4ZT9

Nuclease-inactive Streptococcus pyogenes Cas9 (D10A/H840A, dCas9) in complex with single-guide RNA at 3.1 Angstrom resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

A Cas9-guide RNA complex preorganized for target DNA recognition.

Jiang, F.Zhou, K.Ma, L.Gressel, S.Doudna, J.A.

(2015) Science 348: 1477-1481

  • DOI: 10.1126/science.aab1452
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bacterial adaptive immunity uses CRISPR (clustered regularly interspaced short palindromic repeats)-associated (Cas) proteins together with CRISPR transcripts for foreign DNA degradation. In type II CRISPR-Cas systems, activation of Cas9 endonuclease ...

    Bacterial adaptive immunity uses CRISPR (clustered regularly interspaced short palindromic repeats)-associated (Cas) proteins together with CRISPR transcripts for foreign DNA degradation. In type II CRISPR-Cas systems, activation of Cas9 endonuclease for DNA recognition upon guide RNA binding occurs by an unknown mechanism. Crystal structures of Cas9 bound to single-guide RNA reveal a conformation distinct from both the apo and DNA-bound states, in which the 10-nucleotide RNA "seed" sequence required for initial DNA interrogation is preordered in an A-form conformation. This segment of the guide RNA is essential for Cas9 to form a DNA recognition-competent structure that is poised to engage double-stranded DNA target sequences. We construe this as convergent evolution of a "seed" mechanism reminiscent of that used by Argonaute proteins during RNA interference in eukaryotes.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CRISPR-associated endonuclease Cas9
A, C
1369Streptococcus pyogenes serotype M1Mutation(s): 2 
Gene Names: cas9 (csn1)
EC: 3.1.-.-
Find proteins for Q99ZW2 (Streptococcus pyogenes serotype M1)
Go to UniProtKB:  Q99ZW2
Entity ID: 2
MoleculeChainsLengthOrganism
single-guide RNAB,D85Streptococcus pyogenes
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.243 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 102.505α = 90.00
b = 143.046β = 90.00
c = 296.145γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
PHENIXrefinement
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-08
    Type: Initial release