Download MendeleyCrystal structure of the ubiquitin-like domain-CUT repeat-like tandem of special AT-rich sequence binding protein 1 (SATB1) reveals a coordinating DNA-binding mechanism.
Wang, Z., Yang, X., Guo, S., Yang, Y., Su, X.C., Shen, Y., Long, J.(2014) J Biol Chem 289: 27376-27385
- PubMed: 25124042
- DOI: https://doi.org/10.1074/jbc.M114.562314
- Primary Citation of Related Structures:
4Q2J - PubMed Abstract:
SATB1 is essential for T-cell development and growth and metastasis of multitype tumors and acts as a global chromatin organizer and gene expression regulator. The DNA binding ability of SATB1 plays vital roles in its various biological functions. We report the crystal structure of the N-terminal module of SATB1. Interestingly, this module contains a ubiquitin-like domain (ULD) and a CUT repeat-like (CUTL) domain (ULD-CUTL tandem). Detailed biochemical experiments indicate that the N terminus of SATB1 (residues 1-248, SATB1((1-248))), including the extreme 70 N-terminal amino acids, and the ULD-CUTL tandem bind specifically to DNA targets. Our results show that the DNA binding ability of full-length SATB1 requires the contribution of the CUTL domain, as well as the CUT1-CUT2 tandem domain and the homeodomain. These findings may reveal a multiple-domain-coordinated mechanism whereby SATB1 recognizes DNA targets.
Organizational Affiliation:
From the State Key Laboratory of Medicinal Chemical Biology, the College of Life Sciences, and.
