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- EMDB-63188: Dimer of CRL2-FEM1B bound with PLD6 -

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Basic information

Entry
Database: EMDB / ID: EMD-63188
TitleDimer of CRL2-FEM1B bound with PLD6
Map data
Sample
  • Complex: Local refinement of FEM1B bound with PLD6
    • Protein or peptide: Mitochondrial cardiolipin hydrolase
    • Protein or peptide: Cullin-2
    • Protein or peptide: Elongin-C
    • Protein or peptide: E3 ubiquitin-protein ligase RBX1, N-terminally processed
    • Protein or peptide: Protein fem-1 homolog B
    • Protein or peptide: Elongin-B
  • Ligand: ZINC ION
Keywordsubiquitination E3 ligase / Cryo-EM / PROTEIN BINDING
Function / homology
Function and homology information


cardiolipin hydrolase activity / Synthesis of PG / P granule organization / RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism / regulation of ubiquitin-protein transferase activity / Synthesis of PA / epithelial cell maturation involved in prostate gland development / piRNA processing / positive regulation of mitochondrial fusion / branching involved in prostate gland morphogenesis ...cardiolipin hydrolase activity / Synthesis of PG / P granule organization / RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism / regulation of ubiquitin-protein transferase activity / Synthesis of PA / epithelial cell maturation involved in prostate gland development / piRNA processing / positive regulation of mitochondrial fusion / branching involved in prostate gland morphogenesis / Hydrolases; Acting on ester bonds; Phosphoric-diester hydrolases / cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / cellular response to chemical stress / regulation of DNA damage checkpoint / 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 / regulation of extrinsic apoptotic signaling pathway via death domain receptors / protein neddylation / death receptor binding / NEDD8 ligase activity / mitochondrial fusion / negative regulation of response to oxidative stress / VCB complex / Cul5-RING ubiquitin ligase complex / SCF ubiquitin ligase complex / negative regulation of type I interferon production / ubiquitin-ubiquitin ligase activity / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul2-RING ubiquitin ligase complex / Cul3-RING ubiquitin ligase complex / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / negative regulation of mitophagy / Prolactin receptor signaling / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / 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 / protein K48-linked ubiquitination / Formation of HIV elongation complex in the absence of HIV Tat / lipid catabolic process / Nuclear events stimulated by ALK signaling in cancer / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / transcription-coupled nucleotide-excision repair / RNA Polymerase II Pre-transcription Events / positive regulation of TORC1 signaling / regulation of cellular response to insulin stimulus / negative regulation of insulin receptor signaling pathway / intrinsic apoptotic signaling pathway / post-translational protein modification / T cell activation / Regulation of BACH1 activity / transcription corepressor binding / meiotic cell cycle / TP53 Regulates Transcription of DNA Repair Genes / cellular response to amino acid stimulus / transcription initiation at RNA polymerase II promoter / Degradation of DVL / transcription elongation by RNA polymerase II / Degradation of GLI1 by the proteasome / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / G1/S transition of mitotic cell cycle / Recognition of DNA damage by PCNA-containing replication complex / negative regulation of canonical Wnt signaling pathway / Hedgehog 'on' state / Vif-mediated degradation of APOBEC3G / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / RING-type E3 ubiquitin transferase / Inactivation of CSF3 (G-CSF) signaling / Degradation of beta-catenin by the destruction complex / DNA Damage Recognition in GG-NER / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / Evasion by RSV of host interferon responses / NOTCH1 Intracellular Domain Regulates Transcription / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / Formation of TC-NER Pre-Incision Complex
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 alpha solenoid domain / 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 / Zinc finger RING-type profile. / Ankyrin repeat-containing domain superfamily / 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)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.93 Å
AuthorsZhao S / Xu C
Funding support China, 1 items
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, 2025-
Header (metadata) releaseApr 9, 2025-
Map releaseApr 9, 2025-
UpdateMay 7, 2025-
Current statusMay 7, 2025Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_63188.png

Downloads & links

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Map

FileDownload / File: emd_63188.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
0.82 Å/pix.
x 512 pix.
= 419.84 Å		0.82 Å/pix.
x 512 pix.
= 419.84 Å		0.82 Å/pix.
x 512 pix.
= 419.84 Å

Surface

Projections

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.82 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.07
Minimum - Maximum-0.3197482 - 0.5918949
Average (Standard dev.)0.00045545964 (±0.01196806)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions512512512
Spacing512512512
CellA=B=C: 419.84 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_63188_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_63188_half_map_2.map
Projections & Slices
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Histogram (log scale)

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Sample components

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Entire : Local refinement of FEM1B bound with PLD6

EntireName: Local refinement of FEM1B bound with PLD6
Components
  • Complex: Local refinement of FEM1B bound with PLD6
    • Protein or peptide: Mitochondrial cardiolipin hydrolase
    • Protein or peptide: Cullin-2
    • Protein or peptide: Elongin-C
    • Protein or peptide: E3 ubiquitin-protein ligase RBX1, N-terminally processed
    • Protein or peptide: Protein fem-1 homolog B
    • Protein or peptide: Elongin-B
  • Ligand: ZINC ION

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Supramolecule #1: Local refinement of FEM1B bound with PLD6

SupramoleculeName: Local refinement of FEM1B bound with PLD6 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Mitochondrial cardiolipin hydrolase

MacromoleculeName: Mitochondrial cardiolipin hydrolase / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on ester bonds; Phosphoric-diester hydrolases
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 22.884283 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: RPRREALFFP SQVTCTEALL RAPGAELAEL PEGCPCGLPH GESALSRLLR ALLAARASLD LCLFAFSSPQ LGRAVQLLHQ RGVRVRVVT DCDYMALNGS QIGLLRKAGI QVRHDQDPGY MHHKFAIVDK RVLITGSLNW TTQAIQNNRE NVLITEDDEY V RLFLEEFE ...String:
RPRREALFFP SQVTCTEALL RAPGAELAEL PEGCPCGLPH GESALSRLLR ALLAARASLD LCLFAFSSPQ LGRAVQLLHQ RGVRVRVVT DCDYMALNGS QIGLLRKAGI QVRHDQDPGY MHHKFAIVDK RVLITGSLNW TTQAIQNNRE NVLITEDDEY V RLFLEEFE RIWEQFNPTK YTFFPPKKSH GSCAPPVSRA GGRLLS

UniProtKB: Mitochondrial cardiolipin hydrolase

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Macromolecule #2: Cullin-2

MacromoleculeName: Cullin-2 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 88.858664 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: SASWSHPQFE KGGGSGGGSG TSLKPRVVDF DETWNKLLTT IKAVVMLEYV ERATWNDRFS DIYALCVAYP EPLGERLYTE TKIFLENHV RHLHKRVLES EEQVLVMYHR YWEEYSKGAD YMDCLYRYLN TQFIKKNKLT EADLQYGYGG VDMNEPLMEI G ELALDMWR ...String:
SASWSHPQFE KGGGSGGGSG TSLKPRVVDF DETWNKLLTT IKAVVMLEYV ERATWNDRFS DIYALCVAYP EPLGERLYTE TKIFLENHV RHLHKRVLES EEQVLVMYHR YWEEYSKGAD YMDCLYRYLN TQFIKKNKLT EADLQYGYGG VDMNEPLMEI G ELALDMWR KLMVEPLQAI LIRMLLREIK NDRGGEDPNQ KVIHGVINSF VHVEQYKKKF PLKFYQEIFE SPFLTETGEY YK QEASNLL QESNCSQYME KVLGRLKDEE IRCRKYLHPS SYTKVIHECQ QRMVADHLQF LHAECHNIIR QEKKNDMANM YVL LRAVST GLPHMIQELQ NHIHDEGLRA TSNLTQENMP TLFVESVLEV HGKFVQLINT VLNGDQHFMS ALDKALTSVV NYRE PKSVC KAPELLAKYC DNLLKKSAKG MTENEVEDRL TSFITVFKYI DDKDVFQKFY ARMLAKRLIH GLSMSMDSEE AMINK LKQA CGYEFTSKLH RMYTDMSVSA DLNNKFNNFI KNQDTVIDLG ISFQIYVLQA GAWPLTQAPS STFAIPQELE KSVQMF ELF YSQHFSGRKL TWLHYLCTGE VKMNYLGKPY VAMVTTYQMA VLLAFNNSET VSYKELQDST QMNEKELTKT IKSLLDV KM INHDSEKEDI DAESSFSLNM NFSSKRTKFK ITTSMQKDTP QEMEQTRSAV DEDRKMYLQA AIVRIMKARK VLRHNALI Q EVISQSRARF NPSISMIKKC IEVLIDKQYI ERSQASADEY SYV

UniProtKB: Cullin-2

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Macromolecule #3: Elongin-C

MacromoleculeName: Elongin-C / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 10.84342 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MYVKLISSDG HEFIVKREHA LTSGTIKAML SGPGQFAENE TNEVNFREIP SHVLSKVCMY FTYKVRYTNS STEIPEFPIA PEIALELLM AANFLDC

UniProtKB: Elongin-C

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Macromolecule #4: E3 ubiquitin-protein ligase RBX1, N-terminally processed

MacromoleculeName: E3 ubiquitin-protein ligase RBX1, N-terminally processed
type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.19683 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
SHMGAGKKRF EVKKWNAVAL WAWDIVVDNC AICRNHIMDL CIECQANQAS ATSEECTVAW GVCNHAFHFH CISRWLKTRQ VCPLDNREW EFQKYGH

UniProtKB: E3 ubiquitin-protein ligase RBX1

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Macromolecule #5: Protein fem-1 homolog B

MacromoleculeName: Protein fem-1 homolog B / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 70.355062 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MEGLAGYVYK AASEGKVLTL AALLLNRSES DIRYLLGYVS QQGGQRSTPL IIAARNGHAK VVRLLLEHYR VQTQQTGTVR FDGYVIDGA TALWCAAGAG HFEVVKLLVS HGANVNHTTV TNSTPLRAAC FDGRLDIVKY LVENNANISI ANKYDNTCLM I AAYKGHTD ...String:
MEGLAGYVYK AASEGKVLTL AALLLNRSES DIRYLLGYVS QQGGQRSTPL IIAARNGHAK VVRLLLEHYR VQTQQTGTVR FDGYVIDGA TALWCAAGAG HFEVVKLLVS HGANVNHTTV TNSTPLRAAC FDGRLDIVKY LVENNANISI ANKYDNTCLM I AAYKGHTD VVRYLLEQRA DPNAKAHCGA TALHFAAEAG HIDIVKELIK WRAAIVVNGH GMTPLKVAAE SCKADVVELL LS HADCDRR SRIEALELLG ASFANDRENY DIIKTYHYLY LAMLERFQDG DNILEKEVLP PIHAYGNRTE CRNPQELESI RQD RDALHM EGLIVRERIL GADNIDVSHP IIYRGAVYAD NMEFEQCIKL WLHALHLRQK GNRNTHKDLL RFAQVFSQMI HLNE TVKAP DIECVLRCSV LEIEQSMNRV KNISDADVHN AMDNYECNLY TFLYLVCIST KTQCSEEDQC KINKQIYNLI HLDPR TREG FTLLHLAVNS NTPVDDFHTN DVCSFPNALV TKLLLDCGAE VNAVDNEGNS ALHIIVQYNR PISDFLTLHS IIISLV EAG AHTDMTNKQN KTPLDKSTTG VSEILLKTQM KMSLKCLAAR AVRANDINYQ DQIPRTLEEF VGFH

UniProtKB: Protein fem-1 homolog B

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Macromolecule #6: Elongin-B

MacromoleculeName: Elongin-B / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.147781 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MDVFLMIRRH KTTIFTDAKE SSTVFELKRI VEGILKRPPD EQRLYKDDQL LDDGKTLGEC GFTSQTARPQ APATVGLAFR ADDTFEALC IEPFSSPPEL PDVMKPQDSG SSANEQAVQ

UniProtKB: Elongin-B

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Macromolecule #7: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 7 / Number of copies: 6 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K

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Electron microscopy

MicroscopeFEI MORGAGNI
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 56.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.9 µm / Nominal defocus min: 1.8 µm

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.93 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 97465
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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