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- PDB-9dqd: cryo-EM structure of human Cereblon/DDB1 in complex with a non-tr... -

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Basic information

Entry
Database: PDB / ID: 9dqd
Titlecryo-EM structure of human Cereblon/DDB1 in complex with a non-traditional CRBN binder
Components
  • DNA damage-binding protein 1
  • Protein cereblon
KeywordsLIGASE / CRL4 / UBIQUITIN / E3 / CEREBLON
Function / homology
Function and homology information


negative regulation of monoatomic ion transmembrane transport / positive regulation by virus of viral protein levels in host cell / epigenetic programming in the zygotic pronuclei / spindle assembly involved in female meiosis / Cul4-RING E3 ubiquitin ligase complex / UV-damage excision repair / biological process involved in interaction with symbiont / regulation of mitotic cell cycle phase transition / WD40-repeat domain binding / Cul4A-RING E3 ubiquitin ligase complex ...negative regulation of monoatomic ion transmembrane transport / positive regulation by virus of viral protein levels in host cell / epigenetic programming in the zygotic pronuclei / spindle assembly involved in female meiosis / Cul4-RING E3 ubiquitin ligase complex / UV-damage excision repair / biological process involved in interaction with symbiont / regulation of mitotic cell cycle phase transition / WD40-repeat domain binding / Cul4A-RING E3 ubiquitin ligase complex / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / negative regulation of reproductive process / negative regulation of developmental process / locomotory exploration behavior / cullin family protein binding / viral release from host cell / positive regulation of Wnt signaling pathway / ectopic germ cell programmed cell death / negative regulation of protein-containing complex assembly / positive regulation of viral genome replication / proteasomal protein catabolic process / positive regulation of gluconeogenesis / nucleotide-excision repair / positive regulation of protein-containing complex assembly / Recognition of DNA damage by PCNA-containing replication complex / regulation of circadian rhythm / DNA Damage Recognition in GG-NER / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Wnt signaling pathway / Formation of Incision Complex in GG-NER / Dual incision in TC-NER / positive regulation of protein catabolic process / Gap-filling DNA repair synthesis and ligation in TC-NER / cellular response to UV / rhythmic process / site of double-strand break / Neddylation / ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / proteasome-mediated ubiquitin-dependent protein catabolic process / Potential therapeutics for SARS / transmembrane transporter binding / damaged DNA binding / chromosome, telomeric region / protein ubiquitination / DNA repair / apoptotic process / DNA damage response / protein-containing complex binding / negative regulation of apoptotic process / nucleolus / perinuclear region of cytoplasm / protein-containing complex / DNA binding / extracellular space / extracellular exosome / nucleoplasm / metal ion binding / nucleus / membrane / cytosol / cytoplasm
Similarity search - Function
Yippee/Mis18/Cereblon / Yippee zinc-binding/DNA-binding /Mis18, centromere assembly / CULT domain / CULT domain profile. / Lon N-terminal domain profile. / Lon protease, N-terminal domain / Lon protease, N-terminal domain superfamily / ATP-dependent protease La (LON) substrate-binding domain / Found in ATP-dependent protease La (LON) / RSE1/DDB1/CPSF1 second beta-propeller ...Yippee/Mis18/Cereblon / Yippee zinc-binding/DNA-binding /Mis18, centromere assembly / CULT domain / CULT domain profile. / Lon N-terminal domain profile. / Lon protease, N-terminal domain / Lon protease, N-terminal domain superfamily / ATP-dependent protease La (LON) substrate-binding domain / Found in ATP-dependent protease La (LON) / RSE1/DDB1/CPSF1 second beta-propeller / Cleavage/polyadenylation specificity factor, A subunit, C-terminal / Cleavage/polyadenylation specificity factor, A subunit, N-terminal / : / CPSF A subunit region / RSE1/DDB1/CPSF1 first beta-propeller / PUA-like superfamily / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
: / DNA damage-binding protein 1 / Protein cereblon
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsZhu, J. / Pagarigan, B.
Funding support1items
OrganizationGrant numberCountry
Other private
CitationJournal: ACS Med Chem Lett / Year: 2025
Title: Development of a Buchwald-Hartwig Amination for an Accelerated Library Synthesis of Cereblon Binders.
Authors: Anastasia Lejava / Giulianna A Miseo / Thomas Phan / Jinyi Zhu / Hannah L Powers / Jianqing Li / Deborah S Mortensen / Christoph W Zapf / Gody Khambatta / Jennifer Buenviaje / Natalie Holmberg-Douglas /
Abstract: In recent years, targeted protein degradation (TPD) has emerged as a powerful therapeutic modality utilizing both heterobifunctional ligand-directed degraders (LDDs) and molecular glues (e.g., ...In recent years, targeted protein degradation (TPD) has emerged as a powerful therapeutic modality utilizing both heterobifunctional ligand-directed degraders (LDDs) and molecular glues (e.g., CELMoDs) to recruit E3 ligases for inducing polyubiquitination and subsequent proteasomal degradation of target proteins. The immunomodulatory drugs lenalidomide and pomalidomide bind to cereblon (CRBN), a substrate receptor of the CRL4A E3 ligase complex, to initiate degradation of neosubstrates critical for cell survival. Recently, nonlenalidomide or pomalidomide CRBN binders, known as alternate glutarimides, have gained popularity, offering potential degraders with varying physicochemical properties. Specifically, 3-substituted indazole derivatives have emerged as potent CRBN binders. We developed conditions for the direct cross-coupling of unprotected glutarimides with amines, streamlining the synthesis of alternative CRBN binders. This manuscript describes the rapid synthesis of 30 CRBN binders, their characterization as potential degraders and a cryo-EM structure of the CRBN/DDB1 with a representative compound ().
History
DepositionSep 23, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 25, 2024Provider: repository / Type: Initial release
Revision 1.1Jan 29, 2025Group: Data collection / Database references / Category: citation / em_admin
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Protein cereblon
B: DNA damage-binding protein 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)147,3364
Polymers146,9292
Non-polymers4072
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Protein cereblon


Mass: 53581.984 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CRBN, AD-006 / Cell (production host): SF9 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q96SW2
#2: Protein DNA damage-binding protein 1 / DDB p127 subunit / DNA damage-binding protein a / DDBa / Damage-specific DNA-binding protein 1 / ...DDB p127 subunit / DNA damage-binding protein a / DDBa / Damage-specific DNA-binding protein 1 / HBV X-associated protein 1 / XAP-1 / UV-damaged DNA-binding factor / UV-damaged DNA-binding protein 1 / UV-DDB 1 / XPE-binding factor / XPE-BF / Xeroderma pigmentosum group E-complementing protein / XPCe


Mass: 93347.078 Da / Num. of mol.: 1 / Mutation: deletion of residues 396-705
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: DDB1, XAP1 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q16531
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#4: Chemical ChemComp-A1BEP / (3R)-3-{1-methyl-6-[(piperidin-4-yl)amino]-1H-indazol-3-yl}piperidine-2,6-dione


Mass: 341.408 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C18H23N5O2 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
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: CREBN-DDB1 plus a non-traditional CRBN binder / Type: COMPLEX
Details: co-expressed in sf9 cells. beta-propeller domain of DDB1 replaced by a linker.
Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7
Buffer component
IDConc.NameFormulaBuffer-ID
110 mM(2-(4-(2-hydroxyethyl)piperazin-1-yl)ethanesulfonic acid)HEPES1
2240 mMsodium chlorideNaCl1
32 mMtris(2-carboxyethyl)phosphineTCEP1
40.3 %Dimethyl sulfoxideDMSO1
50.001 %Lauryl Maltose Neopentyl GlycolLMNG1
SpecimenConc.: 3.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R0.6/1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 278 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: 75000 X / Nominal defocus max: 1400 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recording

Imaging-ID: 1 / Film or detector model: FEI FALCON IV (4k x 4k) / Num. of grids imaged: 1

IDAverage exposure time (sec.)Electron dose (e/Å2)Num. of real imagesDetails
13.0327.6711921
23.4939.28820030 degree tilt

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Processing

EM software
IDNameVersionCategory
1Warpparticle selection
2EPUimage acquisition
4CTFFIND3.1CTF correction
7Cootmodel fitting
10cryoSPARCfinal Euler assignment
11cryoSPARCclassification
12cryoSPARC3D reconstruction
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 7881094
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 81146 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model buildingPDB-ID: 8D81

8d81


Accession code: 8D81 / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0039571
ELECTRON MICROSCOPYf_angle_d0.44612957
ELECTRON MICROSCOPYf_dihedral_angle_d13.0533572
ELECTRON MICROSCOPYf_chiral_restr0.0411464
ELECTRON MICROSCOPYf_plane_restr0.0031662

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