Crystal structure of the extremely thermostable Aeropyrum pernix L7Ae multifunctional protein

Experimental Data Snapshot

  • Resolution: 1.56 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 

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This is version 1.5 of the entry. See complete history


Structure of the Aeropyrum pernix L7Ae multifunctional protein and insight into its extreme thermostability.

Bhuiya, M.W.Suryadi, J.Zhou, Z.Brown, B.A.

(2013) Acta Crystallogr Sect F Struct Biol Cryst Commun 69: 979-988

  • DOI: https://doi.org/10.1107/S1744309113021799
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Archaeal ribosomal protein L7Ae is a multifunctional RNA-binding protein that directs post-transcriptional modification of archaeal RNAs. The L7Ae protein from Aeropyrum pernix (Ap L7Ae), a member of the Crenarchaea, was found to have an extremely high melting temperature (>383 K). The crystal structure of Ap L7Ae has been determined to a resolution of 1.56 Å. The structure of Ap L7Ae was compared with the structures of two homologs: hyperthermophilic Methanocaldococcus jannaschii L7Ae and the mesophilic counterpart mammalian 15.5 kD protein. The primary stabilizing feature in the Ap L7Ae protein appears to be the large number of ion pairs and extensive ion-pair network that connects secondary-structural elements. To our knowledge, Ap L7Ae is among the most thermostable single-domain monomeric proteins presently observed.

  • Organizational Affiliation

    Conagen Inc., Saint Louis, MO 63132, USA. wadud@conagen-inc.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
50S ribosomal protein L7Ae124Aeropyrum pernixMutation(s): 0 
Gene Names: rpl7ae
Find proteins for Q9YAX7 (Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1))
Explore Q9YAX7 
Go to UniProtKB:  Q9YAX7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9YAX7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.56 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.054α = 90
b = 49.188β = 90
c = 65.048γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
CrystalCleardata reduction
CrystalCleardata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-11-28
    Type: Initial release
  • Version 1.1: 2008-04-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2013-09-11
    Changes: Database references
  • Version 1.4: 2017-10-18
    Changes: Refinement description
  • Version 1.5: 2023-08-30
    Changes: Data collection, Database references, Refinement description