1SDS

Structure of protein L7Ae bound to a K-turn derived from an archaeal box H/ACA sRNA

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.207 

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This is version 1.4 of the entry. See complete history. 


Literature

Structure of Protein L7Ae Bound to a K-Turn Derived from an Archaeal Box H/ACA sRNA at 1.8 A Resolution.

Hamma, T., Ferre-D'Amare, A.

(2004) Structure 12: 893-903

  • DOI: 10.1016/j.str.2004.03.015
  • Primary Citation of Related Structures:  
    1SDS

  • PubMed Abstract: 

    • The archaeal RNA binding protein L7Ae and its eukaryotic homolog 15.5 kDa/Snu13 recognize K-turns. This structural motif is canonically comprised of two stems (one with tandem A.G base pairs, the other with Watson-Crick pairs) linked by an asymmetric internal loop ...

    The archaeal RNA binding protein L7Ae and its eukaryotic homolog 15.5 kDa/Snu13 recognize K-turns. This structural motif is canonically comprised of two stems (one with tandem A.G base pairs, the other with Watson-Crick pairs) linked by an asymmetric internal loop. L7Ae recognizes conventional K-turns in ribosomal and box C/D RNAs but also binds specifically to some box H/ACA RNAs at terminal stem loops. These have the A.G paired stem, but lack the Watson-Crick stem. The structure of Methanococcus jannaschii L7Ae bound to a symmetric duplex RNA without Watson-Crick stems demonstrates how a binding site for this component of diverse ribonucleoprotein complexes can be constructed with only the A.G stem and the loop. The RNA adopts a functional conformation with the aid of a base triple and tight binding of divalent cations. Comparison with the 15.5 kDa/Snu13-RNA complex structure suggests why the eukaryotic homolog does not recognize terminal stem loop L7Ae binding sites.

    Organizational Affiliation: 

    Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, Seattle, WA 98109 USA.



Macromolecules

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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L7AeD [auth A], E [auth B], F [auth C]117Methanocaldococcus jannaschiiMutation(s): 0 
Gene Names: rpl7ae, MJ1203
UniProt
Find proteins for P54066 (Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440))
Explore P54066 
Go to UniProtKB:  P54066
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    box H/ACA sRNAA [auth D], B [auth E], C [auth F]15N/A
    Protein Feature View
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    • Reference Sequence
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 1.80 Å
    • R-Value Free: 0.225 
    • R-Value Work: 0.207 
    • R-Value Observed: 0.207 
    • Space Group: F 2 2 2
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 106.97α = 90
    b = 141.3β = 90
    c = 162.87γ = 90
    Software Package:
    Software NamePurpose
    CNSrefinement
    HKL-2000data reduction
    SCALEPACKdata scaling
    SOLVEphasing

    Structure Validation

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    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 2004-05-18
      Type: Initial release
    • Version 1.1: 2008-04-29
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance
    • Version 1.3: 2011-11-16
      Changes: Atomic model
    • Version 1.4: 2018-01-31
      Changes: Experimental preparation