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- EMDB-49223: Viral protein DP71L in complex with phosphorylated eIF2alpha (NTD... -
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Open data
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Basic information
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Title | Viral protein DP71L in complex with phosphorylated eIF2alpha (NTD) and protein phosphatase 1A (D64A), stabilized by G-actin/DNAseI | |||||||||
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![]() | Phosphatase / complex / ISR / TRANSLATION | |||||||||
Function / homology | ![]() regulation of macromolecule metabolic process / regulation of neutrophil mediated cytotoxicity / regulation of primary metabolic process / zymogen granule / regulation of acute inflammatory response / protein serine/threonine phosphatase inhibitor activity / regulation of glycogen catabolic process / translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot ...regulation of macromolecule metabolic process / regulation of neutrophil mediated cytotoxicity / regulation of primary metabolic process / zymogen granule / regulation of acute inflammatory response / protein serine/threonine phosphatase inhibitor activity / regulation of glycogen catabolic process / translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / response to kainic acid / deoxyribonuclease I / Cellular response to mitochondrial stress / response to manganese-induced endoplasmic reticulum stress / positive regulation of type B pancreatic cell apoptotic process / PTW/PP1 phosphatase complex / Response of EIF2AK1 (HRI) to heme deficiency / Recycling of eIF2:GDP / negative regulation of translational initiation in response to stress / PERK-mediated unfolded protein response / protein phosphatase type 1 complex / PERK regulates gene expression / glycogen granule / eukaryotic translation initiation factor 2 complex / deoxyribonuclease I activity / symbiont-mediated suppression of host translation initiation / protein phosphatase 1 binding / neutrophil activation involved in immune response / cadherin binding involved in cell-cell adhesion / regulation of translational initiation in response to stress / eukaryotic 48S preinitiation complex / positive regulation of extrinsic apoptotic signaling pathway in absence of ligand / DNA catabolic process / regulation of canonical Wnt signaling pathway / Formation of the ternary complex, and subsequently, the 43S complex / cytoskeletal motor activator activity / dephosphorylation / histone H2AXS139 phosphatase activity / RNA polymerase II CTD heptapeptide repeat Y1 phosphatase activity / RNA polymerase II CTD heptapeptide repeat T4 phosphatase activity / RNA polymerase II CTD heptapeptide repeat S2 phosphatase activity / RNA polymerase II CTD heptapeptide repeat S5 phosphatase activity / RNA polymerase II CTD heptapeptide repeat S7 phosphatase activity / MAP kinase serine/threonine phosphatase activity / calmodulin-dependent protein phosphatase activity / myosin phosphatase activity / branching morphogenesis of an epithelial tube / glycogen metabolic process / Ribosomal scanning and start codon recognition / protein serine/threonine phosphatase activity / myosin heavy chain binding / protein-serine/threonine phosphatase / Translation initiation complex formation / tropomyosin binding / Triglyceride catabolism / entrainment of circadian clock by photoperiod / Maturation of hRSV A proteins / troponin I binding / filamentous actin / mesenchyme migration / phosphatase activity / actin filament bundle / telomere maintenance in response to DNA damage / actin filament bundle assembly / phosphoprotein phosphatase activity / skeletal muscle myofibril / striated muscle thin filament / skeletal muscle thin filament assembly / actin monomer binding / Response of EIF2AK4 (GCN2) to amino acid deficiency / DARPP-32 events / transition metal ion binding / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / positive regulation of glycogen biosynthetic process / ribonucleoprotein complex binding / stress fiber / mitophagy / skeletal muscle fiber development / protein dephosphorylation / titin binding / actin filament polymerization / translation initiation factor activity / stress granule assembly / cellular response to amino acid starvation / response to endoplasmic reticulum stress / Downregulation of TGF-beta receptor signaling / adherens junction / filopodium / actin filament / translational initiation / lung development / circadian regulation of gene expression / response to lead ion / regulation of circadian rhythm / PKR-mediated signaling / ABC-family proteins mediated transport / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / cytoplasmic stress granule Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.03 Å | |||||||||
![]() | Reineke LC / Dalwadi U / Croll T / Arthur C / Lee DJ / Frost A / Costa-Mattioli M | |||||||||
Funding support | 1 items
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![]() | ![]() Title: Harnessing the Evolution of Proteostasis Networks to Reverse Cognitive Dysfunction. Abstract: The integrated stress response (ISR) is a highly conserved network essential for maintaining cellular homeostasis and cognitive function. Here, we investigated how persistent ISR activation impacts ...The integrated stress response (ISR) is a highly conserved network essential for maintaining cellular homeostasis and cognitive function. Here, we investigated how persistent ISR activation impacts cognitive performance, primarily focusing on a PPP1R15B genetic variant associated with intellectual disability. By generating a novel mouse model that mimics this human condition, we revealed that this variant destabilizes the PPP1R15B•PP1 phosphatase complex, resulting in chronic ISR activation, impaired protein synthesis, and deficits in long-term memory. Importantly, we found that the cognitive and synaptic deficits in mice are directly due to ISR activation. Leveraging insights from evolutionary biology, we characterized DP71L, a viral orthologue of PPP1R15B, through detailed molecular and structural analyses, uncovering its mechanism of action as a potent pan-ISR inhibitor. Remarkably, we found that DP71L not only buffers cognitive decline associated with a wide array of conditions-including Down syndrome, Alzheimer's disease and aging-but also enhances long-term synaptic plasticity and memory in healthy mice. These findings highlight the promise of utilizing evolutionary insight to inform innovative therapeutic strategies. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 58.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 23.5 KB 23.5 KB | Display Display | ![]() |
Images | ![]() | 132.7 KB | ||
Filedesc metadata | ![]() | 8 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 417.1 KB | Display | ![]() |
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Full document | ![]() | 416.5 KB | Display | |
Data in XML | ![]() | 6 KB | Display | |
Data in CIF | ![]() | 7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9nb9MC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.9286 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
-Entire : PP1A holo-phosphatase complex with viral protein DP71L, G-actin, ...
Entire | Name: PP1A holo-phosphatase complex with viral protein DP71L, G-actin, DNAseI, and substrate phospho-eIF2alpha (2-187) |
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Components |
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-Supramolecule #1: PP1A holo-phosphatase complex with viral protein DP71L, G-actin, ...
Supramolecule | Name: PP1A holo-phosphatase complex with viral protein DP71L, G-actin, DNAseI, and substrate phospho-eIF2alpha (2-187) type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 140 KDa |
-Macromolecule #1: Protein DP71L
Macromolecule | Name: Protein DP71L / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 8.43573 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGGRRRKKRT NDVKHVRFAA AVEVWEADDI ERKGPWEQAA VDRFRFQRRI ASVEELLSAV LLRQKKLLEQ Q UniProtKB: Protein DP71L |
-Macromolecule #2: Serine/threonine-protein phosphatase PP1-alpha catalytic subunit
Macromolecule | Name: Serine/threonine-protein phosphatase PP1-alpha catalytic subunit type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: protein-serine/threonine phosphatase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 37.514039 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MSDSEKLNLD SIIGRLLEVQ GSRPGKNVQL TENEIRGLCL KSREIFLSQP ILLELEAPLK ICGAIHGQYY DLLRLFEYGG FPPESNYLF LGDYVDRGKQ SLETICLLLA YKIKYPENFF LLRGNHECAS INRIYGFYDE CKRRYNIKLW KTFTDCFNCL P IAAIVDEK ...String: MSDSEKLNLD SIIGRLLEVQ GSRPGKNVQL TENEIRGLCL KSREIFLSQP ILLELEAPLK ICGAIHGQYY DLLRLFEYGG FPPESNYLF LGDYVDRGKQ SLETICLLLA YKIKYPENFF LLRGNHECAS INRIYGFYDE CKRRYNIKLW KTFTDCFNCL P IAAIVDEK IFCCHGGLSP DLQSMEQIRR IMRPTDVPDQ GLLCDLLWSD PDKDVQGWGE NDRGVSFTFG AEVVAKFLHK HD LDLICRA HQVVEDGYEF FAKRQLVTLF SAPNYCGEFD NAGAMMSVDE TLMCSFQILK PADKNKGKYG QFSGLNPGGR PIT PPRNSA KAKK UniProtKB: Serine/threonine-protein phosphatase PP1-alpha catalytic subunit |
-Macromolecule #3: Actin, alpha skeletal muscle
Macromolecule | Name: Actin, alpha skeletal muscle / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 42.096953 KDa |
Sequence | String: MCDEDETTAL VCDNGSGLVK AGFAGDDAPR AVFPSIVGRP RHQGVMVGMG QKDSYVGDEA QSKRGILTLK YPIEHGIITN WDDMEKIWH HTFYNELRVA PEEHPTLLTE APLNPKANRE KMTQIMFETF NVPAMYVAIQ AVLSLYASGR TTGIVLDSGD G VTHNVPIY ...String: MCDEDETTAL VCDNGSGLVK AGFAGDDAPR AVFPSIVGRP RHQGVMVGMG QKDSYVGDEA QSKRGILTLK YPIEHGIITN WDDMEKIWH HTFYNELRVA PEEHPTLLTE APLNPKANRE KMTQIMFETF NVPAMYVAIQ AVLSLYASGR TTGIVLDSGD G VTHNVPIY EGYALPHAIM RLDLAGRDLT DYLMKILTER GYSFVTTAER EIVRDIKEKL CYVALDFENE MATAASSSSL EK SYELPDG QVITIGNERF RCPETLFQPS FIGMESAGIH ETTYNSIMKC DIDIRKDLYA NNVMSGGTTM YPGIADRMQK EIT ALAPST MKIKIIAPPE RKYSVWIGGS ILASLSTFQQ MWITKQEYDE AGPSIVHRKC F UniProtKB: Actin, alpha skeletal muscle |
-Macromolecule #4: Deoxyribonuclease-1
Macromolecule | Name: Deoxyribonuclease-1 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO / EC number: deoxyribonuclease I |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 31.374436 KDa |
Sequence | String: MRGTRLMGLL LALAGLLQLG LSLKIAAFNI RTFGETKMSN ATLASYIVRI VRRYDIVLIQ EVRDSHLVAV GKLLDYLNQD DPNTYHYVV SEPLGRNSYK ERYLFLFRPN KVSVLDTYQY DDGCESCGND SFSREPAVVK FSSHSTKVKE FAIVALHSAP S DAVAEINS ...String: MRGTRLMGLL LALAGLLQLG LSLKIAAFNI RTFGETKMSN ATLASYIVRI VRRYDIVLIQ EVRDSHLVAV GKLLDYLNQD DPNTYHYVV SEPLGRNSYK ERYLFLFRPN KVSVLDTYQY DDGCESCGND SFSREPAVVK FSSHSTKVKE FAIVALHSAP S DAVAEINS LYDVYLDVQQ KWHLNDVMLM GDFNADCSYV TSSQWSSIRL RTSSTFQWLI PDSADTTATS TNCAYDRIVV AG SLLQSSV VPGSAAPFDF QAAYGLSNEM ALAISDHYPV EVTLT UniProtKB: Deoxyribonuclease-1 |
-Macromolecule #5: Eukaryotic translation initiation factor 2 subunit 1
Macromolecule | Name: Eukaryotic translation initiation factor 2 subunit 1 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 21.817863 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: PGLSCRFYQH KFPEVEDVVM VNVRSIAEMG AYVSLLEYNN IEGMILLSEL (SEP)RRRIRSINK LIRIGRNECV VVIRVD KEK GYIDLSKRRV SPEEAIKCED KFTKSKTVYS ILRHVAEVLE YTKDEQLESL FQRTAWVFDD KYKRPGYGAY DAFKHAV SD PSILDSLDLN EDEREVLINN INRRLTPQ UniProtKB: Eukaryotic translation initiation factor 2 subunit 1 |
-Macromolecule #6: MANGANESE (II) ION
Macromolecule | Name: MANGANESE (II) ION / type: ligand / ID: 6 / Number of copies: 1 / Formula: MN |
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Molecular weight | Theoretical: 54.938 Da |
-Macromolecule #7: CALCIUM ION
Macromolecule | Name: CALCIUM ION / type: ligand / ID: 7 / Number of copies: 1 / Formula: CA |
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Molecular weight | Theoretical: 40.078 Da |
-Macromolecule #8: ADENOSINE-5'-TRIPHOSPHATE
Macromolecule | Name: ADENOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 8 / Number of copies: 1 / Formula: ATP |
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Molecular weight | Theoretical: 507.181 Da |
Chemical component information | ![]() ChemComp-ATP: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 5.5 mg/mL | |||||||||||||||||||||
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Buffer | pH: 7.5 Component:
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Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY / Support film - Film thickness: 25 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 45 sec. / Pretreatment - Atmosphere: AIR / Pretreatment - Pressure: 0.045 kPa | |||||||||||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 278 K / Instrument: FEI VITROBOT MARK IV / Details: 3.5 uL volume, -5 blot force, 1.5 blot time. |
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Electron microscopy
Microscope | TFS KRIOS |
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Specialist optics | Energy filter - Name: TFS Selectris X / Energy filter - Slit width: 10 eV |
Image recording | Film or detector model: TFS FALCON 4i (4k x 4k) / Number grids imaged: 1 / Number real images: 5236 / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 130000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Initial model | Chain - Source name: AlphaFold / Chain - Initial model type: in silico model |
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Output model | ![]() PDB-9nb9: |