Biological Assembly 1  

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Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 46633.38 
• Atom Count: 2981 
• Residue Count: 420 
• Unique protein chains: 1

3TUO

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

• DOI: 10.2210/pdb3TUO/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2011-09-17 Released: 2012-02-01 
• Deposition Author(s): Wang, Z., Yang, X., Long, J., Shen, Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.697 Å
• R-Value Free: 0.218 
• R-Value Work: 0.158 

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

• PubMed: 22241778 
• DOI: 10.1093/nar/gkr1284


• 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. 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.

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Organizational Affiliation: 

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

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
DNA-binding protein SATB1	A, B, C, D	105	Homo sapiens	Mutation(s): 0  Gene Names: SATB1
Find proteins for Q01826 (Homo sapiens) Go to Gene View: SATB1 Go to UniProtKB:  Q01826

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.697 Å
• R-Value Free: 0.218 
• R-Value Work: 0.158 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 35.895	α = 90.00
b = 71.027	β = 90.00
c = 153.763	γ = 90.00

Software Package:

Software Name	Purpose
PHENIX	model building
HKL-2000	data scaling
MAR345dtb	data collection
PHENIX	refinement
PHENIX	phasing
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-09-17 
• Released Date: 2012-02-01 
• Deposition Author(s): Wang, Z., Yang, X., Long, J., Shen, Y.

Revision History 

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