3QRR

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.248 

wwPDB Validation   3D Report Full Report


This is version 1.2 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, 3QRR

  • 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 incorporation of short invading DNA sequences into the genome as CRISPR spacer elements separated by short repeat sequences ...

    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

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Putative uncharacterized protein TTHB192A267Thermus thermophilus HB8Mutation(s): 0 
Gene Names: TTHB1192TTHB192cse3cas6
EC: 3.1
UniProt
Find proteins for Q53WG9 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q53WG9 
Go to UniProtKB:  Q53WG9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ53WG9
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
RNA (5'-R(*GP*UP*CP*CP*CP*CP*AP*CP*GP*CP*GP*UP*GP*UP*GP*GP*GP*(23G))-3')B 18N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.248 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.17α = 90
b = 68.747β = 90
c = 155.84γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
SCALEPACKdata scaling
REFMACphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-05-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-01-24
    Changes: Structure summary