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- PDB-9q03: Cryo-EM structure of ternary complex BCL6-CRBN-DDB1 with BCL6-760... -
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Open data
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Basic information
Entry | Database: PDB / ID: 9q03 | ||||||
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Title | Cryo-EM structure of ternary complex BCL6-CRBN-DDB1 with BCL6-760 (LDD, local refined) | ||||||
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![]() | LIGASE / Cereblon / BCL6 / LDD / degrader / E3 | ||||||
Function / homology | ![]() negative regulation of monoatomic ion transmembrane transport / regulation of memory T cell differentiation / negative regulation of mitotic cell cycle DNA replication / intronic transcription regulatory region sequence-specific DNA binding / negative regulation of isotype switching to IgE isotypes / negative regulation of plasma cell differentiation / negative regulation of T-helper 2 cell differentiation / isotype switching to IgE isotypes / negative regulation of mast cell cytokine production / regulation of germinal center formation ...negative regulation of monoatomic ion transmembrane transport / regulation of memory T cell differentiation / negative regulation of mitotic cell cycle DNA replication / intronic transcription regulatory region sequence-specific DNA binding / negative regulation of isotype switching to IgE isotypes / negative regulation of plasma cell differentiation / negative regulation of T-helper 2 cell differentiation / isotype switching to IgE isotypes / negative regulation of mast cell cytokine production / regulation of germinal center formation / negative regulation of mononuclear cell proliferation / plasma cell differentiation / paraspeckles / germinal center formation / regulation of immune system process / pyramidal neuron differentiation / type 2 immune response / T-helper 2 cell differentiation / positive regulation of regulatory T cell differentiation / positive regulation of cell motility / negative regulation of B cell apoptotic process / Cul4A-RING E3 ubiquitin ligase complex / negative regulation of Rho protein signal transduction / erythrocyte development / FOXO-mediated transcription of cell death genes / locomotory exploration behavior / regulation of cell differentiation / TP53 regulates transcription of several additional cell death genes whose specific roles in p53-dependent apoptosis remain uncertain / regulation of T cell proliferation / B cell proliferation / negative regulation of cellular senescence / negative regulation of cell-matrix adhesion / negative regulation of Notch signaling pathway / positive regulation of Wnt signaling pathway / regulation of immune response / negative regulation of protein-containing complex assembly / Rho protein signal transduction / positive regulation of B cell proliferation / positive regulation of neuron differentiation / regulation of cytokine production / cell-matrix adhesion / transcription corepressor binding / positive regulation of protein-containing complex assembly / cell motility / negative regulation of cell growth / chromatin DNA binding / DNA-binding transcription repressor activity, RNA polymerase II-specific / cell morphogenesis / sequence-specific double-stranded DNA binding / intracellular protein localization / heterochromatin formation / regulation of cell population proliferation / actin cytoskeleton organization / regulation of inflammatory response / Interleukin-4 and Interleukin-13 signaling / spermatogenesis / DNA-binding transcription factor binding / sequence-specific DNA binding / Potential therapeutics for SARS / proteasome-mediated ubiquitin-dependent protein catabolic process / transmembrane transporter binding / transcription by RNA polymerase II / protein ubiquitination / positive regulation of apoptotic process / RNA polymerase II cis-regulatory region sequence-specific DNA binding / inflammatory response / DNA-binding transcription factor activity / negative regulation of DNA-templated transcription / DNA damage response / chromatin binding / nucleolus / perinuclear region of cytoplasm / negative regulation of transcription by RNA polymerase II / Golgi apparatus / zinc ion binding / nucleoplasm / metal ion binding / identical protein binding / nucleus / membrane / cytoplasm / cytosol Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.15 Å | ||||||
![]() | Zhu, J. / Fang, W. / Pagarigan, B. | ||||||
Funding support | 1items
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![]() | ![]() Title: Discovery of Potent and Selective BCL6 Ligand-Directed Degrader (LDD), BCL6-760. Authors: Hunter P Shunatona / Natalie Holmberg Douglas / Jayce Rhodes / William Thomas / Diogo Da Silva / Jim Gamez / Matt Groza / Andy Christoforou / Jinyi Zhu / Scott Johnson / Dharmpal Dodd / ...Authors: Hunter P Shunatona / Natalie Holmberg Douglas / Jayce Rhodes / William Thomas / Diogo Da Silva / Jim Gamez / Matt Groza / Andy Christoforou / Jinyi Zhu / Scott Johnson / Dharmpal Dodd / Dehua Huang / Jennifer Griffin / Giulianna Miseo / Brandon Whitefield / Dahlia Weiss / James Rader / Elif Kuzu / Jim Leisten / Joselyn Del Rosario / Lihong Shi / Mary Matyskiela / Philip P Chamberlain / Peter Belmont / Matt Alexander / Christoph W Zapf / Lynda Groocock / Deborah S Mortensen / ![]() Abstract: The discovery of a potent and selective BCL6 ligand-directed degrader (LDD), BCL6-760 () is described. Through structure-activity relationships, the most potent heterobifunctional degraders of BCL6 ...The discovery of a potent and selective BCL6 ligand-directed degrader (LDD), BCL6-760 () is described. Through structure-activity relationships, the most potent heterobifunctional degraders of BCL6 were found to be those containing short aminopiperidine linkers in combination with an indazole-based cereblon (CRBN)-binding moiety (CBM). In vitro ADME profiling of potent molecules identified BCL6-760 as an ideal molecule for use in in vivo experiments due to its good passive permeability, solubility, and microsomal stability. Mechanistic studies confirmed that BCL6 degradation is CRBN mediated, and proteomic assessment indicates a clean and selective degradation profile. BCL6-760 exhibited good oral mouse PK and was capable of penetrant and sustained PD effects. At 60 mg/kg BID dosing, BCL6-760 achieves >90% BCL6 reduction and leads to an overall 64% tumor volume reduction in an OCI-LY-1 mouse xenograft efficacy model. | ||||||
History |
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Remark 650 | HELIX DETERMINATION METHOD: MOE | ||||||
Remark 700 | SHEET DETERMINATION METHOD: MOE |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 234.4 KB | Display | ![]() |
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PDB format | ![]() | 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 | ![]() | 31.8 KB | Display | |
Data in CIF | ![]() | 46.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 72086MC M: map data used to model this data C: citing same article ( |
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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
#1: Protein | Mass: 16431.863 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | | Mass: 53581.984 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #3: Chemical | ChemComp-ZN / | #4: Chemical | ChemComp-A1CM7 / ( | Mass: 715.244 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C36H43ClN10O4 / Feature type: SUBJECT OF INVESTIGATION Has ligand of interest | Y | Has protein modification | N | Nonpolymer details | LIG DICTIONARY 94 100 Other LIG C1 C1 C 0 YNN 1 LIG C10 C10 C 0 YNN 2 LIG C11 C11 C 0 YNN 3 LIG C12 ...LIG DICTIONARY | |
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-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: ternary complex of BCL6-CRBN-DDB1 with an LDD BCL6-760 Type: COMPLEX Details: BCL6 BTB domain and CRBN/DDB1 was mixed with BCL6-760 in 1:1:1 ratio Entity ID: #1-#2 / Source: RECOMBINANT | ||||||||||||||||||||||||||||||
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Molecular weight | Value: 0.162 MDa / Experimental value: NO | ||||||||||||||||||||||||||||||
Source (natural) | Organism: ![]() | ||||||||||||||||||||||||||||||
Source (recombinant) | Organism: ![]() ![]() | ||||||||||||||||||||||||||||||
Buffer solution | pH: 7 | ||||||||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||
Specimen support | Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||||||||
Vitrification | Instrument: 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 |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 1800 nm / Nominal defocus min: 1200 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 3.16 sec. / Electron dose: 35.18 e/Å2 / Film or detector model: TFS FALCON 4i (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 10236 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 15859703 | |||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.15 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 112568 / Algorithm: FOURIER SPACE / Num. of class averages: 1 / Symmetry type: POINT | |||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | |||||||||||||||||||||||||||
Atomic model building |
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Refinement | Highest resolution: 3.15 Å |