| 2007 |
The N-terminal LSm domain of EDC3 mediates DCP1 binding and P-body localization; crystal structures of Drosophila and human EDC3 LSm domains revealed a divergent Sm fold lacking the N-terminal alpha-helix and disrupted beta4-strand, remaining monomeric in solution; a conserved surface patch is required for DCP1 interaction but not P-body localization; the FDF motif mediates interaction with the C-terminal RecA-like domain of Me31B/DDX6; and the YjeF_N domain enables interaction with DCP2. |
NMR/crystal structure determination, mutagenesis, co-immunoprecipitation, P-body localization by fluorescence microscopy |
Molecular and cellular biology |
High |
17923697
|
| 2008 |
In Drosophila cells, EDC3 and Trailer Hitch (Tral/LSm15) both interact with DCP1 and Me31B via their LSm and FDF domains, respectively, but only EDC3 (not Tral) associates with the decapping enzyme DCP2; both proteins localize to P-bodies via their LSm domains; the LSm domain of EDC3/Tral is monomeric and adopts a divergent Sm fold. |
Co-immunoprecipitation, NMR structure determination, mutational analysis, fluorescence microscopy |
Molecular and cellular biology |
High |
18765641
|
| 2008 |
The YjeF_N domain of human EDC3 adopts a divergent Rossmann fold topology and forms a dimer in solution; dimerization is required for efficient RNA binding, P-body formation, and regulation of RPS28B mRNA in yeast. |
Crystal structure (2.2 Å), sedimentation velocity/equilibrium analysis, structure-based mutagenesis, P-body fluorescence assay, mRNA decay assay |
Molecular and cellular biology |
High |
18678652
|
| 2009 |
Crystal structure of the DDX6 C-terminal RecA-like domain bound to the FDF motif of EDC3 shows the FDF peptide adopts an alpha-helical conformation occupying a groove on DDX6 opposite to the RNA/ATP interface; Tral contains a similar FDF motif and binds the same surface, making EDC3 and Tral interactions with DDX6/Me31B mutually exclusive; mutagenesis of Me31B's FDF-binding surface abolishes P-body accumulation and translational repression. |
Crystal structure determination, mutagenesis, competition assays, P-body fluorescence and translational repression assays |
Molecular cell |
High |
19285948
|
| 2010 |
Edc3 binds Dcp2 via a short peptide sequence C-terminal to the Dcp2 catalytic domain; this interaction is required for Edc3 to stimulate Dcp2 decapping activity in vitro, for efficient Dcp2 accumulation in P-bodies, and for efficient degradation of the RPS28B mRNA; by contrast, YRA1 pre-mRNA degradation by Edc3 is independent of this Dcp2-binding region. |
In vitro decapping assay, deletion analysis, P-body fluorescence microscopy, mRNA decay assays in yeast |
Molecular and cellular biology |
High |
20086104
|
| 2010 |
AKT phosphorylates EDC3 on Ser-161 downstream of insulin signaling; this phosphorylation increases 14-3-3 binding to EDC3, causes morphological changes in P-body structures, inhibits microRNA-mediated mRNA post-transcriptional regulation, and alters EDC3 protein-protein interactions. |
Quantitative phosphoproteomics, in vitro kinase assay (AKT), site-directed mutagenesis (S161), co-immunoprecipitation with 14-3-3, functional P-body and miRNA reporter assays |
Molecular & cellular proteomics : MCP |
High |
20051463
|
| 2011 |
The yeast Edc3 LSm domain binds a short helical leucine-rich motif (HLM) in the disordered C-terminal extension of Dcp2 in an unprecedented manner via a noncanonical surface; Dcp2 contains multiple such HLMs that interact with Edc3; Edc3 stimulates decapping in vitro, likely by preventing the Dcp1:Dcp2 complex from adopting an inactive conformation; in metazoans the HLM is found in Dcp1 rather than Dcp2; the Edc3-related protein Scd6 competes with Edc3 for HLM binding. |
Crystal structure of yeast Edc3 LSm-Dcp2 HLM complex, in vitro decapping assay, mutagenesis, P-body localization assay |
The EMBO journal |
High |
22085934
|
| 2011 |
Edc3 interacts with the N-terminal domain of Upf1 at a site overlapping but not identical to the Upf2-binding site, and this interaction is largely responsible for the indirect Dcp2-Upf1 two-hybrid interaction; Edc3 (along with Pat1, Edc1, Edc2) is not essential for general NMD under normal conditions. |
Yeast two-hybrid assay, deletion analysis, NMD reporter assays |
PloS one |
Medium |
22065998
|
| 2013 |
Crystal structure (2.8 Å) of yeast Dhh1 bound to the N-terminal domain of Pat1 shows Pat1 wraps around the C-terminal RecA domain of Dhh1 at the FDF-binding site; Pat1 and Edc3 therefore compete for the same surface on Dhh1; both Pat1 and Edc3 also compete with RNA binding to Dhh1; mode of Dhh1-Pat1 recognition is conserved in humans. |
Crystal structure, co-immunoprecipitation with structure-based mutants, crosslinking-mass spectrometry RNA mapping, human validation by co-IP |
Nucleic acids research |
High |
23851565
|
| 2013 |
Edc3 directly and tightly binds the globular core of the Rps28 ribosomal protein through a motif exclusive to Saccharomycetaceae Edc3 proteins; this Rps28-binding motif is required for Edc3-mediated autoregulatory decay of RPS28B mRNA but is dispensable for Edc3's general decapping function and YRA1 pre-mRNA decay regulation. |
Biochemical binding assays, mutational analysis, mRNA decay assays, phylogenetic analysis |
Nucleic acids research |
High |
23956223
|
| 2014 |
Edc3 directly binds the 3'-UTR decay-inducing regulatory element of RPS28B mRNA (not Rps28b as previously thought); the Lsm and YjeF-N domains of Edc3 are both required for RPS28B mRNA decay, while only the Lsm domain is required for YRA1 pre-mRNA decay; Rps28b binds Edc3 and regulates its activity rather than binding mRNA directly. |
RNA-binding assays, domain deletion analysis, mRNA decay assays, co-immunoprecipitation in yeast |
Molecular and cellular biology |
High |
24492965
|
| 2014 |
Human Edc3 directly binds NADH via its YjeF_N domain; both human and yeast Edc3 chemically modify NAD in vitro; mutations predicted to disrupt NAD-related molecule binding/hydrolysis affect mRNA degradation control and P-body composition in vivo. |
Crystal structure analysis, in vitro NADH binding assay, in vitro NAD modification assay, mutagenesis, P-body assay, mRNA decay assay |
G3 (Bethesda, Md.) |
Medium |
24504254
|
| 2015 |
A homozygous missense mutation in human EDC3 (p.Phe54Ser) abolishes its ability to enhance DCP2 decapping at low concentrations and even inhibits DCP2 decapping at high concentrations in vitro, causing intellectual disability in affected individuals. |
In vitro decapping assay with mutant EDC3, human genetics (homozygosity mapping) |
Human molecular genetics |
Medium |
25701870
|
| 2016 |
Crystal structure of the active form of yeast K. lactis Dcp1-Dcp2 enzyme bound to product m7GDP and activator Edc3 shows how Edc3 binding to the Dcp2 HLM stabilizes the active conformation of the decapping complex. |
Crystal structure determination of Dcp1-Dcp2-Edc3-m7GDP complex |
Nature structural & molecular biology |
High |
27694841
|
| 2018 |
Crystal structure (2.84 Å) of K. lactis Edc1-Dcp1-Dcp2-Edc3 heterotetrameric complex with substrate analog in the Dcp2 active site shows how Edc3 and Edc1 coactivators act simultaneously: Edc1 forms a three-way interface bridging Dcp2 domains to consolidate the active conformation, while Edc3 binds Dcp2 HLM; kinetic data show Dcp2 has selectivity for the first transcribed nucleotide during catalysis. |
Crystal structure determination (2.84 Å), kinetic assays |
Nature communications |
High |
29559651
|
| 2021 |
Pim1 and Pim3 protein kinases bind to EDC3 and phosphorylate EDC3 on Ser-161, blocking EDC3 localization to P-bodies; EDC3 S161A mutation markedly decreases prostate cancer cell growth, migration, and invasion in vitro and in xenograft models, associated with reduced integrin β1 and α6 mRNA and protein expression. |
Kinase binding and phosphorylation assays, EDC3 S161A mutagenesis, P-body fluorescence microscopy, xenograft models, Western blotting, RT-PCR |
EMBO reports |
High |
33586867
|
| 2021 |
The C. elegans EDC-3 FDF-FEK motif interacts with the CGH-1 (DDX6 ortholog) RecA2 domain; the binding interface was characterized by homology modeling, ITC, and mutagenesis; EDC-3 and CAR-1/PATR-1 (Tral/Pat1 orthologs) have similar but distinct binding modes on CGH-1 RecA2. |
Homology modeling, ITC binding assay, mutagenesis, GST pulldown, co-localization fluorescence microscopy |
Scientific reports |
Medium |
34645931
|
| 2022 |
Chemical proteomics identified EDC3 Tyr-475 (Y475) as a stress-responsive site; Y475 mutation causes hypo-phosphorylation at S161 and S131, alters protein-protein interactions with DDX6, DCP1A/B, and 14-3-3 proteins, yet this mutant form can rescue the P-body-deficient phenotype of EDC3 knockout cells. |
Chemical proteomics (SuTEx probes), mutagenesis, phosphoproteomics, co-immunoprecipitation, P-body fluorescence rescue assay |
Cell chemical biology |
Medium |
36476517
|
| 2024 |
In C. elegans, EDC-3 facilitates timely removal of specific embryonic mRNAs (cgh-1, car-1, ifet-1) by reducing their expression levels and preventing excessive accumulation of DCAP-2 condensates in somatic cells; EDC-3 also defines boundaries between P bodies, germ granules, and stress granules; EDC-4 counteracts EDC-3 function. |
C. elegans genetic knockouts, fluorescence microscopy of condensate formation, mRNA level measurements |
Cell reports |
Medium |
39331503
|
| 2024 |
In S. cerevisiae, Med13 (a Cdk8 kinase module scaffold) translocates to the cytoplasm upon nitrogen starvation and colocalizes with P-bodies, where it recruits Edc3 into P-bodies and orchestrates autophagic degradation of Edc3 through a selective cargo-hitchhiking autophagy pathway using Ksp1 as autophagic receptor; Xrn1 autophagic degradation is Med13-independent. |
Live fluorescence microscopy (colocalization), genetic deletion analysis, autophagy assays in yeast |
Molecular biology of the cell |
Medium |
39320938
|
| 2025 |
Edc3 and Scd6 act redundantly as decapping activators that recruit Dhh1 to Dcp2; single mutants show limited mRNA decay defects while the double mutant reveals broad redundant targeting of mRNAs for degradation; Edc3/Scd6 also redundantly repress translation of specific transcripts and cooperate with Pat1 to adjust gene expression to nutrient availability. |
RNA-seq of single and double mutants, ribosome profiling, mRNA decay assays, metabolic measurements in yeast |
eLife |
Medium |
39257769 41289350
|