[English] 日本語
Yorodumi
- PDB-6mcb: CryoEM structure of AcrIIA2 in complex with CRISPR-Cas9 -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 6mcb
TitleCryoEM structure of AcrIIA2 in complex with CRISPR-Cas9
Components
  • Anti-CRISPR protein AcrIIA2
  • CRISPR-associated endonuclease Cas9
  • Single guide RNA (116-MER)
KeywordsHYDROLASE/RNA/VIRAL PROTEIN / CRISPR-Cas / Cas9 / Cas9 inhibitors / anti-CRISPR / AcrIIA2 / bacteriophage / gene editing / HYDROLASE-RNA-VIRAL PROTEIN complex
Function / homology
Function and homology information


maintenance of CRISPR repeat elements / defense response to virus / endonuclease activity / 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 / CRISPR-associated endonuclease Cas9 / HNH endonuclease / Cas9-type HNH domain / Cas9-type HNH domain profile. ...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 / CRISPR-associated endonuclease Cas9 / HNH endonuclease / Cas9-type HNH domain / Cas9-type HNH domain profile. / HNH nuclease / Ribonuclease H superfamily
Similarity search - Domain/homology
RNA / RNA (> 10) / RNA (> 100) / CRISPR-associated endonuclease Cas9
Similarity search - Component
Biological speciesStreptococcus pyogenes M1 GAS (bacteria)
Listeria phage LP-101 (virus)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsJiang, F. / Liu, J.J. / Doudna, J.A.
Funding support United States, 1items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Mol Cell / Year: 2019
Title: Temperature-Responsive Competitive Inhibition of CRISPR-Cas9.
Authors: Fuguo Jiang / Jun-Jie Liu / Beatriz A Osuna / Michael Xu / Joel D Berry / Benjamin J Rauch / Eva Nogales / Joseph Bondy-Denomy / Jennifer A Doudna /
Abstract: CRISPR-Cas immune systems utilize RNA-guided nucleases to protect bacteria from bacteriophage infection. Bacteriophages have in turn evolved inhibitory "anti-CRISPR" (Acr) proteins, including six ...CRISPR-Cas immune systems utilize RNA-guided nucleases to protect bacteria from bacteriophage infection. Bacteriophages have in turn evolved inhibitory "anti-CRISPR" (Acr) proteins, including six inhibitors (AcrIIA1-AcrIIA6) that can block DNA cutting and genome editing by type II-A CRISPR-Cas9 enzymes. We show here that AcrIIA2 and its more potent homolog, AcrIIA2b, prevent Cas9 binding to DNA by occluding protein residues required for DNA binding. Cryo-EM-determined structures of AcrIIA2 or AcrIIA2b bound to S. pyogenes Cas9 reveal a mode of competitive inhibition of DNA binding that is distinct from other known Acrs. Differences in the temperature dependence of Cas9 inhibition by AcrIIA2 and AcrIIA2b arise from differences in both inhibitor structure and the local inhibitor-binding environment on Cas9. These findings expand the natural toolbox for regulating CRISPR-Cas9 genome editing temporally, spatially, and conditionally.
History
DepositionAug 31, 2018Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 16, 2019Provider: repository / Type: Initial release
Revision 1.1Feb 20, 2019Group: Data collection / Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.year
Revision 1.2Nov 20, 2019Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.3Mar 13, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type

-
Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
  • Download
  • Superimposition on EM map
  • EMDB-9066
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
B: Single guide RNA (116-MER)
A: CRISPR-associated endonuclease Cas9
C: Anti-CRISPR protein AcrIIA2


Theoretical massNumber of molelcules
Total (without water)210,4963
Polymers210,4963
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area18560 Å2
ΔGint-134 kcal/mol
Surface area78800 Å2

-
Components

#1: RNA chain Single guide RNA (116-MER)


Mass: 37642.258 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Streptococcus pyogenes M1 GAS (bacteria)
Production host: Escherichia coli (E. coli)
#2: Protein CRISPR-associated endonuclease Cas9


Mass: 158685.828 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Streptococcus pyogenes M1 GAS (bacteria)
Gene: cas9, M1GAS476_0830 / Production host: Escherichia coli (E. coli)
References: UniProt: J7M7J1, Hydrolases; Acting on ester bonds
#3: Protein Anti-CRISPR protein AcrIIA2 /


Mass: 14167.594 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Listeria phage LP-101 (virus) / Production host: Escherichia coli (E. coli)

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

-
Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1AcrIIA2 interacting with sgRNA-bound Streptococcus pyogenes Cas9COMPLEXall0MULTIPLE SOURCES
2sgRNA-bound Streptococcus pyogenes Cas9COMPLEX#1-#21RECOMBINANT
3AcrIIA2COMPLEX#31RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Streptococcus pyogenes M1 GAS (bacteria)160490
23Listeria phage LP-101 (virus)1458856
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Escherichia coli (E. coli)562
23Escherichia coli (E. coli)562
Buffer solutionpH: 8
Details: 30 mM Tris-HCl, pH 8.0, 150 mM sodium chloride, 5 mM DTT, 0.1% glycerol
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: SpyCas9-sgRNA-AcrIIA2 complex
Specimen supportGrid type: C-flat-2/0.5 4C
VitrificationInstrument: FEI VITROBOT MARK II / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

-
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: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 43.2 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

-
Processing

SoftwareName: PHENIX / Version: 1.12_2829: / Classification: refinement
EM software
IDNameVersionCategory
7Coot0.8.9model fitting
13PHENIX1.12-2829model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 263270 / Symmetry type: POINT
Atomic model buildingProtocol: OTHER / Space: REAL
Atomic model buildingPDB-ID: 4ZT0

4zt0


Accession code: 4ZT0 / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0114693
ELECTRON MICROSCOPYf_angle_d1.08820446
ELECTRON MICROSCOPYf_dihedral_angle_d11.9598623
ELECTRON MICROSCOPYf_chiral_restr0.0612407
ELECTRON MICROSCOPYf_plane_restr0.0072197

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more