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- EMDB-23609: PRMT5 bound to covalent PBM-site inhibitor BRD-6988 -

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Basic information

Entry
Database: EMDB / ID: EMD-23609
TitlePRMT5 bound to covalent PBM-site inhibitor BRD-6988
Map dataMap autosharpened by Phenix
Sample
  • Complex: Hetero-octamer complex of PRMT5 and WDR77
    • Protein or peptide: Protein arginine N-methyltransferase 5
    • Protein or peptide: Methylosome protein 50
  • Ligand: 2-(5-chloro-6-oxopyridazin-1(6H)-yl)-N-(4-methyl-3-{[2-(pyridin-2-yl)ethyl]sulfamoyl}phenyl)acetamide
Keywordsmethyltransferase / 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 / Protein arginine N-methyltransferase / SAM-dependent methyltransferase PRMT-type domain profile. ...: / 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 / Protein arginine N-methyltransferase / SAM-dependent methyltransferase PRMT-type domain profile. / 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
Similarity search - Domain/homology
Protein arginine N-methyltransferase 5 / Methylosome protein WDR77
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.39 Å
AuthorsMcMillan BJ / McKinney DC
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 KM / McMillan BJ / Sellers WR
History
DepositionMar 10, 2021-
Header (metadata) releaseMar 17, 2021-
Map releaseMar 17, 2021-
UpdateNov 6, 2024-
Current statusNov 6, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 5
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 5
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7m05
  • Surface level: 5
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7m05
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_23609.png

Downloads & links

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Map

FileDownload / File: emd_23609.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationMap autosharpened by Phenix
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesX (Sec.)Y (Row.)Z (Col.)
1.08 Å/pix.
x 320 pix.
= 345.6 Å		1.08 Å/pix.
x 320 pix.
= 345.6 Å		1.08 Å/pix.
x 320 pix.
= 345.6 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.08 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 5.0 / Movie #1: 5
Minimum - Maximum-16.238507999999999 - 36.189720000000001
Average (Standard dev.)0.00000000000316 (±1.0)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderZYX
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 345.6 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.081.081.08
M x/y/z320320320
origin x/y/z0.0000.0000.000
length x/y/z345.600345.600345.600
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ320320320
MAP C/R/S321
start NC/NR/NS000
NC/NR/NS320320320
D min/max/mean-16.23936.1900.000

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Supplemental data

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Mask #1

Fileemd_23609_msk_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: cisTEM half-map 2

Fileemd_23609_half_map_1.map
AnnotationcisTEM half-map 2
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: cisTEM half-map 1

Fileemd_23609_half_map_2.map
AnnotationcisTEM half-map 1
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Hetero-octamer complex of PRMT5 and WDR77

EntireName: Hetero-octamer complex of PRMT5 and WDR77
Components
  • Complex: Hetero-octamer complex of PRMT5 and WDR77
    • Protein or peptide: Protein arginine N-methyltransferase 5
    • Protein or peptide: Methylosome protein 50
  • Ligand: 2-(5-chloro-6-oxopyridazin-1(6H)-yl)-N-(4-methyl-3-{[2-(pyridin-2-yl)ethyl]sulfamoyl}phenyl)acetamide

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Supramolecule #1: Hetero-octamer complex of PRMT5 and WDR77

SupramoleculeName: Hetero-octamer complex of PRMT5 and WDR77 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 437 KDa

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Macromolecule #1: Protein arginine N-methyltransferase 5

MacromoleculeName: Protein arginine N-methyltransferase 5 / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO / EC number: type II protein arginine methyltransferase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 72.766664 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MAAMAVGGAG GSRVSSGRDL NCVPEIADTL GAVAKQGFDF LCMPVFHPRF KREFIQEPAK NRPGPQTRSD LLLSGRDWNT LIVGKLSPW IRPDSKVEKI RRNSEAAMLQ ELNFGAYLGL PAFLLPLNQE DNTNLARVLT NHIHTGHHSS MFWMRVPLVA P EDLRDDII ...String:
MAAMAVGGAG GSRVSSGRDL NCVPEIADTL GAVAKQGFDF LCMPVFHPRF KREFIQEPAK NRPGPQTRSD LLLSGRDWNT LIVGKLSPW IRPDSKVEKI RRNSEAAMLQ ELNFGAYLGL PAFLLPLNQE DNTNLARVLT NHIHTGHHSS MFWMRVPLVA P EDLRDDII ENAPTTHTEE YSGEEKTWMW WHNFRTLCDY SKRIAVALEI GADLPSNHVI DRWLGEPIKA AILPTSIFLT NK KGFPVLS KMHQRLIFRL LKLEVQFIIT GTNHHSEKEF CSYLQYLEYL SQNRPPPNAY ELFAKGYEDY LQSPLQPLMD NLE SQTYEV FEKDPIKYSQ YQQAIYKCLL DRVPEEEKDT NVQVLMVLGA GRGPLVNASL RAAKQADRRI KLYAVEKNPN AVVT LENWQ FEEWGSQVTV VSSDMREWVA PEKADIIVSE LLGSFADNEL SPECLDGAQH FLKDDGVSIP GEYTSFLAPI SSSKL YNEV RACREKDRDP EAQFEMPYVV RLHNFHQLSA PQPCFTFSHP NRDPMIDNNR YCTLEFPVEV NTVLHGFAGY FETVLY QDI TLSIRPETHS PGMFSWFPIL FPIKQPITVR EGQTICVRFW RCSNSKKVWY EWAVTAPVCS AIHNPTGRSY TIGL

UniProtKB: Protein arginine N-methyltransferase 5

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Macromolecule #2: Methylosome protein 50

MacromoleculeName: Methylosome protein 50 / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 36.723164 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: PRKETPPPLV PPAAREWNLP PNAPACMERQ LEAARYRSDG ALLLGASSLS GRCWAGSLWL FKDPCAAPNE GFCSAGVQTE AGVADLTWV GERGILVASD SGAVELWELD ENETLIVSKF CKYEHDDIVS TVSVLSSGTQ AVSGSKDICI KVWDLAQQVV L SSYRAHAA ...String:
PRKETPPPLV PPAAREWNLP PNAPACMERQ LEAARYRSDG ALLLGASSLS GRCWAGSLWL FKDPCAAPNE GFCSAGVQTE AGVADLTWV GERGILVASD SGAVELWELD ENETLIVSKF CKYEHDDIVS TVSVLSSGTQ AVSGSKDICI KVWDLAQQVV L SSYRAHAA QVTCVAASPH KDSVFLSCSE DNRILLWDTR CPKPASQIGC SAPGYLPTSL AWHPQQSEVF VFGDENGTVS LV DTKSTSC VLSSAVHSQC VTGLVFSPHS VPFLASLSED CSLAVLDSSL SELFRSQAHR DFVRDATWSP LNHSLLTTVG WDH QVVHHV VPTEPLPAPG PASVTE

UniProtKB: Methylosome protein WDR77

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Macromolecule #3: 2-(5-chloro-6-oxopyridazin-1(6H)-yl)-N-(4-methyl-3-{[2-(pyridin-2...

MacromoleculeName: 2-(5-chloro-6-oxopyridazin-1(6H)-yl)-N-(4-methyl-3-{[2-(pyridin-2-yl)ethyl]sulfamoyl}phenyl)acetamide
type: ligand / ID: 3 / Number of copies: 4 / Formula: YJG
Molecular weightTheoretical: 461.922 Da
Chemical component information

ChemComp-YJG:
2-(5-chloro-6-oxopyridazin-1(6H)-yl)-N-(4-methyl-3-{[2-(pyridin-2-yl)ethyl]sulfamoyl}phenyl)acetamide

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration1.42 mg/mL
BufferpH: 7.4
Component:
ConcentrationNameFormula
10.0 mMHEPES
150.0 mMsodium chlorideNaCl
1.0 mMTCEP
50.0 nMJNJ-64619178
GridModel: UltrAuFoil / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec.
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Name: GIF Quantum LS / Energy filter - Slit width: 30 eV
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Dimensions - Width: 3838 pixel / Digitization - Dimensions - Height: 3710 pixel / Digitization - Frames/image: 4-40 / Number grids imaged: 1 / Number real images: 2169 / Average exposure time: 8.0 sec. / Average electron dose: 62.4 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsCalibrated magnification: 46296 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.1 µm / Nominal defocus min: 1.4000000000000001 µm / Nominal magnification: 130000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 956646
Startup modelType of model: EMDB MAP
EMDB ID:

7137

Final reconstructionNumber classes used: 22 / Applied symmetry - Point group: D2 (2x2 fold dihedral) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 2.39 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cisTEM (ver. 1.00) / Number images used: 443624
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cisTEM (ver. 1.00)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cisTEM (ver. 1.00)
Final 3D classificationNumber classes: 22 / Avg.num./class: 20164 / Software - Name: cisTEM (ver. 1.00)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

6v0p


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-7m05:
CryoEM structure of PRMT5 bound to covalent PBM-site inhibitor BRD-6988

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