2ODG

Complex of barrier-to-autointegration factor and LEM-domain of emerin


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 180 
  • Conformers Submitted: 
  • Selection Criteria: RESTRAINED REGULARIZED MEAN STRUCTURE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Solution NMR Structure of the Barrier-to-Autointegration Factor-Emerin Complex.

Cai, M.Huang, Y.Suh, J.Y.Louis, J.M.Ghirlando, R.Craigie, R.Clore, G.M.

(2007) J Biol Chem 282: 14525-14535

  • DOI: 10.1074/jbc.M700576200
  • Primary Citation of Related Structures:  
    2ODC, 2ODG

  • PubMed Abstract: 
  • The barrier-to-autointegration factor BAF binds to the LEM domain (Em(LEM)) of the nuclear envelope protein emerin and plays an essential role in the nuclear architecture of metazoan cells. In addition, the BAF(2) dimer bridges and compacts double-stranded DNA nonspecifically via two symmetry-related DNA binding sites ...

    The barrier-to-autointegration factor BAF binds to the LEM domain (Em(LEM)) of the nuclear envelope protein emerin and plays an essential role in the nuclear architecture of metazoan cells. In addition, the BAF(2) dimer bridges and compacts double-stranded DNA nonspecifically via two symmetry-related DNA binding sites. In this article we present biophysical and structural studies on a complex of BAF(2) and Em(LEM). Light scattering, analytical ultracentrifugation, and NMR indicate a stoichiometry of one molecule of Em(LEM) bound per BAF(2) dimer. The equilibrium dissociation constant (K(d)) for the interaction of the BAF(2) dimer and Em(LEM), determined by isothermal titration calorimetry, is 0.59 +/- 0.03 microm. Z-exchange spectroscopy between corresponding cross-peaks of the magnetically non-equivalent subunits of the BAF(2) dimer in the complex yields a dissociation rate constant of 78 +/- 2s(-1). The solution NMR structure of the BAF(2)-Em(LEM) complex reveals that the LEM and DNA binding sites on BAF(2) are non-overlapping and that both subunits of the BAF(2) dimer contribute approximately equally to the Em(LEM) binding site. The relevance of the implications of the structural and biophysical data on the complex in the context of the interaction between the BAF(2) dimer and Em(LEM) at the nuclear envelope is discussed.


    Organizational Affiliation

    Laboratories of Chemical Physics and Molecular Biology, NIDDK, National Institutes of Health, Bethesda, MD 20892-0520, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Barrier-to-autointegration factorA, B89Homo sapiensMutation(s): 0 
Gene Names: BANF1BAFBCRG1
Find proteins for O75531 (Homo sapiens)
Explore O75531 
Go to UniProtKB:  O75531
NIH Common Fund Data Resources
PHAROS:  O75531
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
EmerinC47Homo sapiensMutation(s): 0 
Gene Names: EMDEDMDSTA
Find proteins for P50402 (Homo sapiens)
Explore P50402 
Go to UniProtKB:  P50402
NIH Common Fund Data Resources
PHAROS:  P50402
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 180 
  • Conformers Submitted: 
  • Selection Criteria: RESTRAINED REGULARIZED MEAN STRUCTURE 
  • OLDERADO: 2ODG Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2006-12-22 
  • Released Date: 2007-03-13 
  • Deposition Author(s): Clore, G.M., Cai, M.

Revision History  (Full details and data files)

  • Version 1.0: 2007-03-13
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance