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Basic information

Entry
Database: PDB / ID: 8cyi
TitleCryo-EM structures and computational analysis for enhanced potency in MTA-synergic inhibition of human protein arginine methyltransferase 5
Components
  • Methylosome protein 50
  • Protein arginine N-methyltransferase 5
KeywordsONCOPROTEIN/Transferase / PRMT5 / protein arginine methyl transferase / MTA-inhibitor synergy / cryo-EM structure-based drug design / computational analysis / catalytic mechanism / drug discovery / docking analysis / ONCOPROTEIN / ONCOPROTEIN-Transferase 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 / 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 / histone arginine N-methyltransferase activity / epithelial cell proliferation involved in prostate gland development / protein-arginine N-methyltransferase activity / methylosome / methyl-CpG binding / endothelial cell activation / histone H3 methyltransferase activity / positive regulation of mRNA splicing, via spliceosome / negative regulation of gene expression via chromosomal CpG island methylation / Cul4B-RING E3 ubiquitin ligase complex / regulation of mitotic nuclear division / histone methyltransferase complex / positive regulation of oligodendrocyte differentiation / histone methyltransferase activity / E-box binding / negative regulation of cell differentiation / ubiquitin-like ligase-substrate adaptor activity / ribonucleoprotein complex binding / spliceosomal snRNP assembly / regulation of ERK1 and ERK2 cascade / nuclear receptor coactivator activity / regulation of signal transduction by p53 class mediator / methyltransferase activity / liver regeneration / 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 / cytoplasm / cytosol
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. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily / S-adenosyl-L-methionine-dependent methyltransferase superfamily
Similarity search - Domain/homology
5'-DEOXY-5'-METHYLTHIOADENOSINE / Chem-P2R / Protein arginine N-methyltransferase 5 / Methylosome protein WDR77
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.14 Å
AuthorsYadav, G.P. / Wei, Z. / Xiaozhi, Y. / Chenglong, L. / Jiang, Q.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS) United States
CitationJournal: Commun Biol / Year: 2022
Title: Cryo-EM structure-based selection of computed ligand poses enables design of MTA-synergic PRMT5 inhibitors of better potency.
Authors: Wei Zhou / Gaya P Yadav / Xiaozhi Yang / Feng Qin / Chenglong Li / Qiu-Xing Jiang /
Abstract: Projected potential of 2.5-4.0 Å cryo-EM structures for structure-based drug design is not well realized yet. Here we show that a 3.1 Å structure of PRMT5 is suitable for selecting computed ...Projected potential of 2.5-4.0 Å cryo-EM structures for structure-based drug design is not well realized yet. Here we show that a 3.1 Å structure of PRMT5 is suitable for selecting computed poses of a chemical inhibitor and its analogs for enhanced potency. PRMT5, an oncogenic target for various cancer types, has many inhibitors manifesting little cooperativity with MTA, a co-factor analog accumulated in MTAP-/- cells. To achieve MTA-synergic inhibition, a pharmacophore from virtual screen leads to a specific inhibitor (11-2 F). Cryo-EM structures of 11-2 F / MTA-bound human PRMT5/MEP50 complex and its apo form resolved at 3.1 and 3.2 Å respectively show that 11-2 F in the catalytic pocket shifts the cofactor-binding pocket away by ~2.0 Å, contributing to positive cooperativity. Computational analysis predicts subtype specificity of 11-2 F among PRMTs. Structural analysis of ligands in the binding pockets is performed to compare poses of 11-2 F and its redesigned analogs and identifies three new analogs predicted to have significantly better potency. One of them, after synthesis, is ~4 fold more efficient in inhibiting PRMT5 catalysis than 11-2 F, with strong MTA-synergy. These data suggest the feasibility of employing near-atomic resolution cryo-EM structures and computational analysis of ligand poses for small molecule therapeutics.
History
DepositionMay 23, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 12, 2023Provider: repository / Type: Initial release
Revision 1.1Jun 12, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Protein arginine N-methyltransferase 5
B: Methylosome protein 50
hetero molecules


Theoretical massNumber of molelcules
Total (without water)106,7054
Polymers105,9932
Non-polymers7122
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration, 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.: 1
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: 33226.211 Da / Num. of mol.: 1
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-P2R / N-[(2-aminoquinolin-7-yl)methyl]-9-(2-hydroxyethyl)-2,3,4,9-tetrahydro-1H-carbazole-6-carboxamide


Mass: 414.500 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C25H26N4O2
#4: Chemical ChemComp-MTA / 5'-DEOXY-5'-METHYLTHIOADENOSINE


Mass: 297.334 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C11H15N5O3S
Has ligand of interestY

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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: Complex of PRMT5 and MEP50 in the presence of MTA and a novel inhibitor (11-2F)
Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Molecular weightValue: .440 MDa / Experimental value: YES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenConc.: 0.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: Preclean plasma cleaner / Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/2
VitrificationInstrument: FEI VITROBOT MARK III / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 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: OTHER
Electron lensMode: DARK FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 40 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of real images: 4115

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Processing

EM software
IDNameVersionCategory
1cisTEM1.0.0 betaparticle selection
2Leginonimage acquisition
4CTFFIND4CTF correction
7ISOLDEmodel fitting
9cisTEM1.0.0 betainitial Euler assignment
10cisTEM1.0.0 betafinal Euler assignment
11cisTEM1.0.0 betaclassification
12cisTEM1.0.0 beta3D reconstruction
13PHENIX1.2model refinement
14ISOLDE1model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 866240
SymmetryPoint symmetry: D2 (2x2 fold dihedral)
3D reconstructionResolution: 3.14 Å / Num. of particles: 207392 / Symmetry type: POINT
Atomic model buildingB value: 68 / Protocol: OTHER / Space: REAL
RefinementHighest resolution: 3.14 Å

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