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- EMDB-73365: p97Ufd1-Npl4 complex processing poly-ubiquitinated substrate in t... -

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Basic information

Entry
Database: EMDB / ID: EMD-73365
Titlep97Ufd1-Npl4 complex processing poly-ubiquitinated substrate in the presence of ATP
Map data
Sample
  • Complex: p97-Ufd1-Npl4 complex processing poly-ubiquitinated substrate in the presence of ATP
    • Protein or peptide: Transitional endoplasmic reticulum ATPase
    • Protein or peptide: Nuclear protein localization protein 4 homolog
    • Protein or peptide: Ubiquitin recognition factor in ER-associated degradation protein 1
    • Protein or peptide: Ubiquitin
  • Ligand: ADENOSINE-5'-TRIPHOSPHATE
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
Keywordsp97 / VCP / AAA+ ATPase / TRANSLOCASE
Function / homology
Function and homology information


UFD1-NPL4 complex / negative regulation of RIG-I signaling pathway / flavin adenine dinucleotide catabolic process / VCP-NSFL1C complex / endoplasmic reticulum stress-induced pre-emptive quality control / endosome to lysosome transport via multivesicular body sorting pathway / cytoplasmic ubiquitin ligase complex / BAT3 complex binding / cellular response to arsenite ion / protein-DNA covalent cross-linking repair ...UFD1-NPL4 complex / negative regulation of RIG-I signaling pathway / flavin adenine dinucleotide catabolic process / VCP-NSFL1C complex / endoplasmic reticulum stress-induced pre-emptive quality control / endosome to lysosome transport via multivesicular body sorting pathway / cytoplasmic ubiquitin ligase complex / BAT3 complex binding / cellular response to arsenite ion / protein-DNA covalent cross-linking repair / Derlin-1 retrotranslocation complex / positive regulation of protein K63-linked deubiquitination / deubiquitinase activator activity / cytoplasm protein quality control / positive regulation of oxidative phosphorylation / aggresome assembly / ubiquitin-modified protein reader activity / regulation of protein localization to chromatin / cellular response to misfolded protein / mitotic spindle disassembly / VCP-NPL4-UFD1 AAA ATPase complex / positive regulation of mitochondrial membrane potential / vesicle-fusing ATPase / K48-linked polyubiquitin modification-dependent protein binding / nuclear outer membrane-endoplasmic reticulum membrane network / K63-linked polyubiquitin modification-dependent protein binding / NAD+ metabolic process / regulation of aerobic respiration / retrograde protein transport, ER to cytosol / stress granule disassembly / ATPase complex / negative regulation of type I interferon production / ubiquitin-specific protease binding / regulation of synapse organization / Golgi organization / ciliary transition zone / positive regulation of ATP biosynthetic process / ubiquitin-like protein ligase binding / RHOH GTPase cycle / intracellular membrane-bounded organelle / MHC class I protein binding / polyubiquitin modification-dependent protein binding / autophagosome maturation / ribosomal large subunit export from nucleus / endoplasmic reticulum to Golgi vesicle-mediated transport / negative regulation of hippo signaling / HSF1 activation / interstrand cross-link repair / ATP metabolic process / translesion synthesis / Attachment and Entry / Protein methylation / endoplasmic reticulum unfolded protein response / ERAD pathway / negative regulation of protein localization to chromatin / proteasomal protein catabolic process / lipid droplet / ciliary tip / proteasome complex / viral genome replication / Josephin domain DUBs / skeletal system development / macroautophagy / ubiquitin binding / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / negative regulation of smoothened signaling pathway / establishment of protein localization / positive regulation of protein-containing complex assembly / Hh mutants are degraded by ERAD / Hedgehog ligand biogenesis / Defective CFTR causes cystic fibrosis / Translesion Synthesis by POLH / positive regulation of non-canonical NF-kappaB signal transduction / ADP binding / modification-dependent protein catabolic process / ABC-family proteins mediated transport / autophagy / protein tag activity / cytoplasmic stress granule / Aggrephagy / positive regulation of protein catabolic process / azurophil granule lumen / Ovarian tumor domain proteases / KEAP1-NFE2L2 pathway / positive regulation of canonical Wnt signaling pathway / double-strand break repair / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / cellular response to heat / E3 ubiquitin ligases ubiquitinate target proteins / site of double-strand break / ribosome biogenesis / ATPase binding / Neddylation / ribosomal large subunit assembly / secretory granule lumen / protein phosphatase binding / regulation of apoptotic process / cytosolic large ribosomal subunit / ficolin-1-rich granule lumen / ubiquitin-dependent protein catabolic process
Similarity search - Function
Nuclear pore localisation protein Npl4, ubiquitin-like domain / Nuclear pore localisation protein NPL4 / Ubiquitin fusion degradation protein Ufd1-like / Ufd1-like, Nn domain / : / : / Ubiquitin fusion degradation protein UFD1, N-terminal subdomain 1 / Ubiquitin fusion degradation protein UFD1, N-terminal subdomain 2 / NPL4, zinc-binding putative / NPL4 family, putative zinc binding region ...Nuclear pore localisation protein Npl4, ubiquitin-like domain / Nuclear pore localisation protein NPL4 / Ubiquitin fusion degradation protein Ufd1-like / Ufd1-like, Nn domain / : / : / Ubiquitin fusion degradation protein UFD1, N-terminal subdomain 1 / Ubiquitin fusion degradation protein UFD1, N-terminal subdomain 2 / NPL4, zinc-binding putative / NPL4 family, putative zinc binding region / Nuclear pore localisation protein NPL4, C-terminal / Nuclear protein localization protein 4 / NPL4 family / Zinc finger domain / AAA ATPase, CDC48 family / Cell division protein 48 (CDC48), N-terminal domain / : / CDC48, N-terminal subdomain / Cell division protein 48 (CDC48) N-terminal domain / CDC48, domain 2 / Cell division protein 48 (CDC48), domain 2 / Cell division protein 48 (CDC48) domain 2 / Zinc finger RanBP2 type profile. / CDC48 domain 2-like superfamily / Zinc finger, RanBP2-type superfamily / Zinc finger RanBP2-type signature. / Zinc finger, RanBP2-type / Aspartate decarboxylase-like domain superfamily / Ribosomal L40e family / Ribosomal_L40e / Ribosomal protein L40e / Ribosomal protein L40e superfamily / MPN domain / AAA ATPase, AAA+ lid domain / AAA+ lid domain / MPN domain profile. / ATPase, AAA-type, conserved site / AAA-protein family signature. / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / : / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Ubiquitin-ribosomal protein eL40A fusion protein / Transitional endoplasmic reticulum ATPase / Nuclear protein localization protein 4 homolog / Ubiquitin recognition factor in ER-associated degradation protein 1
Similarity search - Component
Biological speciesHomo sapiens (human) / Saccharomyces cerevisiae (brewer's yeast)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.97 Å
AuthorsLi H / Rapoport T
Funding support United States, 1 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Sci Rep / Year: 2026
Title: The deubiquitinating enzyme Otu1 releases substrates from the conserved initiation complex of the Cdc48/p97 ATPase for proteasomal degradation.
Authors: Hao Li / Haipeng Guan / Tom A Rapoport /
History
DepositionOct 16, 2025-
Header (metadata) releaseMar 25, 2026-
Map releaseMar 25, 2026-
UpdateMar 25, 2026-
Current statusMar 25, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_73365.png

Downloads & links

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Map

FileDownload / File: emd_73365.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 400 pix.
= 330.8 Å		0.83 Å/pix.
x 400 pix.
= 330.8 Å		0.83 Å/pix.
x 400 pix.
= 330.8 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.827 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.1
Minimum - Maximum-0.23381169 - 0.6460696
Average (Standard dev.)0.0028923238 (±0.01573028)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 330.80002 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : p97-Ufd1-Npl4 complex processing poly-ubiquitinated substrate in ...

EntireName: p97-Ufd1-Npl4 complex processing poly-ubiquitinated substrate in the presence of ATP
Components
  • Complex: p97-Ufd1-Npl4 complex processing poly-ubiquitinated substrate in the presence of ATP
    • Protein or peptide: Transitional endoplasmic reticulum ATPase
    • Protein or peptide: Nuclear protein localization protein 4 homolog
    • Protein or peptide: Ubiquitin recognition factor in ER-associated degradation protein 1
    • Protein or peptide: Ubiquitin
  • Ligand: ADENOSINE-5'-TRIPHOSPHATE
  • Ligand: ADENOSINE-5'-DIPHOSPHATE

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Supramolecule #1: p97-Ufd1-Npl4 complex processing poly-ubiquitinated substrate in ...

SupramoleculeName: p97-Ufd1-Npl4 complex processing poly-ubiquitinated substrate in the presence of ATP
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 800 KDa

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Macromolecule #1: Transitional endoplasmic reticulum ATPase

MacromoleculeName: Transitional endoplasmic reticulum ATPase / type: protein_or_peptide / ID: 1 / Number of copies: 6 / Enantiomer: LEVO / EC number: vesicle-fusing ATPase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 89.435828 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MASGADSKGD DLSTAILKQK NRPNRLIVDE AINEDNSVVS LSQPKMDELQ LFRGDTVLLK GKKRREAVCI VLSDDTCSDE KIRMNRVVR NNLRVRLGDV ISIQPCPDVK YGKRIHVLPI DDTVEGITGN LFEVYLKPYF LEAYRPIRKG DIFLVRGGMR A VEFKVVET ...String:
MASGADSKGD DLSTAILKQK NRPNRLIVDE AINEDNSVVS LSQPKMDELQ LFRGDTVLLK GKKRREAVCI VLSDDTCSDE KIRMNRVVR NNLRVRLGDV ISIQPCPDVK YGKRIHVLPI DDTVEGITGN LFEVYLKPYF LEAYRPIRKG DIFLVRGGMR A VEFKVVET DPSPYCIVAP DTVIHCEGEP IKREDEEESL NEVGYDDIGG CRKQLAQIKE MVELPLRHPA LFKAIGVKPP RG ILLYGPP GTGKTLIARA VANETGAFFF LINGPEIMSK LAGESESNLR KAFEEAEKNA PAIIFIDELD AIAPKREKTH GEV ERRIVS QLLTLMDGLK QRAHVIVMAA TNRPNSIDPA LRRFGRFDRE VDIGIPDATG RLEILQIHTK NMKLADDVDL EQVA NETHG HVGADLAALC SEAALQAIRK KMDLIDLEDE TIDAEVMNSL AVTMDDFRWA LSQSNPSALR ETVVEVPQVT WEDIG GLED VKRELQELVQ YPVEHPDKFL KFGMTPSKGV LFYGPPGCGK TLLAKAIANE CQANFISIKG PELLTMWFGE SEANVR EIF DKARQAAPCV LFFDQLDSIA KARGGNIGDG GGAADRVINQ ILTEMDGMST KKNVFIIGAT NRPDIIDPAI LRPGRLD QL IYIPLPDEKS RVAILKANLR KSPVAKDVDL EFLAKMTNGF SGADLTEICQ RACKLAIRES IESEIRRERE RQTNPSAM E VEEDDPVPEI RRDHFEEAMR FARRSVSDND IRKYEMFAQT LQQSRGFGSF RFPSGNQGGA GPSQGSGGGT GGSVYTEDN DDDLYG

UniProtKB: Transitional endoplasmic reticulum ATPase

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Macromolecule #2: Nuclear protein localization protein 4 homolog

MacromoleculeName: Nuclear protein localization protein 4 homolog / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 68.202016 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MAESIIIRVQ SPDGVKRITA TKRETAATFL KKVAKEFGFQ NNGFSVYINR NKTGEITASS NKSLNLLKIK HGDLLFLFPS SLAGPSSEM ETSVPPGFKV FGAPNVVEDE IDQYLSKQDG KIYRSRDPQL CRHGPLGKCV HCVPLEPFDE DYLNHLEPPV K HMSFHAYI ...String:
MAESIIIRVQ SPDGVKRITA TKRETAATFL KKVAKEFGFQ NNGFSVYINR NKTGEITASS NKSLNLLKIK HGDLLFLFPS SLAGPSSEM ETSVPPGFKV FGAPNVVEDE IDQYLSKQDG KIYRSRDPQL CRHGPLGKCV HCVPLEPFDE DYLNHLEPPV K HMSFHAYI RKLTGGADKG KFVALENISC KIKSGCEGHL PWPNGICTKC QPSAITLNRQ KYRHVDNIMF ENHTVADRFL DF WRKTGNQ HFGYLYGRYT EHKDIPLGIR AEVAAIYEPP QIGTQNSLEL LEDPKAEVVD EIAAKLGLRK VGWIFTDLVS EDT RKGTVR YSRNKDTYFL SSEECITAGD FQNKHPNMCR LSPDGHFGSK FVTAVATGGP DNQVHFEGYQ VSNQCMALVR DECL LPCKD APELGYAKES SSEQYVPDVF YKDVDKFGNE ITQLARPLPV EYLIIDITTT FPKDPVYTFS ISQNPFPIEN RDVLG ETQD FHSLATYLSQ NTSSVFLDTI SDFHLLLFLV TNEVMPLQDS ISLLLEAVRT RNEELAQTWK RSEQWATIEQ LCSTVG GQL PGLHEYGAVG GSTHTATAAM WACQHCTFMN QPGTGHCEMC SLPRT

UniProtKB: Nuclear protein localization protein 4 homolog

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Macromolecule #3: Ubiquitin recognition factor in ER-associated degradation protein 1

MacromoleculeName: Ubiquitin recognition factor in ER-associated degradation protein 1
type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 34.544316 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MFSFNMFDHP IPRVFQNRFS TQYRCFSVSM LAGPNDRSDV EKGGKIIMPP SALDQLSRLN ITYPMLFKLT NKNSDRMTHC GVLEFVADE GICYLPHWMM QNLLLEEGGL VQVESVNLQV ATYSKFQPQS PDFLDITNPK AVLENALRNF ACLTTGDVIA I NYNEKIYE ...String:
MFSFNMFDHP IPRVFQNRFS TQYRCFSVSM LAGPNDRSDV EKGGKIIMPP SALDQLSRLN ITYPMLFKLT NKNSDRMTHC GVLEFVADE GICYLPHWMM QNLLLEEGGL VQVESVNLQV ATYSKFQPQS PDFLDITNPK AVLENALRNF ACLTTGDVIA I NYNEKIYE LRVMETKPDK AVSIIECDMN VDFDAPLGYK EPERQVQHEE STEGEADHSG YAGELGFRAF SGSGNRLDGK KK GVEPSPS PIKPGDIKRG IPNYEFKLGK ITFIRNSRPL VKKVEEDEAG GRFVAFSGEG QSLRKKGRKP

UniProtKB: Ubiquitin recognition factor in ER-associated degradation protein 1

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Macromolecule #4: Ubiquitin

MacromoleculeName: Ubiquitin / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Molecular weightTheoretical: 8.568769 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MQIFVKTLTG KTITLEVESS DTIDNVKSKI QDKEGIPPDQ QRLIFAGKQL EDGRTLSDYN IQKESTLHLV LRLRGG

UniProtKB: Ubiquitin-ribosomal protein eL40A fusion protein

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Macromolecule #5: ADENOSINE-5'-TRIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 5 / Number of copies: 8 / Formula: ATP
Molecular weightTheoretical: 507.181 Da
Chemical component information

ChemComp-ATP:
ADENOSINE-5'-TRIPHOSPHATE / ATP, energy-carrying molecule*YM

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Macromolecule #6: ADENOSINE-5'-DIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-DIPHOSPHATE / type: ligand / ID: 6 / Number of copies: 3 / Formula: ADP
Molecular weightTheoretical: 427.201 Da
Chemical component information

ChemComp-ADP:
ADENOSINE-5'-DIPHOSPHATE / ADP, energy-carrying molecule*YM

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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

Concentration1 mg/mL
BufferpH: 7.4
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7lmz

Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.97 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 65959
Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final 3D classificationNumber classes: 2

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