Structure of S-Adenosylmethionine:tRNA Ribosyltransferase-Isomerase (QueA)

Experimental Data Snapshot

  • Resolution: 2.88 Å
  • R-Value Free: 0.386 
  • R-Value Work: 0.364 
  • R-Value Observed: 0.364 

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This is version 1.2 of the entry. See complete history


Crystal structure of Bacillus subtilis S-adenosylmethionine:tRNA ribosyltransferase-isomerase

Grimm, C.Ficner, R.Sgraja, T.Haebel, P.Klebe, G.Reuter, K.

(2006) Biochem Biophys Res Commun 351: 695-701

  • DOI: https://doi.org/10.1016/j.bbrc.2006.10.096
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The enzyme S-adenosylmethionine:tRNA ribosyltransferase-isomerase (QueA) is involved in the biosynthesis of the hypermodified tRNA nucleoside queuosine. It is unprecedented in nature as it uses the cofactor S-adenosylmethionine as the donor of a ribosyl group. We have determined the crystal structure of Bacillus subtilis QueA at a resolution of 2.9A. The structure reveals two domains representing a 6-stranded beta-barrel and an alpha beta alpha-sandwich, respectively. All amino acid residues invariant in the QueA enzymes of known sequence cluster at the interface of the two domains indicating the localization of the substrate binding region and active center. Comparison of the B. subtilis QueA structure with the structure of QueA from Thermotoga maritima suggests a high domain flexibility of this enzyme.

  • Organizational Affiliation

    Institut für Pharmazeutische Chemie, Philipps-Universität Marburg, Marbacher Weg 6, 35032 Marburg, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
S-adenosylmethionine:tRNA ribosyltransferase-isomerase
A, B
346Bacillus subtilisMutation(s): 0 
EC: 5
Find proteins for O32054 (Bacillus subtilis (strain 168))
Explore O32054 
Go to UniProtKB:  O32054
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO32054
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.88 Å
  • R-Value Free: 0.386 
  • R-Value Work: 0.364 
  • R-Value Observed: 0.364 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.671α = 90
b = 101.671β = 90
c = 152.794γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-03-21
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance