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- EMDB-27828: Human Dis3L2 in complex with hairpin A-GCU14 -

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Basic information

Entry
Database: EMDB / ID: EMD-27828
TitleHuman Dis3L2 in complex with hairpin A-GCU14
Map data
Sample
  • Complex: Inactive HsDis3L2 (D391N) in complex with a short hairpin with a 16-nucleotide 3' overhang
    • Protein or peptide: DIS3-like exonuclease 2
    • RNA: RNA hairpin A-GCU14
Keywords3'-5' exonuclease / human exonuclease / RNA BINDING PROTEIN-RNA complex
Function / homology
Function and homology information


polyuridylation-dependent mRNA catabolic process / miRNA catabolic process / mitotic sister chromatid separation / : / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / poly(U) RNA binding / stem cell population maintenance / : / mRNA catabolic process / RNA nuclease activity ...polyuridylation-dependent mRNA catabolic process / miRNA catabolic process / mitotic sister chromatid separation / : / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / poly(U) RNA binding / stem cell population maintenance / : / mRNA catabolic process / RNA nuclease activity / P-body / mitotic cell cycle / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / 3'-5'-RNA exonuclease activity / negative regulation of cell population proliferation / cell division / magnesium ion binding / cytoplasm / cytosol
Similarity search - Function
DIS3-like exonuclease 2 / DIS3-like exonuclease 2, C-terminal / DIS3-like exonuclease 2 C terminal / Rrp44-like cold shock domain / Rrp44-like cold shock domain / Dis3-like cold-shock domain 2 / Dis3-like cold-shock domain 2 (CSD2) / Ribonuclease II/R, conserved site / Ribonuclease II family signature. / Ribonuclease II/R ...DIS3-like exonuclease 2 / DIS3-like exonuclease 2, C-terminal / DIS3-like exonuclease 2 C terminal / Rrp44-like cold shock domain / Rrp44-like cold shock domain / Dis3-like cold-shock domain 2 / Dis3-like cold-shock domain 2 (CSD2) / Ribonuclease II/R, conserved site / Ribonuclease II family signature. / Ribonuclease II/R / RNB domain / RNB / Nucleic acid-binding, OB-fold
Similarity search - Domain/homology
DIS3-like exonuclease 2
Similarity search - Component
Biological speciesHomo sapiens (human) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsMeze K / Thomas DR / Joshua-Tor L
Funding support United States, 2 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01-GM114147 United States
CitationJournal: Nat Struct Mol Biol / Year: 2023
Title: A shape-shifting nuclease unravels structured RNA.
Authors: Katarina Meze / Armend Axhemi / Dennis R Thomas / Ahmet Doymaz / Leemor Joshua-Tor /
Abstract: RNA turnover pathways ensure appropriate gene expression levels by eliminating unwanted transcripts. Dis3-like 2 (Dis3L2) is a 3'-5' exoribonuclease that plays a critical role in human development. ...RNA turnover pathways ensure appropriate gene expression levels by eliminating unwanted transcripts. Dis3-like 2 (Dis3L2) is a 3'-5' exoribonuclease that plays a critical role in human development. Dis3L2 independently degrades structured substrates, including coding and noncoding 3' uridylated RNAs. While the basis for Dis3L2's substrate recognition has been well characterized, the mechanism of structured RNA degradation by this family of enzymes is unknown. We characterized the discrete steps of the degradation cycle by determining cryogenic electron microscopy structures representing snapshots along the RNA turnover pathway and measuring kinetic parameters for RNA processing. We discovered a dramatic conformational change that is triggered by double-stranded RNA (dsRNA), repositioning two cold shock domains by 70 Å. This movement exposes a trihelix linker region, which acts as a wedge to separate the two RNA strands. Furthermore, we show that the trihelix linker is critical for dsRNA, but not single-stranded RNA, degradation. These findings reveal the conformational plasticity of Dis3L2 and detail a mechanism of structured RNA degradation.
History
DepositionAug 14, 2022-
Header (metadata) releaseMar 1, 2023-
Map releaseMar 1, 2023-
UpdateJun 12, 2024-
Current statusJun 12, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_27828.png

Downloads & links

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Map

FileDownload / File: emd_27828.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 0.66 Å
Density
Contour LevelBy AUTHOR: 0.0118
Minimum - Maximum-0.05118249 - 0.09841919
Average (Standard dev.)0.00005864122 (±0.0028697576)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 198.00002 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_27828_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_27828_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Inactive HsDis3L2 (D391N) in complex with a short hairpin with a ...

EntireName: Inactive HsDis3L2 (D391N) in complex with a short hairpin with a 16-nucleotide 3' overhang
Components
  • Complex: Inactive HsDis3L2 (D391N) in complex with a short hairpin with a 16-nucleotide 3' overhang
    • Protein or peptide: DIS3-like exonuclease 2
    • RNA: RNA hairpin A-GCU14

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Supramolecule #1: Inactive HsDis3L2 (D391N) in complex with a short hairpin with a ...

SupramoleculeName: Inactive HsDis3L2 (D391N) in complex with a short hairpin with a 16-nucleotide 3' overhang
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 100 KDa

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Macromolecule #1: DIS3-like exonuclease 2

MacromoleculeName: DIS3-like exonuclease 2 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 96.54332 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSHPDYRMNL RPLGTPRGVS AVAGPHDIGA SPGDKKSKNR STRGKKKSIF ETYMSKEDVS EGLKRGTLIQ GVLRINPKKF HEAFIPSPD GDRDIFIDGV VARNRALNGD LVVVKLLPEE HWKVVKPESN DKETEAAYES DIPEELCGHH LPQQSLKSYN D SPDVIVEA ...String:
MSHPDYRMNL RPLGTPRGVS AVAGPHDIGA SPGDKKSKNR STRGKKKSIF ETYMSKEDVS EGLKRGTLIQ GVLRINPKKF HEAFIPSPD GDRDIFIDGV VARNRALNGD LVVVKLLPEE HWKVVKPESN DKETEAAYES DIPEELCGHH LPQQSLKSYN D SPDVIVEA QFDGSDSEDG HGITQNVLVD GVKKLSVCVS EKGREDGDAP VTKDETTCIS QDTRALSEKS LQRSAKVVYI LE KKHSRAA TGFLKLLADK NSELFRKYAL FSPSDHRVPR IYVPLKDCPQ DFVARPKDYA NTLFICRIVD WKEDCNFALG QLA KSLGQA GEIEPETEGI LTEYGVDFSD FSSEVLECLP QGLPWTIPPE EFSKRRDLRK DCIFTIDPST ARDLNDALSC KPLA DGNFK VGVHIADVSY FVPEGSDLDK VAAERATSVY LVQKVVPMLP RLLCEELCSL NPMSDKLTFS VIWTLTPEGK ILDEW FGRT IIRSCTKLSY EHAQSMIESP TEKIPAKELP PISPEHSSEE VHQAVLNLHG IAKQLRQQRF VDGALRLDQL KLAFTL DHE TGLPQGCHIY EYRESNKLVE EFMLLANMAV AHKIHRAFPE QALLRRHPPP QTRMLSDLVE FCDQMGLPVD FSSAGAL NK SLTQTFGDDK YSLARKEVLT NMCSRPMQMA LYFCSGLLQD PAQFRHYALN VPLYTHFTSP IRRFADVLVH RLLAAALG Y RERLDMAPDT LQKQADHCND RRMASKRVQE LSTSLFFAVL VKESGPLESE AMVMGILKQA FDVLVLRYGV QKRIYCNAL ALRSHHFQKV GKKPELTLVW EPEDMEQEPA QQVITIFSLV EVVLQAESTA LKYSAILK

UniProtKB: DIS3-like exonuclease 2

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Macromolecule #2: RNA hairpin A-GCU14

MacromoleculeName: RNA hairpin A-GCU14 / type: rna / ID: 2 / Number of copies: 1
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 10.678133 KDa
SequenceString:
GAGGCCUUUC GAGGCCUUGC UUUUUUUUUU UUUU

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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

Concentration0.3 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormulaName
20.0 mMHEPES4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
150.0 mMNaClSodium Chloride
5.0 mMDTTDithiothreitol
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY ARRAY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AIR / Pretreatment - Pressure: 0.042 kPa
VitrificationCryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 295 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
TemperatureMin: 80.0 K / Max: 80.0 K
Image recordingFilm or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: COUNTING / Digitization - Dimensions - Width: 3840 pixel / Digitization - Dimensions - Height: 3712 pixel / Digitization - Frames/image: 1-25 / Number grids imaged: 1 / Number real images: 9654 / Average exposure time: 5.0 sec. / Average electron dose: 51.75 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Calibrated defocus max: 2.8000000000000003 µm / Calibrated defocus min: 0.5 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.6 µm / Nominal defocus min: 0.7000000000000001 µm / Nominal magnification: 160000
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: 1256757
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

4pmw


Details: Reference map was generated from PDB entry 4PMW, and filtered to 20A resolution.
Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 2.9) / Number images used: 557901
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 2.9) / Details: stochastic gradient descent
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 2.9)
Final 3D classificationNumber classes: 3 / Software - Name: RELION (ver. 2.9)

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Atomic model buiding 1

Initial modelPDB ID:

4pmw


Chain - Chain ID: C / Chain - Source name: PDB / Chain - Initial model type: experimental model
DetailsThe model of Homo Sapiens Dis3L2 was used as a starting reference for the protein and the nucleic acid was used from PDB 4PMW. All manual building was done in Coot. The models were fit into the maps and then refined using PHENIX.
RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-8e28:
Human Dis3L2 in complex with hairpin A-GCU14

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