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Yorodumi- PDB-9uf8: The cryo-EM structure of 26S proteasome-Midnolin complex in the M... -
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Open data
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Basic information
| Entry | Database: PDB / ID: 9uf8 | ||||||||||||||||||||||||
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| Title | The cryo-EM structure of 26S proteasome-Midnolin complex in the MA state | ||||||||||||||||||||||||
Components |
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Keywords | HYDROLASE / Midnolin / 26S proteasome / complex | ||||||||||||||||||||||||
| Function / homology | Function and homology informationnegative regulation of glucokinase activity / positive regulation of inclusion body assembly / thyrotropin-releasing hormone receptor binding / nuclear proteasome complex / host-mediated perturbation of viral transcription / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / proteasome accessory complex / purine ribonucleoside triphosphate binding / integrator complex ...negative regulation of glucokinase activity / positive regulation of inclusion body assembly / thyrotropin-releasing hormone receptor binding / nuclear proteasome complex / host-mediated perturbation of viral transcription / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / proteasome accessory complex / purine ribonucleoside triphosphate binding / integrator complex / proteasome regulatory particle / CD8-positive, alpha-beta T cell differentiation / thymic T cell selection / cytosolic proteasome complex / CD8-positive, alpha-beta T cell homeostasis / positive regulation of proteasomal protein catabolic process / proteasome-activating activity / Antigen processing: Ub, ATP-independent proteasomal degradation / proteasome regulatory particle, lid subcomplex / proteasome regulatory particle, base subcomplex / negative regulation of programmed cell death / T-helper 1 cell differentiation / negative regulation of regulatory T cell differentiation / protein K63-linked deubiquitination / metal-dependent deubiquitinase activity / cellular response to type I interferon / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Proteasome assembly / T-helper 17 cell differentiation / retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum / Cross-presentation of soluble exogenous antigens (endosomes) / transcription factor binding / Somitogenesis / flagellated sperm motility / K63-linked deubiquitinase activity / Homologous DNA Pairing and Strand Exchange / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / Resolution of D-loop Structures through Holliday Junction Intermediates / proteasome binding / Impaired BRCA2 binding to RAD51 / myofibril / negative regulation of insulin secretion / positive regulation of RNA polymerase II transcription preinitiation complex assembly / proteasomal ubiquitin-independent protein catabolic process / general transcription initiation factor binding / Presynaptic phase of homologous DNA pairing and strand exchange / proteasome storage granule / protein deubiquitination / AMPK-induced ERAD and lysosome mediated degradation of PD-L1(CD274) / polyubiquitin modification-dependent protein binding / proteasome endopeptidase complex / NF-kappaB binding / proteasome core complex, beta-subunit complex / endopeptidase activator activity / threonine-type endopeptidase activity / proteasome core complex, alpha-subunit complex / proteasome assembly / mRNA export from nucleus / GSK3B-mediated proteasomal degradation of PD-L1(CD274) / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / SPOP-mediated proteasomal degradation of PD-L1(CD274) / regulation of G1/S transition of mitotic cell cycle / immune system process / enzyme regulator activity / regulation of macroautophagy / positive regulation of interleukin-2 production / ERAD pathway / ciliary tip / Ribosome Quality Control (RQC) complex extracts and degrades nascent peptide / response to type II interferon / inclusion body / TBP-class protein binding / stem cell differentiation / proteasome complex / : / regulation of proteasomal protein catabolic process / sarcomere / sperm end piece / Regulation of activated PAK-2p34 by proteasome mediated degradation / ubiquitin binding / proteasomal protein catabolic process / Autodegradation of Cdh1 by Cdh1:APC/C / negative regulation of inflammatory response to antigenic stimulus / APC/C:Cdc20 mediated degradation of Securin / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / lipopolysaccharide binding / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / AUF1 (hnRNP D0) binds and destabilizes mRNA / TNFR2 non-canonical NF-kB pathway / Assembly of the pre-replicative complex / Vpu mediated degradation of CD4 / P-body / Cdc20:Phospho-APC/C mediated degradation of Cyclin A Similarity search - Function | ||||||||||||||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.32 Å | ||||||||||||||||||||||||
Authors | Wang, H.Y. / Xu, W.Q. / Wei, C.C. | ||||||||||||||||||||||||
| Funding support | China, 4items
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Citation | Journal: Protein Cell / Year: 2026Title: Structure-based engineering of the midnolin-proteasome pathway for targeted protein degradation. Authors: Hongyang Wang / Ying Zheng / Tiantian Wang / Xue Zhang / Peipei Wang / Chuancun Wei / Hongyue Li / Quan Wang / Lu Zhang / Xisong Ke / Wenqing Xu / ![]() | ||||||||||||||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9uf8.cif.gz | 2.3 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb9uf8.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9uf8.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/uf/9uf8 ftp://data.pdbj.org/pub/pdb/validation_reports/uf/9uf8 | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 64103MC ![]() 9m2wC ![]() 9ug9C C: citing same article ( M: map data used to model this data |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Proteasome subunit beta type- ... , 7 types, 14 molecules NnOoPpQqRrSsTt
| #1: Protein | Mass: 25377.652 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: P28072, proteasome endopeptidase complex #3: Protein | Mass: 30000.418 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: Q99436, proteasome endopeptidase complex #5: Protein | Mass: 22972.896 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P49720#7: Protein | Mass: 22864.277 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P49721#9: Protein | Mass: 28510.248 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: P28074, proteasome endopeptidase complex #11: Protein | Mass: 26522.396 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P20618#13: Protein | Mass: 29231.178 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P28070 |
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-26S proteasome regulatory subunit ... , 6 types, 6 molecules FABCDE
| #2: Protein | Mass: 49266.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P17980 |
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| #28: Protein | Mass: 48700.805 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P35998 |
| #30: Protein | Mass: 49260.504 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62191 |
| #31: Protein | Mass: 45694.047 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62195 |
| #32: Protein | Mass: 47426.141 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P43686 |
| #33: Protein | Mass: 44241.008 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62333 |
-Proteasome subunit alpha type- ... , 7 types, 14 molecules GgHhIiJjKkLlMm
| #4: Protein | Mass: 27432.459 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60900#6: Protein | Mass: 25927.535 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25787#8: Protein | Mass: 29525.842 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25789#10: Protein | Mass: 27929.891 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O14818#12: Protein | Mass: 26435.977 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P28066#14: Protein | Mass: 29595.627 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25786#15: Protein | Mass: 28469.252 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P25788 |
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-26S proteasome non-ATPase regulatory subunit ... , 11 types, 11 molecules UVWXYZabcdf
| #16: Protein | Mass: 105958.234 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q99460 |
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| #17: Protein | Mass: 61066.500 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43242 |
| #18: Protein | Mass: 52979.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O00232 |
| #19: Protein | Mass: 47526.688 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O00231 |
| #20: Protein | Mass: 45592.285 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q15008 |
| #21: Protein | Mass: 37086.441 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P51665 |
| #22: Protein | Mass: 42995.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UNM6 |
| #23: Protein | Mass: 40781.590 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P55036 |
| #24: Protein | Mass: 34620.023 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)References: UniProt: O00487, Hydrolases; Acting on peptide bonds (peptidases); Omega peptidases |
| #25: Protein | Mass: 39667.871 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P48556 |
| #27: Protein | Mass: 100313.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q13200 |
-Protein , 2 types, 2 molecules eu
| #26: Protein | Mass: 8284.611 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P60896 |
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| #29: Protein | Mass: 52076.520 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: MIDN / Production host: Homo sapiens (human) / References: UniProt: Q504T8 |
-Non-polymers , 2 types, 6 molecules 


| #34: Chemical | | #35: Chemical | ChemComp-ATP / |
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-Details
| Has ligand of interest | Y |
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| Has protein modification | N |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: 26S proteasome-Midnolin complex_MA state / Type: COMPLEX Entity ID: #28, #30-#33, #2, #4, #6, #8, #10, #12, #14-#15, #1, #3, #5, #7, #9, #11, #13, #16-#27, #29 Source: RECOMBINANT |
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| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: Homo sapiens (human) |
| Buffer solution | pH: 8 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 1200 nm |
| Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
| EM software |
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| CTF correction | Type: NONE | ||||||||||||
| 3D reconstruction | Resolution: 4.32 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 22328 / Symmetry type: POINT |
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Homo sapiens (human)
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