3TUO

Crystal structure of N-terminal domain of DNA-binding protein satb1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.161 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The structural basis for the oligomerization of the N-terminal domain of SATB1

Wang, Z.Yang, X.Chu, X.Zhang, J.Zhou, H.Shen, Y.Long, J.

(2012) Nucleic Acids Res 40: 4193-4202

  • DOI: 10.1093/nar/gkr1284
  • Primary Citation of Related Structures:  
    3TUO

  • PubMed Abstract: 
  • Special AT-rich sequence-binding protein 1 (SATB1) is a global chromatin organizer and gene expression regulator essential for T-cell development and breast cancer tumor growth and metastasis. The oligomerization of the N-terminal domain of SATB1 is critical for its biological function ...

    Special AT-rich sequence-binding protein 1 (SATB1) is a global chromatin organizer and gene expression regulator essential for T-cell development and breast cancer tumor growth and metastasis. The oligomerization of the N-terminal domain of SATB1 is critical for its biological function. We determined the crystal structure of the N-terminal domain of SATB1. Surprisingly, this domain resembles a ubiquitin domain instead of the previously proposed PDZ domain. Our results also reveal that SATB1 can form a tetramer through its N-terminal domain. The tetramerization of SATB1 plays an essential role in its binding to highly specialized DNA sequences. Furthermore, isothermal titration calorimetry results indicate that the SATB1 tetramer can bind simultaneously to two DNA targets. Based on these results, we propose a molecular model whereby SATB1 regulates the expression of multiple genes both locally and at a distance.


    Organizational Affiliation

    State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-binding protein SATB1A, B, C, D105Homo sapiensMutation(s): 0 
Gene Names: SATB1
UniProt & NIH Common Fund Data Resources
Find proteins for Q01826 (Homo sapiens)
Explore Q01826 
Go to UniProtKB:  Q01826
PHAROS:  Q01826
GTEx:  ENSG00000182568 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ01826
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.161 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.895α = 90
b = 71.027β = 90
c = 153.763γ = 90
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-02-01
    Type: Initial release
  • Version 1.1: 2013-06-26
    Changes: Database references