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- PDB-9lky: Dimer of CRL2-FEM1B bound with PLD6 -

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Basic information

Entry
Database: PDB / ID: 9lky
TitleDimer of CRL2-FEM1B bound with PLD6
Components
  • Cullin-2
  • E3 ubiquitin-protein ligase RBX1, N-terminally processed
  • Elongin-B
  • Elongin-C
  • Mitochondrial cardiolipin hydrolase
  • Protein fem-1 homolog B
KeywordsPROTEIN BINDING / ubiquitination E3 ligase / Cryo-EM
Function / homology
Function and homology information


cardiolipin hydrolase activity / Synthesis of PG / P granule organization / regulation of ubiquitin-protein transferase activity / RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism / epithelial cell maturation involved in prostate gland development / Synthesis of PA / piRNA processing / positive regulation of mitochondrial fusion / branching involved in prostate gland morphogenesis ...cardiolipin hydrolase activity / Synthesis of PG / P granule organization / regulation of ubiquitin-protein transferase activity / RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism / epithelial cell maturation involved in prostate gland development / Synthesis of PA / piRNA processing / positive regulation of mitochondrial fusion / branching involved in prostate gland morphogenesis / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / Hydrolases; Acting on ester bonds; Phosphoric-diester hydrolases / cullin-RING ubiquitin ligase complex / cellular response to chemical stress / Cul7-RING ubiquitin ligase complex / regulation of DNA damage checkpoint / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / target-directed miRNA degradation / elongin complex / positive regulation of protein autoubiquitination / RNA polymerase II transcription initiation surveillance / protein neddylation / regulation of extrinsic apoptotic signaling pathway via death domain receptors / death receptor binding / NEDD8 ligase activity / VCB complex / mitochondrial fusion / negative regulation of response to oxidative stress / Cul5-RING ubiquitin ligase complex / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / negative regulation of type I interferon production / ubiquitin-ubiquitin ligase activity / Cul4A-RING E3 ubiquitin ligase complex / Cul4-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 / PIWI-interacting RNA (piRNA) biogenesis / 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 / spermatid development / protein monoubiquitination / ubiquitin ligase complex / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / ubiquitin-like ligase-substrate adaptor activity / Formation of HIV elongation complex in the absence of HIV Tat / protein K48-linked ubiquitination / lipid catabolic process / Nuclear events stimulated by ALK signaling in cancer / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / Regulation of BACH1 activity / transcription-coupled nucleotide-excision repair / RNA Polymerase II Pre-transcription Events / regulation of cellular response to insulin stimulus / positive regulation of TORC1 signaling / intrinsic apoptotic signaling pathway / post-translational protein modification / negative regulation of insulin receptor signaling pathway / T cell activation / Degradation of DVL / Recognition of DNA damage by PCNA-containing replication complex / transcription corepressor binding / Degradation of GLI1 by the proteasome / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / Vif-mediated degradation of APOBEC3G / meiotic cell cycle / 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 / TP53 Regulates Transcription of DNA Repair Genes / transcription initiation at RNA polymerase II promoter / Inactivation of CSF3 (G-CSF) signaling / cellular response to amino acid stimulus / transcription elongation by RNA polymerase II / Degradation of beta-catenin by the destruction complex / 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 / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / G1/S transition of mitotic cell cycle / negative regulation of canonical Wnt signaling pathway / Formation of Incision Complex in GG-NER
Similarity search - Function
: / Phospholipase D-like domain / PLD-like domain / Phospholipase D. Active site motifs. / Phospholipase D/Transphosphatidylase / Phospholipase D phosphodiesterase active site profile. / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / Cullin protein neddylation domain / : ...: / Phospholipase D-like domain / PLD-like domain / Phospholipase D. Active site motifs. / Phospholipase D/Transphosphatidylase / Phospholipase D phosphodiesterase active site profile. / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / Cullin protein neddylation domain / : / Cullin, conserved site / Cullin family signature. / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin / Cullin protein neddylation domain / Elongin-C / Elongin B / Cullin / Cullin, N-terminal / Cullin homology domain / Cullin homology domain superfamily / Cullin family / Cullin family profile. / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / Ankyrin repeat / SKP1/BTB/POZ domain superfamily / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily / Zinc finger RING-type profile. / Zinc finger, RING-type / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Zinc finger, RING/FYVE/PHD-type / Ubiquitin-like domain superfamily / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily
Similarity search - Domain/homology
E3 ubiquitin-protein ligase RBX1 / Cullin-2 / Elongin-C / Elongin-B / Mitochondrial cardiolipin hydrolase / Protein fem-1 homolog B
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.93 Å
AuthorsZhao, S. / Xu, C.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Nat Chem Biol / Year: 2025
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
DepositionJan 17, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Apr 9, 2025Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.pdbx_database_id_DOI / _citation.title / _em_admin.last_update
Revision 1.2May 7, 2025Group: Data collection / Database references / Category: citation / em_admin
Item: _citation.pdbx_database_id_PubMed / _citation.title / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
K: Mitochondrial cardiolipin hydrolase
A: Cullin-2
C: Elongin-C
E: E3 ubiquitin-protein ligase RBX1, N-terminally processed
F: Protein fem-1 homolog B
G: Elongin-C
I: E3 ubiquitin-protein ligase RBX1, N-terminally processed
J: Protein fem-1 homolog B
H: Elongin-B
B: Cullin-2
D: Elongin-B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)412,08017
Polymers411,68811
Non-polymers3926
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 6 types, 11 molecules KABCGEIFJHD

#1: Protein Mitochondrial cardiolipin hydrolase / Choline phosphatase 6 / Mitochondrial phospholipase / MitoPLD / Phosphatidylcholine-hydrolyzing ...Choline phosphatase 6 / Mitochondrial phospholipase / MitoPLD / Phosphatidylcholine-hydrolyzing phospholipase D6 / Phospholipase D6 / PLD6 / Protein zucchini homolog


Mass: 22884.283 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PLD6 / Production host: Escherichia coli (E. coli)
References: UniProt: Q8N2A8, Hydrolases; Acting on ester bonds; Phosphoric-diester hydrolases
#2: Protein Cullin-2 / CUL-2


Mass: 88858.664 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CUL2 / Production host: Escherichia coli (E. coli) / References: UniProt: Q13617
#3: Protein Elongin-C / EloC / Elongin 15 kDa subunit / RNA polymerase II transcription factor SIII subunit C / SIII p15 / ...EloC / Elongin 15 kDa subunit / RNA polymerase II transcription factor SIII subunit C / SIII p15 / Transcription elongation factor B polypeptide 1


Mass: 10843.420 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELOC, TCEB1 / Production host: Escherichia coli (E. coli) / References: UniProt: Q15369
#4: Protein E3 ubiquitin-protein ligase RBX1, N-terminally processed / E3 ubiquitin-protein transferase RBX1 / N-terminally processed


Mass: 11196.830 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RBX1, RNF75, ROC1 / Production host: Escherichia coli (E. coli) / References: UniProt: P62877
#5: Protein Protein fem-1 homolog B / FEM1b / FEM1-beta / Fem-1-like death receptor-binding protein alpha / Fem-1-like in apoptotic ...FEM1b / FEM1-beta / Fem-1-like death receptor-binding protein alpha / Fem-1-like in apoptotic pathway protein alpha / F1A-alpha


Mass: 70355.062 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: FEM1B, F1AA, KIAA0396 / Production host: Escherichia coli (E. coli) / References: UniProt: Q9UK73
#6: Protein Elongin-B / EloB / Elongin 18 kDa subunit / RNA polymerase II transcription factor SIII subunit B / SIII p18 / ...EloB / Elongin 18 kDa subunit / RNA polymerase II transcription factor SIII subunit B / SIII p18 / Transcription elongation factor B polypeptide 2


Mass: 13147.781 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELOB, TCEB2 / Production host: Escherichia coli (E. coli) / References: UniProt: Q15370

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Non-polymers , 1 types, 6 molecules

#7: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Local refinement of FEM1B bound with PLD6 / Type: COMPLEX / Entity ID: #1-#6 / Source: MULTIPLE SOURCES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K

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Electron microscopy imaging

MicroscopyModel: FEI MORGAGNI
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2900 nm / Nominal defocus min: 1800 nm
Image recordingElectron dose: 56 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.20.1_4487: / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.93 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 97465 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00426816
ELECTRON MICROSCOPYf_angle_d0.58436248
ELECTRON MICROSCOPYf_dihedral_angle_d4.1393559
ELECTRON MICROSCOPYf_chiral_restr0.0424073
ELECTRON MICROSCOPYf_plane_restr0.0044658

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