2Y9H

Structure A of CRISPR endoribonuclease Cse3 bound to 19 nt RNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

An RNA-Induced Conformational Change Required for Crispr RNA Cleavage by the Endoribonuclease Cse3.

Sashital, D.G.Jinek, M.Doudna, J.A.

(2011) Nat.Struct.Mol.Biol. 18: 680

  • DOI: 10.1038/nsmb.2043
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Clustered regularly interspaced short palindromic repeat (CRISPR) chromosomal loci found in prokaryotes provide an adaptive immune system against bacteriophages and plasmids. CRISPR-specific endoRNases produce short RNA molecules (crRNAs) from CRISPR ...

    Clustered regularly interspaced short palindromic repeat (CRISPR) chromosomal loci found in prokaryotes provide an adaptive immune system against bacteriophages and plasmids. CRISPR-specific endoRNases produce short RNA molecules (crRNAs) from CRISPR transcripts, which harbor sequences complementary to invasive nucleic acid elements and ensure their selective targeting by CRISPR-associated (Cas) proteins. The extreme sequence divergence of CRISPR-specific endoRNases and their RNA substrates has obscured homology-based comparison of RNA recognition and cleavage mechanisms. Here, we show that Cse3 type CRISPR-specific endoRNases bind a hairpin structure and residues downstream of the cleavage site within the repetitive segment of cognate CRISPR RNA. Cocrystal structures of Cse3-RNA complexes reveal an RNA-induced conformational change in the enzyme active site that aligns the RNA strand for site-specific cleavage. These studies provide insight into a catalytically essential RNA recognition mechanism by a large class of CRISPR-related endoRNases.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CSE3
A, C, E, G, I, K, M, O
215Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: cse3 (cas6)
EC: 3.1.-.-
Find proteins for Q53WG9 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q53WG9
Entity ID: 2
MoleculeChainsLengthOrganism
5'-R(*UP*CP*CP*CP*CP*AP*CP*GP*CP*GP*UP*GP*UP*GP *GP*GP*DGP*AP*UP)-3'B,D,F,H,J,L,N,P19N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.231 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 85.860α = 90.00
b = 149.810β = 94.60
c = 87.260γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
XDSdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-05-18
    Type: Initial release
  • Version 1.1: 2011-06-09
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance