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- PDB-9dhx: human Argonaute2 R315V/H316A - miR-122 in complex with a fully co... -

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Basic information

Entry
Database: PDB / ID: 9dhx
Titlehuman Argonaute2 R315V/H316A - miR-122 in complex with a fully complementary target
Components
  • Argonaute2 R315V/H316A
  • miR-122
  • target RNA
KeywordsRNA BINDING PROTEIN / RNP / RNA / Argonaute2 / Ago2
Function / homology
Function and homology information


: / endoribonuclease activity, cleaving miRNA-paired mRNA / endoribonuclease activity, cleaving siRNA-paired mRNA / siRNA-mediated gene silencing by mRNA destabilization / miRNA-mediated gene silencing by mRNA destabilization / Post-transcriptional silencing by small RNAs / Competing endogenous RNAs (ceRNAs) regulate PTEN translation / Regulation of CDH11 mRNA translation by microRNAs / Regulation of NPAS4 mRNA translation / Regulation of PTEN mRNA translation ...: / endoribonuclease activity, cleaving miRNA-paired mRNA / endoribonuclease activity, cleaving siRNA-paired mRNA / siRNA-mediated gene silencing by mRNA destabilization / miRNA-mediated gene silencing by mRNA destabilization / Post-transcriptional silencing by small RNAs / Competing endogenous RNAs (ceRNAs) regulate PTEN translation / Regulation of CDH11 mRNA translation by microRNAs / Regulation of NPAS4 mRNA translation / Regulation of PTEN mRNA translation / negative regulation of amyloid precursor protein biosynthetic process / RNA stabilization / Small interfering RNA (siRNA) biogenesis / Regulation of CDH1 mRNA translation by microRNAs / positive regulation of trophoblast cell migration / Transcriptional Regulation by MECP2 / RISC-loading complex / miRNA metabolic process / mRNA cap binding / RISC complex assembly / regulatory ncRNA-mediated post-transcriptional gene silencing / miRNA-mediated gene silencing by inhibition of translation / miRNA processing / RNA 7-methylguanosine cap binding / pre-miRNA processing / regulation of synapse maturation / siRNA processing / siRNA binding / mRNA 3'-UTR AU-rich region binding / M-decay: degradation of maternal mRNAs by maternally stored factors / Regulation of MITF-M-dependent genes involved in apoptosis / RISC complex / TGFBR3 expression / regulatory ncRNA-mediated gene silencing / Regulation of RUNX1 Expression and Activity / P-body assembly / miRNA binding / MicroRNA (miRNA) biogenesis / positive regulation of nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / RNA polymerase II complex binding / Regulation of MECP2 expression and activity / core promoter sequence-specific DNA binding / NR1H3 & NR1H2 regulate gene expression linked to cholesterol transport and efflux / Nuclear events stimulated by ALK signaling in cancer / RNA endonuclease activity / translation initiation factor activity / negative regulation of translational initiation / positive regulation of translation / post-embryonic development / TP53 Regulates Metabolic Genes / P-body / Transcriptional regulation by small RNAs / MAPK6/MAPK4 signaling / Pre-NOTCH Transcription and Translation / positive regulation of angiogenesis / cytoplasmic ribonucleoprotein granule / double-stranded RNA binding / Ca2+ pathway / Estrogen-dependent gene expression / single-stranded RNA binding / postsynapse / translation / dendrite / glutamatergic synapse / positive regulation of transcription by RNA polymerase II / RNA binding / extracellular exosome / nucleoplasm / membrane / metal ion binding / nucleus / cytoplasm / cytosol
Similarity search - Function
Protein argonaute-2 / Protein argonaute, Mid domain / Mid domain of argonaute / Argonaute linker 2 domain / Protein argonaute, N-terminal / Argonaute-like, PIWI domain / N-terminal domain of argonaute / Argonaute linker 2 domain / DUF1785 / Argonaute, linker 1 domain ...Protein argonaute-2 / Protein argonaute, Mid domain / Mid domain of argonaute / Argonaute linker 2 domain / Protein argonaute, N-terminal / Argonaute-like, PIWI domain / N-terminal domain of argonaute / Argonaute linker 2 domain / DUF1785 / Argonaute, linker 1 domain / Argonaute linker 1 domain / Piwi domain profile. / Piwi domain / Piwi domain / Piwi / PAZ domain superfamily / PAZ / PAZ domain / PAZ domain profile. / PAZ domain / Ribonuclease H superfamily / Ribonuclease H-like superfamily
Similarity search - Domain/homology
RNA / RNA (> 10) / Protein argonaute-2
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsSarkar, S. / Gebert, L.F.R. / MacRae, I.J.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)5R35GM127090 United States
CitationJournal: To Be Published
Title: human Argonaute2 R315V/H316A - miR-122 in complex with a fully complementary target
Authors: Sarkar, S. / Gebert, L.F.R. / MacRae, I.J.
History
DepositionSep 4, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 4, 2026Provider: repository / Type: Initial release
Revision 1.0Mar 4, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Mar 4, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Mar 4, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Mar 4, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Mar 4, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Mar 11, 2026Group: Data collection / Database references / Structure summary
Category: citation / em_admin ...citation / em_admin / entity / pdbx_database_related / struct
Item: _citation.title / _em_admin.last_update ..._citation.title / _em_admin.last_update / _entity.pdbx_description / _struct.title
Revision 1.1Mar 11, 2026Data content type: EM metadata / Data content type: EM metadata / EM metadata / EM metadata
Group: Database references / Experimental summary / Structure summary
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Item: _citation.title / _em_admin.last_update / _entity.pdbx_description

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Argonaute2 R315V/H316A
B: miR-122
C: target RNA
hetero molecules


Theoretical massNumber of molelcules
Total (without water)110,3834
Polymers110,3593
Non-polymers241
Water362
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Argonaute2 R315V/H316A / Argonaute2 / hAgo2 / Argonaute RISC catalytic component 2 / Eukaryotic translation initiation ...Argonaute2 / hAgo2 / Argonaute RISC catalytic component 2 / Eukaryotic translation initiation factor 2C 2 / eIF-2C 2 / eIF2C 2 / PAZ Piwi domain protein / PPD / Protein slicer


Mass: 97277.062 Da / Num. of mol.: 1 / Mutation: R315V, H316A, S387D, S824A, S828D, S831D, S834A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: AGO2, EIF2C2 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: Q9UKV8, Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters
#2: RNA chain miR-122


Mass: 6481.856 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human)
#3: RNA chain target RNA


Mass: 6600.012 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN
Has protein modificationN

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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: human Argonaute-2 R315V/H316A - miR-122 in complex with a fully complementary target
Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
150 mMTRISTRIS1
2100 mMNaClNaCl1
30.5 mMTCEPTCEP1
SpecimenConc.: 1.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: 15 mA / Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: UltrAuFoil R1.2/1.3
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: Talos Arctica / Image courtesy: FEI Company
MicroscopyModel: FEI TALOS ARCTICA
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal magnification: 190000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 3.2 sec. / Electron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) / Num. of grids imaged: 6 / Num. of real images: 15000
Image scansWidth: 4096 / Height: 4096

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Processing

EM software
IDNameVersionCategory
1cryoSPARC4.3particle selection
2EPUimage acquisition
4cryoSPARC4.3CTF correction
7UCSF ChimeraX1.7.1model fitting
11cryoSPARC4.3classification
12cryoSPARC4.33D reconstruction
19PHENIX1.20.1model refinement
20Coot0.9.8.1model refinement
21UCSF ChimeraX1.7.1model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 3286293
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 264433 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Atomic model buildingPDB-ID: 6N4O

6n4o


Pdb chain-ID: A / Accession code: 6N4O / Source name: PDB / Type: experimental model
RefinementHighest resolution: 3.1 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0046624
ELECTRON MICROSCOPYf_angle_d0.5469162
ELECTRON MICROSCOPYf_dihedral_angle_d7.8691250
ELECTRON MICROSCOPYf_chiral_restr0.0421052
ELECTRON MICROSCOPYf_plane_restr0.0051027

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