3QRR

Structure of Thermus Thermophilus Cse3 bound to an RNA representing a product complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.099 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.245 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Recognition and maturation of effector RNAs in a CRISPR interference pathway.

Gesner, E.M.Schellenberg, M.J.Garside, E.L.George, M.M.Macmillan, A.M.

(2011) Nat.Struct.Mol.Biol. 18: 688-692

  • DOI: 10.1038/nsmb.2042
  • Primary Citation of Related Structures:  3QRP, 3QRQ

  • PubMed Abstract: 
  • In bacteria and archaea, small RNAs derived from clustered, regularly interspaced, short palindromic repeat (CRISPR) loci are involved in an adaptable and heritable gene-silencing pathway. Resistance to phage infection is conferred by the incorporati ...

    In bacteria and archaea, small RNAs derived from clustered, regularly interspaced, short palindromic repeat (CRISPR) loci are involved in an adaptable and heritable gene-silencing pathway. Resistance to phage infection is conferred by the incorporation of short invading DNA sequences into the genome as CRISPR spacer elements separated by short repeat sequences. Processing of long primary transcripts (pre-crRNAs) containing these repeats by an RNA endonuclease generates the mature effector RNAs that interfere with phage gene expression. Here we describe structural and functional analyses of the Thermus thermophilus CRISPR Cse3 endonuclease. High-resolution X-ray structures of Cse3 bound to repeat RNAs model both the pre- and post-cleavage complexes associated with processing the pre-crRNA. These structures establish the molecular basis of a specific CRISPR RNA recognition and suggest the mechanism for generation of effector RNAs responsible for gene silencing.


    Organizational Affiliation

    Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative uncharacterized protein TTHB192
A
267Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)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
RNA (5'-R(*GP*UP*CP*CP*CP*CP*AP*CP*GP*CP*GP*UP*GP*UP*GP*GP*GP*(23G))-3')B18N/A
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
23G
Query on 23G
B
RNA OH 3 prime terminusC10 H13 N5 O10 P2G
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.099 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.245 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 62.170α = 90.00
b = 68.747β = 90.00
c = 155.840γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
REFMACphasing
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-05-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance