonstrating that ERdj5's reductase activity is required for ER quality control in secretory cells in vivo. |
ERdj5 knockout mouse generation and analysis, ER stress markers (qPCR/western), rescue with wild-type vs thioredoxin-motif mutant ERdj5 |
The Biochemical journal |
High |
19788412
|
| 2013 |
ERdj5 forms mixed disulfides with multiple endogenous ER client proteins including the LDL receptor (LDLR); for LDLR, ERdj5 reduces non-native disulfides formed during productive folding (not only for ERAD), and this function requires ERdj5's interaction with BiP. |
Trapping of mixed disulfides (substrate trapping mutant), co-immunoprecipitation, LDLR folding assay, BiP interaction analysis |
Molecular cell |
High |
23769672
|
| 2013 |
ERdj5 interacts directly with the Sel1L N-terminal lumenal domain, linking it to the Hrd1 ERAD complex; ERdj5 promotes CTA1 retrotranslocation partly via its J domain by regulating BiP-CTA interaction proximal to the Hrd1 complex. |
Co-immunoprecipitation (ERdj5-Sel1L interaction), loss-of-function and gain-of-function approaches, retrotranslocation assay |
Molecular biology of the cell |
Medium |
23363602
|
| 2013 |
Redox partners of ERdj5 were identified from mouse epididymis tissue by combining acid quenching and thiol-alkylation to capture disulfide-linked complexes; two identified proteins were confirmed to interact with ERdj5 via intermolecular disulfide bonds in vivo. |
Acid quenching, thiol-alkylation, affinity purification followed by mass spectrometry, validation by western blot of disulfide-linked complexes |
Biochemical and biophysical research communications |
Medium |
24055038
|
| 2013 |
In C. elegans, dnj-27/ERdj5 ortholog is an ER luminal protein whose expression is induced by ER stress via IRE-1/XBP-1; its knockdown increases aggregation and pathological phenotypes of Aβ, α-synuclein, and polyQ proteins, and causes mitochondrial fragmentation. |
RNAi knockdown in C. elegans disease models, fluorescence microscopy of protein aggregation, motility/paralysis assays, mitochondrial morphology analysis |
Antioxidants & redox signaling |
Medium |
23641861
|
| 2014 |
ERdj5 (DNAJC10) regulates P23H rod opsin biogenesis; overexpression promoted degradation and prevented aggregation of P23H rod opsin, while shRNA knockdown delayed degradation and promoted aggregation; both reductase and co-chaperone activities of ERdj5 were required, and mutations in these domains acted as dominant negatives affecting wild-type rod opsin biogenesis. |
Overexpression and shRNA knockdown with fluorescence microscopy (FRAP, aggregation), domain mutant analysis including dominant negative effects, ER retention assays |
Human molecular genetics |
Medium |
25055872
|
| 2015 |
ERdj5 reduces disulfide bonds of SV40 virus in the ER lumen, a reaction required for ER membrane transport and infection; ERdj5 cooperates with PDI to induce structural rearrangements in SV40 enabling engagement of BAP31 for membrane penetration; ERdj5 also mediates BK PyV infection. |
Loss-of-function (siRNA), infection assays, negative-stain electron microscopy of ER-localized SV40, co-immunoprecipitation (SV40-BAP31) |
Journal of virology |
Medium |
26085143
|
| 2016 |
ERdj5 activates SERCA2b calcium pump function by reducing its luminal disulfide bond; at lower ER luminal Ca2+ concentrations ERdj5 is active, while higher Ca2+ induces ERdj5 oligomerization preventing SERCA2b interaction; BiP binding to the J domain of ERdj5 regulates this oligomerization, providing Ca2+-dependent feedback regulation of ER Ca2+ homeostasis. |
In vitro reductase activity assay, SERCA2b activity assay, co-immunoprecipitation, Ca2+ measurement, oligomerization analysis |
Proceedings of the National Academy of Sciences of the United States of America |
High |
27694578
|
| 2017 |
A new crystal structure of ERdj5 revealed a largely different cluster arrangement relative to the original structure; high-speed atomic force microscopy showed rapid cluster movement around the flexible linker loop; ERdj5 mutants with fixed-cluster orientation compromised ERAD enhancement activity, indicating that conformational dynamics are required for efficient reduction of aberrantly formed disulfide bonds and substrate transfer. |
X-ray crystallography, high-speed atomic force microscopy (single-molecule observation), ERAD activity assays with fixed-cluster mutants |
Structure (London, England : 1993) |
High |
28479060
|
| 2019 |
ERdj5 ablation in mice produces a Sjögren's syndrome-like phenotype including spontaneous inflammation in salivary glands with T and B lymphocyte infiltration, reduced saliva flow, production of anti-SSA/Ro and anti-SSB/La autoantibodies, and a distinct cytokine signature, demonstrating ERdj5 is required for salivary gland homeostasis and prevention of autoimmune inflammatory responses. |
ERdj5 knockout mouse model, histopathology, serological assays (ANA, cytokine profiling), saliva flow rate measurement |
Frontiers in immunology |
Medium |
30967862
|
| 2019 |
ERdj5 in innate immune cells (particularly dendritic cells) is required for full immune activation by cholera toxin; ERdj5-knockout DCs show decreased costimulatory molecule expression (MHC II, CD80, CD86) and reduced pro-inflammatory cytokine secretion (IL-1β, TNF-α, IL-6), and ERdj5 KO mice show impaired antigen-specific IgG/IgA responses after CT immunization, specifically through CTA1 retro-translocation. |
ERdj5 knockout mouse model, DC activation assays (flow cytometry, ELISA), intranasal immunization with CT, cytokine profiling |
Frontiers in immunology |
Medium |
31275300
|
| 2020 |
AAV-mediated overexpression of ERdj5 in P23H-3 rats reduced visual function loss and preserved photoreceptor cells, correlating with reduced rhodopsin retention in the outer nuclear layer, demonstrating in vivo therapeutic benefit of ERdj5 overexpression for P23H rhodopsin-mediated retinal degeneration. |
AAV subretinal injection, electroretinogram (ERG), optical coherence tomography, outer nuclear layer morphometry, rhodopsin immunolocalization |
Human molecular genetics |
Medium |
32196553
|
| 2021 |
ERdj5 deletion causes intracellular Ca2+ imbalance, which activates Drp1 (a cytosolic GTPase involved in mitochondrial fission), leading to aberrant mitochondrial fragmentation and a cellular senescence phenotype, demonstrating that ERdj5-mediated Ca2+ regulation is essential for mitochondrial homeostasis. |
ERdj5 knockout cell lines, Ca2+ measurement, Drp1 activation assays (phosphorylation), mitochondrial morphology (fluorescence microscopy), senescence markers |
Scientific reports |
Medium |
34728782
|
| 2022 |
ERdj5 (Dnajc10) loss in mice exacerbates alcohol-induced liver injury and promotes oxidative stress; mechanistically, ERdj5 deficiency reduces nuclear Nrf2 and downstream antioxidant gene expression, and decreases hepatic glutathione content, placing ERdj5 upstream of the Nrf2 antioxidant pathway. |
Dnajc10 knockout mouse (chronic-binge ethanol model), H2O2 measurement, Nrf2 nuclear fractionation/western blot, antioxidant gene expression (qRT-PCR), glutathione assay |
Free radical biology & medicine |
Medium |
35390453
|
| 2023 |
ERdj5 and BiP cooperate in a reconstituted in vitro system to reduce disulfide-linked J-chain oligomers in a stepwise manner (large oligomers → trimers → dimers → monomers); BiP synergistically enhances ERdj5-mediated reduction in an ATP-dependent manner; single-molecule AFM showed stochastic release of small oligomers through repeated ERdj5 actions on peripheral/flexible regions of aggregates; systematic mutagenesis dissected the molecular requirements. |
In vitro reconstitution with purified proteins, biochemical reduction assays, high-speed atomic force microscopy (single-molecule), systematic mutagenesis |
The Journal of biological chemistry |
High |
37739037
|
| 2023 |
ERdj5 (DNAJC10) functions specifically as a reductase (not isomerase) in ER disulfide bond processing; ERp57 is required for isomerisation of non-native disulfides in glycoproteins; ERdj5 is required to provide the reductive pathway that enables alternative PDIs to compensate for absence of ERp57, indicating ERdj5's essential cellular function is reduction of non-native disulfides. |
Knockout cell lines (ERdj5 and ERp57), disulfide bond formation/isomerization assays, metabolic labeling, substrate folding analysis |
Journal of cell science |
High |
36655611
|
| 2024 |
DNAJC10 deficiency in AML specifically induces ER stress and activates the PERK-EIF2α-ATF4 branch of the UPR, leading to apoptosis of leukemia stem cells; blocking PERK (with GSK2606414 or shRNA) rescued the DNAJC10 loss-of-function phenotype both in vitro and in vivo, placing DNAJC10 upstream of PERK in the UPR. |
shRNA knockdown and CRISPR knockout in human AML lines and LSC-enriched populations, MLL-AF9 murine leukemia model in Dnajc10 knockout mice, PERK inhibitor rescue (GSK2606414), apoptosis assays, UPR pathway analysis |
Haematologica |
Medium |
37496439
|
| 2025 |
DNAJC10 overexpression suppresses EGFR transcription in glioblastoma by inhibiting the IRE1α-XBP-1s axis of the UPR; XBP-1s binds the EGFR promoter and recruits SET7/9 methyltransferase, promoting H3K4me3 and H3K4me1 marks; XBP-1s overexpression reverses DNAJC10-mediated EGFR downregulation; pharmacological histone methylation inhibition attenuates XBP-1s-induced EGFR transcription. |
Overexpression and knockdown of DNAJC10, XBP-1s overexpression rescue, ChIP (XBP-1s binding to EGFR promoter, H3K4me3/me1), pharmacological inhibition of histone methylation, in vitro and xenograft invasion assays |
Molecular biomedicine |
Medium |
41191192
|