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- PDB-8a9j: Cryo-EM structure of USP1-UAF1 bound to FANCI and mono-ubiquitina... -
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Basic information
Entry | Database: PDB / ID: 8a9j | |||||||||
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Title | Cryo-EM structure of USP1-UAF1 bound to FANCI and mono-ubiquitinated FANCD2 without ML323 (consensus reconstruction) | |||||||||
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![]() | HYDROLASE / Deubiquitinase / Complex / Enzyme-Substrate / Inhibitor | |||||||||
Function / homology | ![]() regulation of protein monoubiquitination / positive regulation of error-prone translesion synthesis / Signaling by cytosolic PDGFRA and PDGFRB fusion proteins / regulation of CD40 signaling pathway / double-strand break repair involved in meiotic recombination / gamete generation / monoubiquitinated protein deubiquitination / homologous chromosome pairing at meiosis / regulation of regulatory T cell differentiation / neuronal stem cell population maintenance ...regulation of protein monoubiquitination / positive regulation of error-prone translesion synthesis / Signaling by cytosolic PDGFRA and PDGFRB fusion proteins / regulation of CD40 signaling pathway / double-strand break repair involved in meiotic recombination / gamete generation / monoubiquitinated protein deubiquitination / homologous chromosome pairing at meiosis / regulation of regulatory T cell differentiation / neuronal stem cell population maintenance / seminiferous tubule development / brain morphogenesis / deubiquitinase activator activity / mitotic intra-S DNA damage checkpoint signaling / DNA repair complex / skeletal system morphogenesis / skin development / homeostasis of number of cells / protein deubiquitination / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / embryonic organ development / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / single fertilization / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / 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 / interstrand cross-link repair / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / positive regulation of double-strand break repair via homologous recombination / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / p75NTR recruits signalling complexes / APC-Cdc20 mediated degradation of Nek2A / regulation of DNA repair / InlA-mediated entry of Listeria monocytogenes into host cells / Regulation of pyruvate metabolism / response to UV / TRAF6-mediated induction of TAK1 complex within TLR4 complex / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / Regulation of innate immune responses to cytosolic DNA / NF-kB is activated and signals survival / Downregulation of ERBB2:ERBB3 signaling / NRIF signals cell death from the nucleus / Pexophagy / VLDLR internalisation and degradation / Regulation of PTEN localization / Activated NOTCH1 Transmits Signal to the Nucleus / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / condensed chromosome / Translesion synthesis by REV1 / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / InlB-mediated entry of Listeria monocytogenes into host cell / Translesion synthesis by POLK / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Downregulation of TGF-beta receptor signaling / Josephin domain DUBs / DNA polymerase binding / TICAM1, RIP1-mediated IKK complex recruitment / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / positive regulation of protein ubiquitination / Translesion synthesis by POLI / Gap-filling DNA repair synthesis and ligation in GG-NER / IKK complex recruitment mediated by RIP1 / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / Regulation of activated PAK-2p34 by proteasome mediated degradation / TNFR1-induced NF-kappa-B signaling pathway / PINK1-PRKN Mediated Mitophagy / TCF dependent signaling in response to WNT / Autodegradation of Cdh1 by Cdh1:APC/C / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / APC/C:Cdc20 mediated degradation of Securin / activated TAK1 mediates p38 MAPK activation / Regulation of NF-kappa B signaling / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / Regulation of signaling by CBL / NIK-->noncanonical NF-kB signaling / NOTCH3 Activation and Transmission of Signal to the Nucleus / SCF-beta-TrCP mediated degradation of Emi1 / Negative regulators of DDX58/IFIH1 signaling / Deactivation of the beta-catenin transactivating complex / TNFR2 non-canonical NF-kB pathway Similarity search - Function | |||||||||
Biological species | ![]() synthetic construct (others) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | |||||||||
![]() | Rennie, M.L. / Walden, H. | |||||||||
Funding support | European Union, ![]()
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![]() | ![]() Title: Cryo-EM reveals a mechanism of USP1 inhibition through a cryptic binding site. Authors: Martin L Rennie / Connor Arkinson / Viduth K Chaugule / Helen Walden / ![]() Abstract: Repair of DNA damage is critical to genomic integrity and frequently disrupted in cancers. Ubiquitin-specific protease 1 (USP1), a nucleus-localized deubiquitinase, lies at the interface of multiple ...Repair of DNA damage is critical to genomic integrity and frequently disrupted in cancers. Ubiquitin-specific protease 1 (USP1), a nucleus-localized deubiquitinase, lies at the interface of multiple DNA repair pathways and is a promising drug target for certain cancers. Although multiple inhibitors of this enzyme, including one in phase 1 clinical trials, have been established, their binding mode is unknown. Here, we use cryo-electron microscopy to study an assembled enzyme-substrate-inhibitor complex of USP1 and the well-established inhibitor, ML323. Achieving 2.5-Å resolution, with and without ML323, we find an unusual binding mode in which the inhibitor disrupts part of the hydrophobic core of USP1. The consequent conformational changes in the secondary structure lead to subtle rearrangements in the active site that underlie the mechanism of inhibition. These structures provide a platform for structure-based drug design targeting USP1. | |||||||||
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 574.6 KB | Display | ![]() |
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PDB format | ![]() | 443.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
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Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 87.5 KB | Display | |
Data in CIF | ![]() | 131.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 15284MC ![]() 7zh3C ![]() 7zh4C ![]() 8a9kC C: citing same article ( M: map data used to model this data |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Fanconi anemia group ... , 2 types, 2 molecules AB
#1: Protein | Mass: 150459.125 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#2: Protein | Mass: 164623.828 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: Ubiquitin conjugated to K561 / Source: (gene. exp.) ![]() ![]() ![]() |
-Protein , 3 types, 3 molecules CDE
#3: Protein | Mass: 8875.125 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#4: Protein | Mass: 88390.273 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#5: Protein | Mass: 78300.656 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-DNA chain / Non-polymers , 2 types, 3 molecules ST

#6: DNA chain | Mass: 5177.820 Da / Num. of mol.: 2 / Source method: obtained synthetically Details: Actual sequence: TGATCAGAGGTCATTTGAATTCATGGCTTCGAGCTTCATGTAGAGTCGACGGTGCTGGGAT Source: (synth.) synthetic construct (others) #7: Chemical | ChemComp-ZN / | |
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-Details
Has ligand of interest | N |
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Has protein modification | Y |
-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 |
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Source (natural) | Organism: ![]() | ||||||||||||||||||
Source (recombinant) | Organism: ![]() ![]() | ||||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: 9.3 uM USP1-UAF1, 1.8 uM FANCI-FANCD2Ub, 2.2 uM dsDNA (61 base-pairs), 18 uM ML323 | ||||||||||||||||||
Vitrification | Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 288 K / Details: blotted for 3.0 secs before plunging |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm |
Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.19.2_4158: / Classification: refinement | |||||||||||||||||||||||||||||||||||
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EM software |
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Image processing | Details: 2x binning | |||||||||||||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 6716868 | |||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 583484 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||
Atomic model building | B value: 94.9 / Space: REAL | |||||||||||||||||||||||||||||||||||
Atomic model building | 3D fitting-ID: 1 / Source name: PDB / Type: experimental model
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Refine LS restraints |
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