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- EMDB-47943: SpCas9 with 17-bp R-loop containing 2 terminal mismatches (State ... -

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Basic information

Entry
Database: EMDB / ID: EMD-47943
TitleSpCas9 with 17-bp R-loop containing 2 terminal mismatches (State V - dissociated)
Map dataSpCas9 with 17-bp R-loop containing 2 terminal mismatches (State V - dissociated)
Sample
  • Complex: Ternary complex - SpCas9, mm2 sgRNA, 55-bp dsDNA
    • Protein or peptide: CRISPR-associated endonuclease Cas9/Csn1
    • RNA: sgRNA
    • DNA: Target Strand
    • DNA: Non-target Strand
KeywordsCRISPR-associated endonuclease / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA-RNA complex
Function / homology
Function and homology information


maintenance of CRISPR repeat elements / 3'-5' exonuclease activity / DNA endonuclease activity / defense response to virus / Hydrolases; Acting on ester bonds / DNA binding / RNA binding / metal ion binding
Similarity search - Function
CRISPR-associated endonuclease Cas9, PAM-interacting domain / CRISPR-associated endonuclease Cas9, bridge helix / CRISPR-associated endonuclease Cas9, REC lobe / REC lobe of CRISPR-associated endonuclease Cas9 / Bridge helix of CRISPR-associated endonuclease Cas9 / PAM-interacting domain of CRISPR-associated endonuclease Cas9 / : / Cas9 RuvC domain / HNH endonuclease / CRISPR-associated endonuclease Cas9 ...CRISPR-associated endonuclease Cas9, PAM-interacting domain / CRISPR-associated endonuclease Cas9, bridge helix / CRISPR-associated endonuclease Cas9, REC lobe / REC lobe of CRISPR-associated endonuclease Cas9 / Bridge helix of CRISPR-associated endonuclease Cas9 / PAM-interacting domain of CRISPR-associated endonuclease Cas9 / : / Cas9 RuvC domain / HNH endonuclease / CRISPR-associated endonuclease Cas9 / Cas9-type HNH domain / Cas9-type HNH domain profile. / HNH nuclease / Ribonuclease H superfamily
Similarity search - Domain/homology
CRISPR-associated endonuclease Cas9/Csn1
Similarity search - Component
Biological speciesStreptococcus pyogenes (bacteria) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsKiernan KA / Taylor DW
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM138348 United States
Welch FoundationF-1938-20200401 United States
American Cancer SocietyRSG-21-050-01-DMC United States
CitationJournal: To Be Published
Title: Kinetics-guided cryo-EM enables visualization of Cas9 dissociation post-cleavage
Authors: Kiernan KA / Taylor DW
History
DepositionNov 16, 2024-
Header (metadata) releaseJun 18, 2025-
Map releaseJun 18, 2025-
UpdateJun 18, 2025-
Current statusJun 18, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_47943.png

Downloads & links

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Map

FileDownload / File: emd_47943.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSpCas9 with 17-bp R-loop containing 2 terminal mismatches (State V - dissociated)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 512 pix.
= 426.598 Å		0.83 Å/pix.
x 512 pix.
= 426.598 Å		0.83 Å/pix.
x 512 pix.
= 426.598 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.8332 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.1
Minimum - Maximum-0.38480368 - 0.6891504
Average (Standard dev.)-0.00008751282 (±0.0125746345)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions512512512
Spacing512512512
CellA=B=C: 426.5984 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: Half Map B

Fileemd_47943_half_map_1.map
AnnotationHalf Map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half Map A

Fileemd_47943_half_map_2.map
AnnotationHalf Map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Ternary complex - SpCas9, mm2 sgRNA, 55-bp dsDNA

EntireName: Ternary complex - SpCas9, mm2 sgRNA, 55-bp dsDNA
Components
  • Complex: Ternary complex - SpCas9, mm2 sgRNA, 55-bp dsDNA
    • Protein or peptide: CRISPR-associated endonuclease Cas9/Csn1
    • RNA: sgRNA
    • DNA: Target Strand
    • DNA: Non-target Strand

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Supramolecule #1: Ternary complex - SpCas9, mm2 sgRNA, 55-bp dsDNA

SupramoleculeName: Ternary complex - SpCas9, mm2 sgRNA, 55-bp dsDNA / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Streptococcus pyogenes (bacteria)

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Macromolecule #1: CRISPR-associated endonuclease Cas9/Csn1

MacromoleculeName: CRISPR-associated endonuclease Cas9/Csn1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: Hydrolases; Acting on ester bonds
Source (natural)Organism: Streptococcus pyogenes (bacteria)
Molecular weightTheoretical: 158.699844 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MDKKYSIGLD IGTNSVGWAV ITDEYKVPSK KFKVLGNTDR HSIKKNLIGA LLFDSGETAE ATRLKRTARR RYTRRKNRIC YLQEIFSNE MAKVDDSFFH RLEESFLVEE DKKHERHPIF GNIVDEVAYH EKYPTIYHLR KKLVDSTDKA DLRLIYLALA H MIKFRGHF ...String:
MDKKYSIGLD IGTNSVGWAV ITDEYKVPSK KFKVLGNTDR HSIKKNLIGA LLFDSGETAE ATRLKRTARR RYTRRKNRIC YLQEIFSNE MAKVDDSFFH RLEESFLVEE DKKHERHPIF GNIVDEVAYH EKYPTIYHLR KKLVDSTDKA DLRLIYLALA H MIKFRGHF LIEGDLNPDN SDVDKLFIQL VQTYNQLFEE NPINASGVDA KAILSARLSK SRRLENLIAQ LPGEKKNGLF GN LIALSLG LTPNFKSNFD LAEDAKLQLS KDTYDDDLDN LLAQIGDQYA DLFLAAKNLS DAILLSDILR VNTEITKAPL SAS MIKRYD EHHQDLTLLK ALVRQQLPEK YKEIFFDQSK NGYAGYIDGG ASQEEFYKFI KPILEKMDGT EELLVKLNRE DLLR KQRTF DNGSIPHQIH LGELHAILRR QEDFYPFLKD NREKIEKILT FRIPYYVGPL ARGNSRFAWM TRKSEETITP WNFEE VVDK GASAQSFIER MTNFDKNLPN EKVLPKHSLL YEYFTVYNEL TKVKYVTEGM RKPAFLSGEQ KKAIVDLLFK TNRKVT VKQ LKEDYFKKIE CFDSVEISGV EDRFNASLGT YHDLLKIIKD KDFLDNEENE DILEDIVLTL TLFEDREMIE ERLKTYA HL FDDKVMKQLK RRRYTGWGRL SRKLINGIRD KQSGKTILDF LKSDGFANRN FMQLIHDDSL TFKEDIQKAQ VSGQGDSL H EHIANLAGSP AIKKGILQTV KVVDELVKVM GRHKPENIVI EMARENQTTQ KGQKNSRERM KRIEEGIKEL GSQILKEHP VENTQLQNEK LYLYYLQNGR DMYVDQELDI NRLSDYDVDH IVPQSFLKDD SIDNKVLTRS DKNRGKSDNV PSEEVVKKMK NYWRQLLNA KLITQRKFDN LTKAERGGLS ELDKAGFIKR QLVETRQITK HVAQILDSRM NTKYDENDKL IREVKVITLK S KLVSDFRK DFQFYKVREI NNYHHAHDAY LNAVVGTALI KKYPKLESEF VYGDYKVYDV RKMIAKSEQE IGKATAKYFF YS NIMNFFK TEITLANGEI RKRPLIETNG ETGEIVWDKG RDFATVRKVL SMPQVNIVKK TEVQTGGFSK ESILPKRNSD KLI ARKKDW DPKKYGGFDS PTVAYSVLVV AKVEKGKSKK LKSVKELLGI TIMERSSFEK NPIDFLEAKG YKEVKKDLII KLPK YSLFE LENGRKRMLA SAGELQKGNE LALPSKYVNF LYLASHYEKL KGSPEDNEQK QLFVEQHKHY LDEIIEQISE FSKRV ILAD ANLDKVLSAY NKHRDKPIRE QAENIIHLFT LTNLGAPAAF KYFDTTIDRK RYTSTKEVLD ATLIHQSITG LYETRI DLS QLGGD

UniProtKB: CRISPR-associated endonuclease Cas9/Csn1

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Macromolecule #2: sgRNA

MacromoleculeName: sgRNA / type: rna / ID: 2 / Number of copies: 1
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 31.335643 KDa
SequenceString:
CGAUAAAGAU GAGACGCGUU UUAGAGCUAG AAAUAGCAAG UUAAAAUAAG GCUAGUCCGU UAUCAACUUG AAAAAGUGGC ACCGAGUCG GUGCUUUU

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Macromolecule #3: Target Strand

MacromoleculeName: Target Strand / type: dna / ID: 3 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 6.743352 KDa
SequenceString:
(DA)(DG)(DC)(DT)(DG)(DA)(DC)(DG)(DT)(DT) (DT)(DG)(DT)(DA)(DC)(DT)(DC)(DC)(DA)(DG) (DC)(DG)

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Macromolecule #4: Non-target Strand

MacromoleculeName: Non-target Strand / type: dna / ID: 4 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 6.76138 KDa
SequenceString:
(DC)(DG)(DC)(DT)(DG)(DG)(DA)(DG)(DT)(DA) (DC)(DA)(DA)(DA)(DC)(DG)(DT)(DC)(DA)(DG) (DC)(DT)

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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

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOCONTINUUM (6k x 4k) / Average electron dose: 80.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 1.2 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 26205
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

6o0z


Chain - Source name: PDB / Chain - Initial model type: experimental model
Output model

PDB-9edb:
SpCas9 with 17-bp R-loop containing 2 terminal mismatches (State V - dissociated)

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