| 2005 |
Ge-1 (EDC4) is a central scaffold component of mammalian P-bodies that co-localizes with DCP1a, DCP2, and GW182. Its C-terminal domain is necessary and sufficient for P-body targeting. siRNA-mediated knockdown of Ge-1 abolishes P-bodies containing Ge-1, DCP1a, and DCP2, while Ge-1-containing P-bodies persist despite DCP2 knockdown, placing Ge-1 upstream of the 5'-decapping step. |
siRNA knockdown, confocal co-localization, cDNA cloning via autoimmune patient serum |
RNA (New York, N.Y.) |
High |
16314453
|
| 2005 |
Hedls (EDC4) enhances the catalytic activity of hDCP2 and promotes complex formation between hDCP2 and hDCP1. It exists in a complex with hDcp2, hDcp1, hEdc3, and Rck/p54. Overexpression of Hedls produces aberrant P-bodies and causes accumulation of a deadenylated ARE-mediated mRNA decay intermediate. |
Co-immunoprecipitation, in vitro decapping assay, overexpression phenotypic analysis, P-body localization |
Molecular cell |
High |
16364915
|
| 2008 |
The C-terminal domain of Ge-1 (EDC4) adopts an all alpha-helical fold related to ARM/HEAT-repeat proteins. Structure-based mutagenesis identified an invariant surface residue required for P-body localization, and the domain mediates Ge-1 oligomerization. |
X-ray crystallography (Drosophila Ge-1 C-terminal domain), structure-based mutagenesis, P-body localization assays |
RNA (New York, N.Y.) |
High |
18755833
|
| 2014 |
EDC4 serves as a scaffold for the human decapping complex, providing distinct binding sites for DCP1, DCP2, and XRN1. DCP2 and XRN1 bind simultaneously to the EDC4 C-terminal domain via short linear motifs (SLiMs). DCP1 and DCP2 form direct but weak interactions that are facilitated by EDC4. A conserved asparagine-arginine loop (NR-loop) in the DCP1 EVH1 domain is required for DCP2 activation, which occurs preferentially on the EDC4 scaffold, coupling decapping to 5'-to-3' degradation by XRN1. |
Binding assays, co-immunoprecipitation, mutational analysis, in vivo functional decapping assays |
Nucleic acids research |
High |
24510189
|
| 2012 |
EDC4 forms a complex with Coenzyme A synthase (CoAsy) in a growth factor- and stress-regulated manner. EDC4 strongly inhibits the dephospho-CoA kinase activity of CoAsy in vitro, and transient overexpression of EDC4 decreases cell proliferation, an effect partially rescued by co-expression of CoAsy. |
Co-immunoprecipitation, in vitro kinase activity assay, overexpression/rescue experiments |
FEBS letters |
Medium |
22982864
|
| 2014 |
CCHCR1 interacts with EDC4 as its major binding partner, as identified by co-immunoprecipitation with EGFP-tagged CCHCR1 and LC-MS/MS. The N-terminus of CCHCR1 is required for P-body localization, establishing CCHCR1 as a novel P-body component. |
Co-immunoprecipitation, LC-MS/MS, confocal imaging, stable cell line expression |
Experimental cell research |
Medium |
24858563
|
| 2014 |
Edc4 interacts with the mTORC1 complex (via raptor) in human T lymphoblast cells, co-localizes with raptor in P-bodies, and undergoes serine phosphorylation that is reduced by rapamycin treatment. Rapamycin also increases total Edc4 protein while decreasing its interaction with mTORC1 and reducing total 5'-capped mRNA levels. |
Co-immunoprecipitation, quantitative co-localization by confocal microscopy, rapamycin treatment, immunoblotting |
International journal of molecular sciences |
Low |
25514416
|
| 2016 |
A naturally occurring 26 amino acid deletion in the serine-rich linker region of Drosophila Ge-1 confers resistance to Drosophila melanogaster sigma virus. Knockdown of the susceptible allele reduces viral titre. Ge-1-based resistance is independent of the siRNA pathway. DCP1, which interacts with Ge-1 and commits mRNA to degradation by cap removal, also protects against sigma virus. |
Genetic mapping, transgenic fly construction, viral titre measurement, siRNA pathway epistasis |
PLoS pathogens |
Medium |
26799957
|
| 2018 |
EDC4 is a member of the BRCA1-BRIP1-TOPBP1 complex and plays a role in homologous recombination by stimulating DNA end resection at double-strand breaks. EDC4 deficiency causes genome instability, hypersensitivity to DNA interstrand cross-linking drugs and PARP inhibitors, phenocopying BRCA1 deficiency. |
Co-immunoprecipitation, HR assays, DNA end resection assays, siRNA knockdown, drug sensitivity assays, patient mutation analysis |
Nature communications |
High |
29511213
|
| 2020 |
EDC4 interacts with mammalian MARF1 endoribonuclease and impairs its activity by preventing MARF1's LOTUS domains from binding target mRNAs. MARF1 predominantly binds 3' UTRs of target mRNAs via its LOTUS domains to promote their decay, and a MARF1 RRM enhances its endonuclease activity. Thus EDC4 acts as a repressor of MARF1-mediated mRNA decay in addition to its role as an enhancer of DCP2-mediated decapping. |
RNA-seq/transcriptome-wide analysis, co-immunoprecipitation, RNA binding assays, mutagenesis |
eLife |
High |
32510323
|
| 2020 |
EDC4 interacts with replication protein A (RPA) and promotes RPA phosphorylation. EDC4 knockdown enhances cisplatin sensitivity and cisplatin-induced DNA damage in cervical cancer cells. RPA knockdown reverses the protective effect of EDC4 overexpression on cisplatin-induced DNA damage, placing RPA downstream of EDC4 in this cisplatin resistance pathway. |
Co-immunoprecipitation, siRNA knockdown, MTT/colony assays, γH2AX immunofluorescence, overexpression rescue |
Hereditas |
Medium |
33054858
|
| 2023 |
Disrupting the EDC4-XRN1 interaction or altering their stoichiometry inhibits mRNA decapping and stabilizes microRNA-targeted mRNAs in a translationally repressed state. This concomitantly leads to larger P-bodies that are responsible for preventing mRNA decapping. P-bodies support cell viability and prevent stress granule formation when XRN1 is limiting, demonstrating that the EDC4-XRN1 interaction regulates P-body dynamics to coordinate mRNA decapping with 5'-to-3' decay. |
Mutational disruption of EDC4-XRN1 interaction, mRNA stability assays, P-body size quantification, stress granule assays, cell viability assays |
The EMBO journal |
High |
37621215
|
| 2024 |
In C. elegans, EDC-4 counteracts EDC-3 function and engenders the assembly of DCAP-2 (DCP2) with the GID/CTLH complex, a ubiquitin ligase involved in the maternal-to-zygotic transition, linking P-body scaffold function to developmental mRNA clearance. |
Genetic epistasis in C. elegans, co-immunoprecipitation, proteomics, embryonic mRNA quantification |
Cell reports |
Medium |
39331503
|
| 2025 |
The EDC4 C-terminal domain (residues 1266-1401) is the minimal region required for P-body formation, driving phase separation and EDC4 condensation. The microprotein Nobody (NBDY) peptide (residues 22-41) directly binds the EDC4 C-terminal domain and inhibits its self-association, selectively dissolving P-bodies without affecting the canonical mRNA decay pathway. P-body disruption activates the p53 pathway and enhances stability of associated transcripts. |
Deletion mapping, phase separation assays, NBDY peptide binding assay, transcriptome profiling, p53 pathway reporter assays, cell proliferation/invasion assays |
RNA (New York, N.Y.) |
Medium |
40360209
|
| 2025 |
Ebola virus VP35 binds directly to the C-terminal subdomain of EDC4, and both proteins co-localize in EBOV-infected cells. siRNA depletion of EDC4, DCP2, and EDC3 each reduce EBOV replication by inhibiting early viral RNA synthesis, demonstrating that EBOV co-opts the EDC4 scaffold of the mRNA decapping complex for its replication. |
Proximity-dependent biotinylation, co-localization in infected cells, siRNA depletion with viral RNA synthesis measurement |
Nature communications |
Medium |
41006235
|
| 2016 |
NoBody (NBDY) microprotein interacts with mRNA decapping proteins including EDC4 and localizes to P-bodies. Modulation of NoBody levels is anticorrelated with cellular P-body numbers and alters steady-state levels of an NMD substrate, implicating NBDY as a novel component of the mRNA decapping complex that regulates P-body assembly. |
Co-immunoprecipitation, live-cell imaging, P-body quantification, NMD reporter assays |
Nature chemical biology |
Medium |
27918561
|