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Yorodumi- EMDB-55609: Composite structure of the repeat unit of cytoplasmic lattice filament -
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Open data
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Basic information
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| Title | Composite structure of the repeat unit of cytoplasmic lattice filament | ||||||||||||
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Keywords | Ubiquitination / Complex / Filament / UNKNOWN FUNCTION | ||||||||||||
| Function / homology | Function and homology informationregulation of translation by machinery localization / cytoplasm organization / ooplasm / Signaling by BMP / Prolactin receptor signaling / embryonic process involved in female pregnancy / subcortical maternal complex / establishment of organelle localization / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cargo trafficking to the periciliary membrane ...regulation of translation by machinery localization / cytoplasm organization / ooplasm / Signaling by BMP / Prolactin receptor signaling / embryonic process involved in female pregnancy / subcortical maternal complex / establishment of organelle localization / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cargo trafficking to the periciliary membrane / Sealing of the nuclear envelope (NE) by ESCRT-III / APC/C:Cdc20 mediated degradation of Cyclin B / APC-Cdc20 mediated degradation of Nek2A / Chromatin modifying enzymes / ER Quality Control Compartment (ERQC) / protein storage / structural constituent of cytoplasmic lattice / cytoplasmic lattice / Regulation of PTEN localization / cortical granule exocytosis / Downregulation of ERBB2:ERBB3 signaling / establishment or maintenance of apical/basal cell polarity / IRAK2 mediated activation of TAK1 complex / SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / endoplasmic reticulum localization / Gap-filling DNA repair synthesis and ligation in GG-NER / Fanconi Anemia Pathway / Endosomal Sorting Complex Required For Transport (ESCRT) / Negative regulation of FLT3 / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Regulation of expression of SLITs and ROBOs / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Downregulation of ERBB4 signaling / Stabilization of p53 / NOTCH3 Activation and Transmission of Signal to the Nucleus / Negative regulators of DDX58/IFIH1 signaling / Alpha-protein kinase 1 signaling pathway / Regulation of pyruvate metabolism / Downregulation of TGF-beta receptor signaling / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / PD-L1(CD274) glycosylation and translocation to plasma membrane / Translesion synthesis by REV1 / Negative regulation of FGFR3 signaling / Negative regulation of FGFR4 signaling / Translesion synthesis by POLK / Pexophagy / Regulation of NF-kappa B signaling / Negative regulation of FGFR1 signaling / Negative regulation of FGFR2 signaling / Regulation of TP53 Activity through Methylation / Carboxyterminal post-translational modifications of tubulin / Intraflagellar transport / Translesion synthesis by POLI / Recognition of DNA damage by PCNA-containing replication complex / NRIF signals cell death from the nucleus / Interferon alpha/beta signaling / p75NTR recruits signalling complexes / Negative regulation of MAPK pathway / Spry regulation of FGF signaling / Regulation of TP53 Degradation / Translesion Synthesis by POLH / Activated NOTCH1 Transmits Signal to the Nucleus / Formation of TC-NER Pre-Incision Complex / Negative regulation of MET activity / TRAF6-mediated induction of TAK1 complex within TLR4 complex / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / Termination of translesion DNA synthesis / COPI-independent Golgi-to-ER retrograde traffic / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Senescence-Associated Secretory Phenotype (SASP) / Josephin domain DUBs / DNA Damage Recognition in GG-NER / Dual Incision in GG-NER / Ubiquitin-dependent degradation of Cyclin D / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / SCF-beta-TrCP mediated degradation of Emi1 / AUF1 (hnRNP D0) binds and destabilizes mRNA / Downregulation of ERBB2 signaling / Dual incision in TC-NER / E3 ubiquitin ligases ubiquitinate target proteins / Oncogene Induced Senescence / Degradation of CRY and PER proteins / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Assembly of the pre-replicative complex / CDK-mediated phosphorylation and removal of Cdc6 / Downregulation of SMAD2/3:SMAD4 transcriptional activity / TNFR1-induced NF-kappa-B signaling pathway / HDR through Homologous Recombination (HRR) / Gap-filling DNA repair synthesis and ligation in TC-NER / Metalloprotease DUBs / Formation of Incision Complex in GG-NER / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / mRNA Polyadenylation / EGFR downregulation / ZNF598 and the Ribosome-associated Quality Trigger (RQT) complex dissociate a ribosome stalled on a no-go mRNA Similarity search - Function | ||||||||||||
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| Method | subtomogram averaging / cryo EM / Resolution: 8.0 Å | ||||||||||||
Authors | Singh K / Harasimov K / Carter AP | ||||||||||||
| Funding support | United Kingdom, European Union, 3 items
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Citation | Journal: EMBO J / Year: 2026Title: In-situ cryo-ET of mouse embryos reveals cytoplasmic lattices contain ubiquitin-charged E2-E3 ligase assemblies. Authors: Kashish Singh / Katarina Harasimov / Kathy K Niakan / Andrew P Carter / ![]() Abstract: Cytoplasmic lattices (CPLs) are filamentous assemblies essential for mammalian embryonic development. They are known to regulate organelle organization, spindle assembly, and protein homeostasis, but ...Cytoplasmic lattices (CPLs) are filamentous assemblies essential for mammalian embryonic development. They are known to regulate organelle organization, spindle assembly, and protein homeostasis, but their molecular functions remain unclear. Here, we develop a strategy combining cryo-focused ion beam milling and cryo-electron tomography to resolve macromolecular complexes directly in mammalian embryos. Using this approach, we determine the in situ structure of cytoplasmic lattices within 6/8-cell mouse embryos at ~4.7 Å resolution. CPL filaments are built from multiple copies of at least fourteen proteins arranged into a ~4.5 MDa repeating unit. The repeat contains a central cavity that is open at the back and lined with multiple FBXW-SKP1 complexes and three modules, each containing the E2 ubiquitin-conjugating enzyme UBE2D and the E3 ligase UHRF1. We resolve two CPL states: one is consistent with a ubiquitin-charged UBE2D, where ubiquitin is held in an open, inactive conformation by binding the scaffold protein PADI6; the second lacks discernible ubiquitin density and shows structural changes compatible with ubiquitin becoming available for transfer. Our findings support a model in which CPLs function as large ubiquitin ligase assemblies during early embryonic development. | ||||||||||||
| History |
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_55609.map.gz | 8.7 MB | EMDB map data format | |
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| Header (meta data) | emd-55609-v30.xml emd-55609.xml | 37.3 KB 37.3 KB | Display Display | EMDB header |
| Images | emd_55609.png | 66.9 KB | ||
| Filedesc metadata | emd-55609.cif.gz | 11 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-55609 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-55609 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9t68MC ![]() 9t63C ![]() 9t64C ![]() 9t65C ![]() 9t66C ![]() 9t67C C: citing same article ( M: atomic model generated by this map |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_55609.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.91 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 : Composite structure of the CPL repeat unit
+Supramolecule #1: Composite structure of the CPL repeat unit
+Macromolecule #1: KH domain-containing protein 3
+Macromolecule #2: Inactive protein-arginine deiminase type-6
+Macromolecule #3: NACHT, LRR and PYD domains-containing protein 5
+Macromolecule #4: Transducin-like enhancer protein 6
+Macromolecule #5: Oocyte-expressed protein homolog
+Macromolecule #6: F-box/WD repeat-containing protein
+Macromolecule #7: S-phase kinase-associated protein 1
+Macromolecule #8: Zinc finger BED domain-containing protein 3
+Macromolecule #9: NACHT, LRR and PYD domains-containing protein 14
+Macromolecule #10: E3 ubiquitin-protein ligase UHRF1
+Macromolecule #11: Ubiquitin-conjugating enzyme E2 D3
+Macromolecule #12: Tubulin alpha-1C chain
+Macromolecule #13: Tubulin beta-4B chain
+Macromolecule #14: NLR family, pyrin domain containing 4F
+Macromolecule #15: Polyubiquitin-C
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | subtomogram averaging |
| Aggregation state | filament |
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Sample preparation
| Buffer | pH: 7.5 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: TFS FALCON 4i (4k x 4k) / Average electron dose: 3.5 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 4.5 µm / Nominal defocus min: 2.0 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
| Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 8.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 5.1) / Number subtomograms used: 134387 |
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| Extraction | Number tomograms: 1153 / Number images used: 134387 / Software - Name: RELION (ver. 5.1) |
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| Final angle assignment | Type: MAXIMUM LIKELIHOOD |
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About Yorodumi



Keywords
Authors
United Kingdom, European Union, 3 items
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FIELD EMISSION GUN
