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- PDB-9m7o: Cryo-EM structure of Ufd2/Ubc4-ub complex with K29triUb(monomeric... -

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Basic information

Entry
Database: PDB / ID: 9m7o
TitleCryo-EM structure of Ufd2/Ubc4-ub complex with K29triUb(monomeric conformation)
Components
  • (Polyubiquitin-C) x 2
  • E4 ubiquitin-protein ligase UFD2
  • Ubiquitin
  • Ubiquitin-conjugating enzyme E2 4
KeywordsLIGASE / E4 enzyme / Ufd2 / branch Ub chains
Function / homology
Function and homology information


Peroxisomal protein import / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / mitochondria-associated ubiquitin-dependent protein catabolic process / cytoplasm protein quality control by the ubiquitin-proteasome system / E3 ubiquitin ligases ubiquitinate target proteins / ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway / ribosome-associated ubiquitin-dependent protein catabolic process / Formation of the ternary complex, and subsequently, the 43S complex / ubiquitin-ubiquitin ligase activity / E2 ubiquitin-conjugating enzyme ...Peroxisomal protein import / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / mitochondria-associated ubiquitin-dependent protein catabolic process / cytoplasm protein quality control by the ubiquitin-proteasome system / E3 ubiquitin ligases ubiquitinate target proteins / ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway / ribosome-associated ubiquitin-dependent protein catabolic process / Formation of the ternary complex, and subsequently, the 43S complex / ubiquitin-ubiquitin ligase activity / E2 ubiquitin-conjugating enzyme / Ribosomal scanning and start codon recognition / Translation initiation complex formation / proteasome binding / ubiquitin conjugating enzyme activity / SARS-CoV-1 modulates host translation machinery / cellular response to ethanol / Peptide chain elongation / Antigen processing: Ubiquitination & Proteasome degradation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / ubiquitin ligase complex / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / protein K48-linked ubiquitination / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / ERAD pathway / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / cytosolic ribosome / Membrane binding and targetting of GAG proteins / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Negative regulation of FLT3 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / rescue of stalled ribosome / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / APC-Cdc20 mediated degradation of Nek2A / p75NTR recruits signalling complexes / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / Regulation of innate immune responses to cytosolic DNA / NF-kB is activated and signals survival / Downregulation of ERBB2:ERBB3 signaling / Pexophagy / NRIF signals cell death from the nucleus / VLDLR internalisation and degradation / Regulation of PTEN localization / Activated NOTCH1 Transmits Signal to the Nucleus / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / TICAM1, RIP1-mediated IKK complex recruitment / Translesion synthesis by REV1 / Translesion synthesis by POLK / InlB-mediated entry of Listeria monocytogenes into host cell / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Downregulation of TGF-beta receptor signaling / Josephin domain DUBs / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / Regulation of activated PAK-2p34 by proteasome mediated degradation / ubiquitin binding / Translesion synthesis by POLI / IKK complex recruitment mediated by RIP1 / Gap-filling DNA repair synthesis and ligation in GG-NER / positive regulation of protein ubiquitination / PINK1-PRKN Mediated Mitophagy / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / TNFR1-induced NF-kappa-B signaling pathway / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / TCF dependent signaling in response to WNT / Asymmetric localization of PCP proteins / Regulation of NF-kappa B signaling / Ubiquitin-dependent degradation of Cyclin D
Similarity search - Function
Ubiquitin conjugation factor E4, core / Ubiquitin conjugation factor E4 / Ubiquitin elongating factor core / U-box domain / U-box domain profile. / Modified RING finger domain / U-box domain / Ubiquitin-conjugating enzyme, active site / Ubiquitin-conjugating (UBC) active site signature. / Ubiquitin-conjugating enzyme E2 ...Ubiquitin conjugation factor E4, core / Ubiquitin conjugation factor E4 / Ubiquitin elongating factor core / U-box domain / U-box domain profile. / Modified RING finger domain / U-box domain / Ubiquitin-conjugating enzyme, active site / Ubiquitin-conjugating (UBC) active site signature. / Ubiquitin-conjugating enzyme E2 / Ubiquitin-conjugating enzyme / Ubiquitin-conjugating (UBC) core domain profile. / Ubiquitin-conjugating enzyme E2, catalytic domain homologues / Ubiquitin-conjugating enzyme/RWD-like / S27a-like superfamily / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S27a / : / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Zinc-binding ribosomal protein / Zinc finger, RING/FYVE/PHD-type / Ubiquitin-like domain superfamily
Similarity search - Domain/homology
Polyubiquitin-C / Ubiquitin-conjugating enzyme E2 4 / E4 ubiquitin-protein ligase UFD2 / Ubiquitin-ribosomal protein eS31 fusion protein
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.14 Å
AuthorsTong, Z.B. / Liu, L.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)2137005,92253302 China
CitationJournal: To Be Published
Title: Structural basis for the ubiquitin E4 enzyme Ufd2-catalyzed K48/K29 branched ubiquitin chains
Authors: Tong, Z.B. / Liu, L.
History
DepositionMar 10, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Jul 30, 2025Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
B: Ubiquitin-conjugating enzyme E2 4
D: Polyubiquitin-C
E: Polyubiquitin-C
C: Ubiquitin
A: E4 ubiquitin-protein ligase UFD2


Theoretical massNumber of molelcules
Total (without water)152,3355
Polymers152,3355
Non-polymers00
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

#1: Protein Ubiquitin-conjugating enzyme E2 4 / E2 ubiquitin-conjugating enzyme 4 / Ubiquitin carrier protein 4 / Ubiquitin-protein ligase 4


Mass: 16442.586 Da / Num. of mol.: 1 / Mutation: C22S/C102S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast)
Gene: UBC4, YBR082C, YBR0745 / Production host: Escherichia coli (E. coli)
References: UniProt: P15731, E2 ubiquitin-conjugating enzyme
#2: Protein Polyubiquitin-C / Proximal Ub of K29tirUb


Mass: 8665.881 Da / Num. of mol.: 1 / Mutation: K48C
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBC / Production host: Escherichia coli (E. coli) / References: UniProt: P0CG48
#3: Protein Polyubiquitin-C / Distal Ub of K29tirUb


Mass: 8604.845 Da / Num. of mol.: 1 / Mutation: K29R
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBC / Production host: Escherichia coli (E. coli) / References: UniProt: P0CG48
#4: Protein Ubiquitin / Donor Ub


Mass: 8576.831 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RPS27A, UBA80, UBCEP1 / Production host: Escherichia coli (E. coli) / References: UniProt: P62979
#5: Protein E4 ubiquitin-protein ligase UFD2 / RING-type E3 ubiquitin transferase UFD2 / Ubiquitin conjugation factor E4 / Ubiquitin fusion ...RING-type E3 ubiquitin transferase UFD2 / Ubiquitin conjugation factor E4 / Ubiquitin fusion degradation protein 2 / UB fusion protein 2


Mass: 110044.523 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast)
Gene: UFD2, YDL190C, D1255 / Production host: Escherichia coli (E. coli)
References: UniProt: P54860, RING-type E3 ubiquitin transferase
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: Cryo-EM structure of Ufd2/Ubc4-ub complex with K29triUb(monomeric conformation)
Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Molecular weightValue: 162 kDa/nm / Experimental value: NO
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

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 50 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: NONE
3D reconstructionResolution: 4.14 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 347924 / Symmetry type: POINT
RefinementHighest resolution: 4.14 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0069518
ELECTRON MICROSCOPYf_angle_d0.99712886
ELECTRON MICROSCOPYf_dihedral_angle_d4.1461255
ELECTRON MICROSCOPYf_chiral_restr0.041470
ELECTRON MICROSCOPYf_plane_restr0.0041662

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