1MT4

Structure of 23S ribosomal RNA hairpin 35


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 115 
  • Conformers Submitted: 17 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of 23S rRNA hairpin 35 and its interaction with the tylosin-resistance methyltransferase RlmAII

Lebars, I.Yoshizawa, S.Stenholm, A.R.Guittet, E.Douthwaite, S.Fourmy, D.

(2003) Embo J. 22: 183-192

  • DOI: 10.1093/emboj/cdg022

  • PubMed Abstract: 
  • The bacterial rRNA methyltransferase RlmAII (formerly TlrB) contributes to resistance against tylosin-like 16-membered ring macrolide antibiotics. RlmAII was originally discovered in the tylosin-producer Streptomyces fradiae, and members of this subc ...

    The bacterial rRNA methyltransferase RlmAII (formerly TlrB) contributes to resistance against tylosin-like 16-membered ring macrolide antibiotics. RlmAII was originally discovered in the tylosin-producer Streptomyces fradiae, and members of this subclass of methyltransferases have subsequently been found in other Gram-positive bacteria, including Streptococcus pneumoniae. In all cases, RlmAII methylates 23S rRNA at nucleotide G748, which is situated in a stem-loop (hairpin 35) at the macrolide binding site of the ribosome. The conformation of hairpin 35 recognized by RlmAII is shown here by NMR spectroscopy to resemble the anticodon loop of tRNA. The loop folds independently of the rest of the 23S rRNA, and is stabilized by a non-canonical G-A pair and a U-turn motif, rendering G748 accessible. Binding of S.pneumoniae RlmAII induces changes in NMR signals at specific nucleotides that are involved in the methyltransferase-RNA interaction. The conformation of hairpin 35 that interacts with RlmAII is radically different from the structure this hairpin adopts within the 50S subunit. This indicates that the hairpin undergoes major structural rearrangement upon interaction with ribosomal proteins during 50S assembly.


    Organizational Affiliation

    Laboratoire de RMN, ICSN-CNRS, 1 ave de la terrasse, 91190 Gif-sur-Yvette, France.




Macromolecules

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Entity ID: 1
MoleculeChainsLengthOrganism
23S ribosomal Hairpin 35A24N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 115 
  • Conformers Submitted: 17 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-14
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance