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 2.0 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
  • Primary Citation of Related Structures:  
    5AGQ

  • 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 interaction of the TAM (TIP5/ARBP/MBD) domain of TIP5 with noncoding RNA, which targets NoRC to specific genomic loci ...

    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 sattler@helmholtz-muenchen.de.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BROMODOMAIN ADJACENT TO ZINC FINGER DOMAIN PROTEIN 2AA113Homo sapiensMutation(s): 0 
Gene Names: BAZ2AKIAA0314TIP5
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UIF9 (Homo sapiens)
Explore Q9UIF9 
Go to UniProtKB:  Q9UIF9
PHAROS:  Q9UIF9
Entity Groups  
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UniProt GroupQ9UIF9
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

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

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-05-06
    Type: Initial release
  • Version 1.1: 2015-05-13
    Changes: Database references
  • Version 1.2: 2015-06-10
    Changes: Database references
  • Version 2.0: 2019-10-23
    Changes: Atomic model, Data collection, Other