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- PDB-9fci: USP1 bound to KSQ-4279 and ubiquitin conjugated to FANCD2 (focuse... -

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Basic information

Entry
Database: PDB / ID: 9fci
TitleUSP1 bound to KSQ-4279 and ubiquitin conjugated to FANCD2 (focused refinement)
Components
  • Polyubiquitin-C
  • Ubiquitin carboxyl-terminal hydrolase 1
KeywordsHYDROLASE / INHIBITOR / DEUBIQUITINASE / COMPLEX / ENZYME-SUBSTRATE
Function / homology
Function and homology information


positive regulation of error-prone translesion synthesis / monoubiquitinated protein deubiquitination / protein deubiquitination / regulation of DNA repair / response to UV / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants ...positive regulation of error-prone translesion synthesis / monoubiquitinated protein deubiquitination / protein deubiquitination / regulation of DNA repair / response to UV / 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 / 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 / Constitutive Signaling by NOTCH1 HD Domain Mutants / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / 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 / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / p75NTR recruits signalling complexes / APC-Cdc20 mediated degradation of Nek2A / 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 / Regulation of PTEN localization / VLDLR internalisation and degradation / 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 / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Translesion synthesis by POLK / InlB-mediated entry of Listeria monocytogenes into host cell / 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 / Translesion synthesis by POLI / IKK complex recruitment mediated by RIP1 / Gap-filling DNA repair synthesis and ligation in GG-NER / PINK1-PRKN Mediated Mitophagy / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / TNFR1-induced NF-kappa-B signaling pathway / skeletal system development / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / TCF dependent signaling in response to WNT / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / positive regulation of receptor signaling pathway via JAK-STAT / Regulation of NF-kappa B signaling / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / activated TAK1 mediates p38 MAPK activation / Negative regulators of DDX58/IFIH1 signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Regulation of signaling by CBL / NOTCH3 Activation and Transmission of Signal to the Nucleus / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Degradation of DVL / Deactivation of the beta-catenin transactivating complex / Negative regulation of FGFR3 signaling / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Dectin-1 mediated noncanonical NF-kB signaling / Fanconi Anemia Pathway / Peroxisomal protein import / Degradation of AXIN / Regulation of TNFR1 signaling / Negative regulation of FGFR2 signaling / Stabilization of p53 / Hh mutants are degraded by ERAD / Negative regulation of FGFR4 signaling / Activation of NF-kappaB in B cells / Downregulation of SMAD2/3:SMAD4 transcriptional activity / Negative regulation of FGFR1 signaling / EGFR downregulation / Degradation of GLI1 by the proteasome
Similarity search - Function
Ubiquitin specific peptidase 1 / : / Ubiquitin specific protease (USP) domain signature 2. / Ubiquitin specific protease (USP) domain signature 1. / Ubiquitin specific protease, conserved site / Peptidase C19, ubiquitin carboxyl-terminal hydrolase / Ubiquitin carboxyl-terminal hydrolase / Ubiquitin specific protease domain / Ubiquitin specific protease (USP) domain profile. / Papain-like cysteine peptidase superfamily ...Ubiquitin specific peptidase 1 / : / Ubiquitin specific protease (USP) domain signature 2. / Ubiquitin specific protease (USP) domain signature 1. / Ubiquitin specific protease, conserved site / Peptidase C19, ubiquitin carboxyl-terminal hydrolase / Ubiquitin carboxyl-terminal hydrolase / Ubiquitin specific protease domain / Ubiquitin specific protease (USP) domain profile. / Papain-like cysteine peptidase superfamily / : / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily
Similarity search - Domain/homology
: / Ubiquitin carboxyl-terminal hydrolase 1 / Polyubiquitin-C
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsRennie, M.L. / Gundogdu, M. / Walden, H.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MR/W025256/1 United Kingdom
CitationJournal: J Med Chem / Year: 2024
Title: Structural and Biochemical Insights into the Mechanism of Action of the Clinical USP1 Inhibitor, KSQ-4279.
Authors: Martin Luke Rennie / Mehmet Gundogdu / Connor Arkinson / Steven Liness / Sheelagh Frame / Helen Walden /
Abstract: DNA damage triggers cell signaling cascades that mediate repair. This signaling is frequently dysregulated in cancers. The proteins that mediate this signaling are potential targets for therapeutic ...DNA damage triggers cell signaling cascades that mediate repair. This signaling is frequently dysregulated in cancers. The proteins that mediate this signaling are potential targets for therapeutic intervention. Ubiquitin-specific protease 1 (USP1) is one such target, with small-molecule inhibitors already in clinical trials. Here, we use biochemical assays and cryo-electron microscopy (cryo-EM) to study the clinical USP1 inhibitor, KSQ-4279 (RO7623066), and compare this to the well-established tool compound, ML323. We find that KSQ-4279 binds to the same cryptic site of USP1 as ML323 but disrupts the protein structure in subtly different ways. Inhibitor binding drives a substantial increase in thermal stability of USP1, which may be mediated through the inhibitors filling a hydrophobic tunnel-like pocket in USP1. Our results contribute to the understanding of the mechanism of action of USP1 inhibitors at the molecular level.
History
DepositionMay 15, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Sep 4, 2024Provider: repository / Type: Initial release
Revision 1.1Sep 25, 2024Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
D: Ubiquitin carboxyl-terminal hydrolase 1
C: Polyubiquitin-C
hetero molecules


Theoretical massNumber of molelcules
Total (without water)97,8654
Polymers97,2652
Non-polymers6002
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 carboxyl-terminal hydrolase 1 / Deubiquitinating enzyme 1 / hUBP / Ubiquitin thioesterase 1 / Ubiquitin-specific-processing protease 1


Mass: 88390.273 Da / Num. of mol.: 1 / Mutation: C90S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: USP1 / Cell line (production host): Sf21 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: O94782, ubiquitinyl hydrolase 1
#2: Protein Polyubiquitin-C


Mass: 8875.125 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBC / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P0CG48
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#4: Chemical ChemComp-A1IB8 / 6-(4-cyclopropyl-6-methoxy-pyrimidin-5-yl)-1-[[4-[1-propan-2-yl-4-(trifluoromethyl)imidazol-2-yl]phenyl]methyl]pyrazolo[3,4-d]pyrimidine


Mass: 534.536 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C27H25F3N8O / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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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: USP1 BOUND TO KSQ-4279 AND UBIQUITIN CONJUGATED TO FANCD2
Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
119 mMTrisC4H11NO31
2140 mMNaClNaCl1
31.9 mMDTTC4H10O2S21
40.9 %DMSOC2H6OS1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: 9.6 uM USP1-UAF1, 1.9 uM FANCI-FANCD2Ub, 2.3 uM dsDNA, 18.8 uM ML323
Specimen supportGrid mesh size: 300 divisions/in. / Grid type: UltrAuFoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 288 K

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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 magnification: 105000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARCparticle selection
2Topazparticle selection
5cryoSPARCCTF correction
8Cootmodel fitting
9ISOLDEmodel fitting
11cryoSPARCinitial Euler assignment
12cryoSPARCfinal Euler assignment
13cryoSPARCclassification
14cryoSPARC3D reconstruction
15PHENIX1.2model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 89396 / Algorithm: BACK PROJECTION / Num. of class averages: 2 / Symmetry type: POINT
Atomic model buildingB value: 97.9 / Space: REAL
Atomic model buildingPDB-ID: 7ZH4

7zh4


Accession code: 7ZH4 / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0033115
ELECTRON MICROSCOPYf_angle_d0.5414205
ELECTRON MICROSCOPYf_dihedral_angle_d4.186435
ELECTRON MICROSCOPYf_chiral_restr0.037485
ELECTRON MICROSCOPYf_plane_restr0.004538

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