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- PDB-7m05: CryoEM structure of PRMT5 bound to covalent PBM-site inhibitor BR... -

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Basic information

Entry
Database: PDB / ID: 7m05
TitleCryoEM structure of PRMT5 bound to covalent PBM-site inhibitor BRD-6988
Components
  • Methylosome protein 50
  • Protein arginine N-methyltransferase 5
KeywordsTRANSFERASE/INHIBITOR / methyltransferase / splicing / epigenetic / TRANSFERASE-INHIBITOR complex
Function / homology
Function and homology information


positive regulation of adenylate cyclase-inhibiting dopamine receptor signaling pathway / peptidyl-arginine N-methylation / oocyte axis specification / type II protein arginine methyltransferase / protein-arginine omega-N symmetric methyltransferase activity / peptidyl-arginine methylation / Golgi ribbon formation / negative regulation of epithelial cell proliferation involved in prostate gland development / secretory columnal luminar epithelial cell differentiation involved in prostate glandular acinus development / histone arginine N-methyltransferase activity ...positive regulation of adenylate cyclase-inhibiting dopamine receptor signaling pathway / peptidyl-arginine N-methylation / oocyte axis specification / type II protein arginine methyltransferase / protein-arginine omega-N symmetric methyltransferase activity / peptidyl-arginine methylation / Golgi ribbon formation / negative regulation of epithelial cell proliferation involved in prostate gland development / secretory columnal luminar epithelial cell differentiation involved in prostate glandular acinus development / histone arginine N-methyltransferase activity / epithelial cell proliferation involved in prostate gland development / histone H3R17 methyltransferase activity / histone H3R2 methyltransferase activity / histone H3R8 methyltransferase activity / histone H3R26 methyltransferase activity / histone H3K37 methyltransferase activity / histone H4R3 methyltransferase activity / histone H4K12 methyltransferase activity / histone H3K56 methyltransferase activity / protein-arginine N-methyltransferase activity / methylosome / positive regulation of mRNA splicing, via spliceosome / methyl-CpG binding / histone H2AQ104 methyltransferase activity / endothelial cell activation / histone H3 methyltransferase activity / regulation of mitotic nuclear division / histone methyltransferase complex / Cul4B-RING E3 ubiquitin ligase complex / negative regulation of gene expression via chromosomal CpG island methylation / histone methyltransferase activity / E-box binding / positive regulation of oligodendrocyte differentiation / negative regulation of cell differentiation / ubiquitin-like ligase-substrate adaptor activity / spliceosomal snRNP assembly / ribonucleoprotein complex binding / regulation of ERK1 and ERK2 cascade / liver regeneration / regulation of signal transduction by p53 class mediator / methyltransferase activity / circadian regulation of gene expression / DNA-templated transcription termination / Regulation of TP53 Activity through Methylation / RMTs methylate histone arginines / protein polyubiquitination / transcription corepressor activity / p53 binding / snRNP Assembly / ubiquitin-dependent protein catabolic process / transcription coactivator activity / chromatin remodeling / protein heterodimerization activity / positive regulation of cell population proliferation / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / chromatin / Golgi apparatus / nucleoplasm / identical protein binding / nucleus / cytosol / cytoplasm
Similarity search - Function
: / Protein arginine N-methyltransferase PRMT5 / PRMT5, TIM barrel domain / PRMT5, oligomerisation domain / PRMT5 TIM barrel domain / PRMT5 oligomerisation domain / PRMT5 arginine-N-methyltransferase / PRMT5 arginine-N-methyltransferase / Hnrnp arginine n-methyltransferase1 / Hnrnp arginine n-methyltransferase1 ...: / Protein arginine N-methyltransferase PRMT5 / PRMT5, TIM barrel domain / PRMT5, oligomerisation domain / PRMT5 TIM barrel domain / PRMT5 oligomerisation domain / PRMT5 arginine-N-methyltransferase / PRMT5 arginine-N-methyltransferase / Hnrnp arginine n-methyltransferase1 / Hnrnp arginine n-methyltransferase1 / Protein arginine N-methyltransferase / SAM-dependent methyltransferase PRMT-type domain profile. / Divalent-metal-dependent TIM barrel enzymes / Vaccinia Virus protein VP39 / Distorted Sandwich / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / S-adenosyl-L-methionine-dependent methyltransferase superfamily / WD40/YVTN repeat-like-containing domain superfamily / TIM Barrel / Alpha-Beta Barrel / Rossmann fold / 3-Layer(aba) Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Chem-YJG / Protein arginine N-methyltransferase 5 / Methylosome protein WDR77
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.39 Å
AuthorsMcMillan, B.J. / McKinney, D.C. / Timm, D.E.
Citation
Journal: J Med Chem / Year: 2021
Title: Discovery of a First-in-Class Inhibitor of the PRMT5-Substrate Adaptor Interaction.
Authors: David C McKinney / Brian J McMillan / Matthew J Ranaghan / Jamie A Moroco / Merissa Brousseau / Zachary Mullin-Bernstein / Meghan O'Keefe / Patrick McCarren / Michael F Mesleh / Kathleen M ...Authors: David C McKinney / Brian J McMillan / Matthew J Ranaghan / Jamie A Moroco / Merissa Brousseau / Zachary Mullin-Bernstein / Meghan O'Keefe / Patrick McCarren / Michael F Mesleh / Kathleen M Mulvaney / Foxy Robinson / Ritu Singh / Besnik Bajrami / Florence F Wagner / Robert Hilgraf / Martin J Drysdale / Arthur J Campbell / Adam Skepner / David E Timm / Dale Porter / Virendar K Kaushik / William R Sellers / Alessandra Ianari /
Abstract: PRMT5 and its substrate adaptor proteins (SAPs), pICln and Riok1, are synthetic lethal dependencies in MTAP-deleted cancer cells. SAPs share a conserved PRMT5 binding motif (PBM) which mediates ...PRMT5 and its substrate adaptor proteins (SAPs), pICln and Riok1, are synthetic lethal dependencies in MTAP-deleted cancer cells. SAPs share a conserved PRMT5 binding motif (PBM) which mediates binding to a surface of PRMT5 distal to the catalytic site. This interaction is required for methylation of several PRMT5 substrates, including histone and spliceosome complexes. We screened for small molecule inhibitors of the PRMT5-PBM interaction and validated a compound series which binds to the PRMT5-PBM interface and directly inhibits binding of SAPs. Mode of action studies revealed the formation of a covalent bond between a halogenated pyridazinone group and cysteine 278 of PRMT5. Optimization of the starting hit produced a lead compound, BRD0639, which engages the target in cells, disrupts PRMT5-RIOK1 complexes, and reduces substrate methylation. BRD0639 is a first-in-class PBM-competitive inhibitor that can support studies of PBM-dependent PRMT5 activities and the development of novel PRMT5 inhibitors that selectively target these functions.
#1: Journal: bioRxiv / Year: 2020
Title: Discovery of a first-in-class inhibitor of the PRMT5-substrate adaptor interaction
Authors: Mulvaney, K.M. / McMillan, B.J. / Sellers, W.R.
History
DepositionMar 10, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 17, 2021Provider: repository / Type: Initial release
Revision 1.1Aug 25, 2021Group: Database references / Category: citation / citation_author / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.2Nov 6, 2024Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / em_3d_fitting_list / em_admin / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature
Item: _citation.journal_id_ISSN / _em_3d_fitting_list.accession_code ..._citation.journal_id_ISSN / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
A: Protein arginine N-methyltransferase 5
B: Methylosome protein 50
C: Protein arginine N-methyltransferase 5
D: Methylosome protein 50
E: Protein arginine N-methyltransferase 5
F: Methylosome protein 50
G: Protein arginine N-methyltransferase 5
H: Methylosome protein 50
hetero molecules


Theoretical massNumber of molelcules
Total (without water)439,80712
Polymers437,9598
Non-polymers1,8484
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: equilibrium centrifugation
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
Protein arginine N-methyltransferase 5 / 72 kDa ICln-binding protein / Histone-arginine N-methyltransferase PRMT5 / Jak-binding protein 1 / ...72 kDa ICln-binding protein / Histone-arginine N-methyltransferase PRMT5 / Jak-binding protein 1 / Shk1 kinase-binding protein 1 homolog / SKB1Hs


Mass: 72766.664 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PRMT5, HRMT1L5, IBP72, JBP1, SKB1 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: O14744, type II protein arginine methyltransferase
#2: Protein
Methylosome protein 50 / MEP-50 / Androgen receptor cofactor p44 / WD repeat-containing protein 77 / p44/Mep50


Mass: 36723.164 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: WDR77, MEP50, WD45, HKMT1069, Nbla10071 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q9BQA1
#3: Chemical
ChemComp-YJG / 2-(5-chloro-6-oxopyridazin-1(6H)-yl)-N-(4-methyl-3-{[2-(pyridin-2-yl)ethyl]sulfamoyl}phenyl)acetamide


Mass: 461.922 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C20H20ClN5O4S / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationY

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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: Hetero-octamer complex of PRMT5 and WDR77 / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Molecular weightValue: 0.437 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
Buffer component
IDConc.NameFormulaBuffer-ID
110 mMHEPES1
2150 mMsodium chlorideNaCl1
31 mMTCEP1
450 nMJNJ-646191781
SpecimenConc.: 1.42 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: UltrAuFoil
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Calibrated magnification: 46296 X / Nominal defocus max: 2100 nm / Nominal defocus min: 1400 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 8 sec. / Electron dose: 62.4 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2169
EM imaging opticsEnergyfilter name: GIF Quantum LS / Energyfilter slit width: 30 eV
Image scansSampling size: 5 µm / Width: 3838 / Height: 3710 / Movie frames/image: 40 / Used frames/image: 4-40

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Processing

SoftwareName: PHENIX / Version: 1.16_3549: / Classification: refinement
EM software
IDNameVersionCategory
1cisTEM1particle selection
2EPU2.4.0.47RELimage acquisition
4cisTEM1CTF correction
7PHENIX1.16-3549model fitting
9PHENIX1.16-3549model refinement
10cisTEM1initial Euler assignment
11cisTEM1final Euler assignment
12cisTEM1classification
13cisTEM13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 956646
SymmetryPoint symmetry: D2 (2x2 fold dihedral)
3D reconstructionResolution: 2.39 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 443624 / Algorithm: FOURIER SPACE / Num. of class averages: 22 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model buildingPDB-ID: 6V0P

6v0p


Accession code: 6V0P / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0158040
ELECTRON MICROSCOPYf_angle_d0.843104804
ELECTRON MICROSCOPYf_dihedral_angle_d10.82923452
ELECTRON MICROSCOPYf_chiral_restr0.0584448
ELECTRON MICROSCOPYf_plane_restr0.0058652

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