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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 50WD repeat-containing protein 77
  • Ligand: 2-(5-chloro-6-oxopyridazin-1(6H)-yl)-N-(4-methyl-3-{[2-(pyridin-2-yl)ethyl]sulfamoyl}phenyl)acetamide
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 / histone H4R3 methyltransferase activity / secretory columnal luminar epithelial cell differentiation involved in prostate glandular acinus development ...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 / histone H4R3 methyltransferase activity / secretory columnal luminar epithelial cell differentiation involved in prostate glandular acinus development / epithelial cell proliferation involved in prostate gland development / histone arginine N-methyltransferase activity / methylosome / protein-arginine N-methyltransferase activity / positive regulation of mRNA splicing, via spliceosome / methyl-CpG binding / : / endothelial cell activation / histone H3 methyltransferase activity / Cul4B-RING E3 ubiquitin ligase complex / histone methyltransferase complex / regulation of mitotic nuclear division / positive regulation of oligodendrocyte differentiation / histone methyltransferase activity / E-box binding / negative regulation of cell differentiation / ubiquitin-like ligase-substrate adaptor activity / spliceosomal snRNP assembly / ribonucleoprotein complex binding / regulation of ERK1 and ERK2 cascade / nuclear receptor coactivator activity / regulation of signal transduction by p53 class mediator / liver regeneration / methyltransferase activity / DNA-templated transcription termination / circadian regulation of gene expression / Regulation of TP53 Activity through Methylation / RMTs methylate histone arginines / protein polyubiquitination / transcription corepressor activity / p53 binding / snRNP Assembly / ubiquitin-dependent protein catabolic process / chromatin remodeling / protein heterodimerization activity / positive regulation of cell population proliferation / chromatin / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / Golgi apparatus / nucleoplasm / identical protein binding / nucleus / cytosol / cytoplasm
Similarity search - Function
Protein arginine N-methyltransferase PRMT5 / PRMT5 arginine-N-methyltransferase / PRMT5, TIM barrel domain / PRMT5, oligomerisation domain / PRMT5 arginine-N-methyltransferase / PRMT5 TIM barrel domain / PRMT5 oligomerisation domain / Protein arginine N-methyltransferase / SAM-dependent methyltransferase PRMT-type domain profile. / WD40 repeat, conserved site ...Protein arginine N-methyltransferase PRMT5 / PRMT5 arginine-N-methyltransferase / PRMT5, TIM barrel domain / PRMT5, oligomerisation domain / PRMT5 arginine-N-methyltransferase / PRMT5 TIM barrel domain / PRMT5 oligomerisation domain / 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 / WD40 repeats / WD40 repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / S-adenosyl-L-methionine-dependent methyltransferase 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 / Timm DE
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-
UpdateAug 25, 2021-
Current statusAug 25, 2021Processing 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
Voxel sizeX=Y=Z: 1.08 Å
Density
Contour LevelBy AUTHOR: 5.0 / Movie #1: 5
Minimum - Maximum-16.238508 - 36.18972
Average (Standard dev.)3.1597969e-12 (±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

Projections

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

Projections

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

Projections

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 50WD repeat-containing protein 77
  • 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)
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
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

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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

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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 chlorideNaClSodium chloride
1.0 mMTCEP
50.0 nMJNJ-64619178
GridModel: UltrAuFoil / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE
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
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsCalibrated magnification: 46296 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 2.1 µm / Nominal defocus min: 1.4000000000000001 µm / Nominal magnification: 130000
Specialist opticsEnergy filter - Name: GIF Quantum LS / Energy filter - Slit width: 30 eV
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
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 - Sampling interval: 5.0 µm / 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
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 956646
CTF correctionSoftware - Name: cisTEM (ver. 1.00)
Startup modelType of model: EMDB MAP
EMDB ID:

7137

Initial 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)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cisTEM (ver. 1.00)
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
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

6v0p

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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