1GZ0

23S RIBOSOMAL RNA G2251 2'O-METHYLTRANSFERASE RLMB


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Structure of the Rlmb 23S Rrna Methyltransferase Reveals a New Methyltransferase Fold with a Unique Knot

Michel, G.Sauve, V.Larocque, R.Li, Y.Matte, A.Cygler, M.

(2002) Structure 10: 1303

  • DOI: 10.1016/s0969-2126(02)00852-3
  • Primary Citation of Related Structures:  
    1GZ0

  • PubMed Abstract: 
  • In Escherichia coli, RlmB catalyzes the methylation of guanosine 2251, a modification conserved in the peptidyltransferase domain of 23S rRNA. The crystal structure of this 2'O-methyltransferase has been determined at 2.5 A resolution. RlmB consists ...

    In Escherichia coli, RlmB catalyzes the methylation of guanosine 2251, a modification conserved in the peptidyltransferase domain of 23S rRNA. The crystal structure of this 2'O-methyltransferase has been determined at 2.5 A resolution. RlmB consists of an N-terminal domain connected by a flexible extended linker to a catalytic C-terminal domain and forms a dimer in solution. The C-terminal domain displays a divergent methyltransferase fold with a unique knotted region, and lacks the classic AdoMet binding site features. The N-terminal domain is similar to ribosomal proteins L7 and L30, suggesting a role in 23S rRNA recognition. The conserved residues in this novel family of 2'O-methyltransferases cluster in the knotted region, suggesting the location of the catalytic and AdoMet binding sites.


    Organizational Affiliation

    Biotechnology Research Institute, National Research Council of Canada and Montreal Joint Centre for Structural Biology, Montreal, Quebec, Canada.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HYPOTHETICAL TRNA/RRNA METHYLTRANSFERASE YJFHABCDEFGH253Escherichia coliMutation(s): 0 
EC: 2.1.1 (PDB Primary Data), 2.1.1.185 (UniProt)
Find proteins for P63177 (Escherichia coli (strain K12))
Explore P63177 
Go to UniProtKB:  P63177
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,B,C,D,E,F,G,HL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.231 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.478α = 90
b = 132.288β = 96.4
c = 90.71γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2002-05-03 
  • Released Date: 2002-10-17 
  • Deposition Author(s): Michel, G., Cygler, M.

Revision History 

  • Version 1.0: 2002-10-17
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance