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Basic information
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Title | Cryo-EM structure of CRL2-FEM1B bound with TOM20(tetramer) | |||||||||
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![]() | ubiquitination E3 ligase / Cryo-EM / PROTEIN BINDING | |||||||||
Function / homology | ![]() tRNA import into mitochondrion / TOM complex / regulation of ubiquitin-protein transferase activity / epithelial cell maturation involved in prostate gland development / mitochondrion targeting sequence binding / mitochondrial outer membrane translocase complex / mitochondria-associated endoplasmic reticulum membrane contact site / migrasome / protein import into mitochondrial matrix / protein-transporting ATPase activity ...tRNA import into mitochondrion / TOM complex / regulation of ubiquitin-protein transferase activity / epithelial cell maturation involved in prostate gland development / mitochondrion targeting sequence binding / mitochondrial outer membrane translocase complex / mitochondria-associated endoplasmic reticulum membrane contact site / migrasome / protein import into mitochondrial matrix / protein-transporting ATPase activity / branching involved in prostate gland morphogenesis / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex / cellular response to chemical stress / regulation of DNA damage checkpoint / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / Mitochondrial protein import / target-directed miRNA degradation / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / VCB complex / elongin complex / positive regulation of protein autoubiquitination / protein neddylation / regulation of extrinsic apoptotic signaling pathway via death domain receptors / death receptor binding / NEDD8 ligase activity / negative regulation of response to oxidative stress / Cul5-RING ubiquitin ligase complex / protein targeting to mitochondrion / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / ubiquitin-ubiquitin ligase activity / negative regulation of type I interferon production / Cul4A-RING E3 ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / negative regulation of mitophagy / Prolactin receptor signaling / protein insertion into mitochondrial outer membrane / cullin family protein binding / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / protein monoubiquitination / ubiquitin ligase complex / Tat-mediated elongation of the HIV-1 transcript / ubiquitin-like ligase-substrate adaptor activity / Formation of HIV-1 elongation complex containing HIV-1 Tat / Formation of HIV elongation complex in the absence of HIV Tat / protein K48-linked ubiquitination / RNA Polymerase II Transcription Elongation / Nuclear events stimulated by ALK signaling in cancer / Formation of RNA Pol II elongation complex / Regulation of BACH1 activity / sperm midpiece / RNA Polymerase II Pre-transcription Events / regulation of cellular response to insulin stimulus / PINK1-PRKN Mediated Mitophagy / positive regulation of TORC1 signaling / post-translational protein modification / intrinsic apoptotic signaling pathway / negative regulation of insulin receptor signaling pathway / T cell activation / Degradation of DVL / Recognition of DNA damage by PCNA-containing replication complex / cell periphery / Degradation of GLI1 by the proteasome / transcription corepressor binding / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / Vif-mediated degradation of APOBEC3G / Hedgehog 'on' state / DNA Damage Recognition in GG-NER / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / transcription initiation at RNA polymerase II promoter / cellular response to amino acid stimulus / TP53 Regulates Transcription of DNA Repair Genes / Inactivation of CSF3 (G-CSF) signaling / Degradation of beta-catenin by the destruction complex / transcription elongation by RNA polymerase II / Evasion by RSV of host interferon responses / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / NOTCH1 Intracellular Domain Regulates Transcription / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / negative regulation of canonical Wnt signaling pathway / G1/S transition of mitotic cell cycle / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / Formation of Incision Complex in GG-NER / Regulation of expression of SLITs and ROBOs / RING-type E3 ubiquitin transferase Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.08 Å | |||||||||
![]() | Zhao S / Xu C | |||||||||
Funding support | ![]()
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![]() | ![]() Title: TOM20-driven E3 ligase recruitment regulates mitochondrial dynamics through PLD6. Authors: Anat Raiff / Shidong Zhao / Aizat Bekturova / Colin Zenge / Shir Mazor / Xinyan Chen / Wenwen Ru / Yaara Makaros / Tslil Ast / Alban Ordureau / Chao Xu / Itay Koren / ![]() ![]() ![]() Abstract: Mitochondrial homeostasis is maintained through complex regulatory mechanisms, including the balance of mitochondrial dynamics involving fusion and fission processes. A central player in this ...Mitochondrial homeostasis is maintained through complex regulatory mechanisms, including the balance of mitochondrial dynamics involving fusion and fission processes. A central player in this regulation is the ubiquitin-proteasome system (UPS), which controls the degradation of pivotal mitochondrial proteins. In this study, we identified cullin-RING E3 ligase 2 (CRL2) and its substrate receptor, FEM1B, as critical regulators of mitochondrial dynamics. Through proteomic analysis, we demonstrate here that FEM1B controls the turnover of PLD6, a key regulator of mitochondrial dynamics. Using structural and biochemical approaches, we show that FEM1B physically interacts with PLD6 and that this interaction is facilitated by the direct association of FEM1B with the mitochondrial import receptor TOM20. Ablation of FEM1B or disruption of the FEM1B-TOM20 interaction impairs PLD6 degradation and induces mitochondrial defects, phenocopying PLD6 overexpression. These findings underscore the importance of FEM1B in maintaining mitochondrial morphology and provide further mechanistic insights into how the UPS regulates mitochondrial homeostasis. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 945.6 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 26.1 KB 26.1 KB | Display Display | ![]() |
Images | ![]() | 137.1 KB | ||
Filedesc metadata | ![]() | 7.8 KB | ||
Others | ![]() ![]() | 928.8 MB 928.8 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 21.7 KB | Display | |
Data in CIF | ![]() | 26 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9j79MC ![]() 9j77C ![]() 9j78C ![]() 9j7aC ![]() 9j7bC ![]() 9jceC ![]() 9lkxC ![]() 9lkyC M: atomic model generated by this map C: citing same article ( |
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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: 0.82 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_61198_half_map_1.map | ||||||||||||
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Density Histograms |
-Half map: #1
File | emd_61198_half_map_2.map | ||||||||||||
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Density Histograms |
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Sample components
+Entire : Cryo-EM structure of CRL2-FEM1B bound with TOM20(tetramer)
+Supramolecule #1: Cryo-EM structure of CRL2-FEM1B bound with TOM20(tetramer)
+Macromolecule #1: Cullin-2
+Macromolecule #2: Elongin-C
+Macromolecule #3: Elongin-B
+Macromolecule #4: E3 ubiquitin-protein ligase RBX1, N-terminally processed
+Macromolecule #5: Protein fem-1 homolog B
+Macromolecule #6: Mitochondrial import receptor subunit TOM20 homolog
+Macromolecule #7: Poly-UNK
+Macromolecule #8: Poly-UNK
+Macromolecule #9: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: Quantifoil R2/1 / Material: COPPER / Mesh: 200 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 20 sec. |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Energy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K3 (6k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 55.8 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.9 µm / Nominal defocus min: 1.8 µm |
Sample stage | Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |