6JDQ

Crystal structure of Nme1Cas9 in complex with sgRNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.257 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structures of Neisseria meningitidis Cas9 Complexes in Catalytically Poised and Anti-CRISPR-Inhibited States.

Sun, W.Yang, J.Cheng, Z.Amrani, N.Liu, C.Wang, K.Ibraheim, R.Edraki, A.Huang, X.Wang, M.Wang, J.Liu, L.Sheng, G.Yang, Y.Lou, J.Sontheimer, E.J.Wang, Y.

(2019) Mol Cell 76: 938

  • DOI: https://doi.org/10.1016/j.molcel.2019.09.025
  • Primary Citation of Related Structures:  
    6JDQ, 6JDV, 6JE3, 6JE4, 6JE9, 6JFU, 6KC7, 6KC8

  • PubMed Abstract: 

    High-resolution Cas9 structures have yet to reveal catalytic conformations due to HNH nuclease domain positioning away from the cleavage site. Nme1Cas9 and Nme2Cas9 are compact nucleases for in vivo genome editing. Here, we report structures of meningococcal Cas9 homologs in complex with sgRNA, dsDNA, or the AcrIIC3 anti-CRISPR protein. DNA-bound structures represent an early step of target recognition, a later HNH pre-catalytic state, the HNH catalytic state, and a cleaved-target-DNA-bound state. In the HNH catalytic state of Nme1Cas9, the active site is seen poised at the scissile phosphodiester linkage of the target strand, providing a high-resolution view of the active conformation. The HNH active conformation activates the RuvC domain. Our structures explain how Nme1Cas9 and Nme2Cas9 read distinct PAM sequences and how AcrIIC3 inhibits Nme1Cas9 activity. These structures provide insights into Cas9 domain rearrangements, guide-target engagement, cleavage mechanism, and anti-CRISPR inhibition, facilitating the optimization of these genome-editing platforms.


  • Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CRISPR-associated endonuclease Cas91,092Neisseria meningitidis 8013Mutation(s): 0 
Gene Names: cas9NMV_1993
EC: 3.1
UniProt
Find proteins for C9X1G5 (Neisseria meningitidis serogroup C (strain 8013))
Explore C9X1G5 
Go to UniProtKB:  C9X1G5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC9X1G5
Sequence Annotations
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  • Reference Sequence
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains LengthOrganismImage
sgRNA135synthetic construct
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.257 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.08α = 90
b = 122.452β = 90
c = 238.074γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31725008

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-06
    Type: Initial release
  • Version 1.1: 2019-11-13
    Changes: Data collection, Database references
  • Version 1.2: 2020-01-08
    Changes: Database references
  • Version 1.3: 2023-11-22
    Changes: Data collection, Database references, Refinement description