5AGQ

Solution structure of the TAM domain of human TIP5 BAZ2A involved in epigenetic regulation of rRNA genes


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: BEST ENERGY 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A Novel RNA Binding Surface of the Tam Domain of Tip5/Baz2A Mediates Epigenetic Regulation of Rrna Genes.

Anosova, I.Melnik, S.Tripsianes, K.Kateb, F.Grummt, I.Sattler, M.

(2015) Nucleic Acids Res. 43: 5208

  • DOI: 10.1093/nar/gkv365

  • PubMed Abstract: 
  • The chromatin remodeling complex NoRC, comprising the subunits SNF2h and TIP5/BAZ2A, mediates heterochromatin formation at major clusters of repetitive elements, including rRNA genes, centromeres and telomeres. Association with chromatin requires the ...

    The chromatin remodeling complex NoRC, comprising the subunits SNF2h and TIP5/BAZ2A, mediates heterochromatin formation at major clusters of repetitive elements, including rRNA genes, centromeres and telomeres. Association with chromatin requires the interaction of the TAM (TIP5/ARBP/MBD) domain of TIP5 with noncoding RNA, which targets NoRC to specific genomic loci. Here, we show that the NMR structure of the TAM domain of TIP5 resembles the fold of the MBD domain, found in methyl-CpG binding proteins. However, the TAM domain exhibits an extended MBD fold with unique C-terminal extensions that constitute a novel surface for RNA binding. Mutation of critical amino acids within this surface abolishes RNA binding in vitro and in vivo. Our results explain the distinct binding specificities of TAM and MBD domains to RNA and methylated DNA, respectively, and reveal structural features for the interaction of NoRC with non-coding RNA.


    Organizational Affiliation

    Institute of Structural Biology, Helmholtz Zentrum München, Neuherberg D-85764, Germany Biomolecular NMR and Center for Integrated Protein Science Munich (CIPSM), Department Chemie, Technische Universität München, Garching D-85747, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BROMODOMAIN ADJACENT TO ZINC FINGER DOMAIN PROTEIN 2A
A
113Homo sapiensMutation(s): 0 
Gene Names: BAZ2A (KIAA0314, TIP5)
Find proteins for Q9UIF9 (Homo sapiens)
Go to Gene View: BAZ2A
Go to UniProtKB:  Q9UIF9
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: BEST ENERGY 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2015-05-13
    Type: Database references
  • Version 1.2: 2015-06-10
    Type: Database references