1R3F

Crystal Structure of tRNA Pseudouridine Synthase TruB and Its RNA Complex: RNA-protein Recognition Through a Combination of Rigid Docking and Induced Fit


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.228 

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This is version 1.3 of the entry. See complete history


Literature

Structure of tRNA Pseudouridine Synthase TruB and Its RNA Complex: RNA Recognition Through a Combination of Rigid Docking and Induced Fit

Pan, H.Agarwalla, S.Moustakas, D.T.Finer-Moore, J.Stroud, R.M.

(2003) Proc Natl Acad Sci U S A 100: 12648-12653

  • DOI: 10.1073/pnas.2135585100
  • Primary Citation of Related Structures:  
    1R3F, 1R3E

  • PubMed Abstract: 
  • RNA pseudouridine synthase, TruB, catalyzes pseudouridine formation at U55 in tRNA. This posttranscriptional modification is almost universally conserved and occurs in the T arm of most tRNAs. We determined the crystal structure of Escherichia coli TruB apo enzyme, as well as the structure of Thermotoga maritima TruB in complex with RNA ...

    RNA pseudouridine synthase, TruB, catalyzes pseudouridine formation at U55 in tRNA. This posttranscriptional modification is almost universally conserved and occurs in the T arm of most tRNAs. We determined the crystal structure of Escherichia coli TruB apo enzyme, as well as the structure of Thermotoga maritima TruB in complex with RNA. Comparison of the RNA-free and -bound forms of TruB reveals that this enzyme undergoes significant conformational changes on binding to its substrate. These conformational changes include the ordering of the "thumb loop," which binds right into the RNA hairpin loop, and a 10 degree hinge movement of the C-terminal domain. Along with the result of docking experiments performed on apo TruB, we conclude that TruB recognizes its RNA substrate through a combination of rigid docking and induced fit, with TruB first rigidly binding to its target and then maximizing the interaction by induced fit.


    Organizational Affiliation

    Department of Biophysics and Biochemistry, University of California, San Francisco, CA 94143, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
tRNA pseudouridine synthase B A314Escherichia coliMutation(s): 0 
Gene Names: truB
EC: 4.2.1.70 (PDB Primary Data), 5.4.99.25 (UniProt)
Find proteins for P60340 (Escherichia coli (strain K12))
Explore P60340 
Go to UniProtKB:  P60340
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.228 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.03α = 90
b = 71.01β = 117.87
c = 48.67γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-11-04
    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: 2018-02-07
    Changes: Experimental preparation