1mhd
From Proteopedia
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| , resolution 2.8Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , | ||||||
| Gene: | SMAD (Homo sapiens) | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF A SMAD MH1 DOMAIN BOUND TO DNA
Overview
The Smad family of proteins, which are frequently targeted by tumorigenic mutations in cancer, mediate TGF-beta signaling from cell membrane to nucleus. The crystal structure of a Smad3 MH1 domain bound to an optimal DNA sequence determined at 2.8 A resolution reveals a novel DNA-binding motif. In the crystals, base-specific DNA recognition is provided exclusively by a conserved 11-residue beta hairpin that is embedded in the major groove of DNA. A surface loop region, to which tumorigenic mutations map, has been identified as a functional surface important for Smad activity. This structure establishes a framework for understanding how Smad proteins may act in concert with other transcription factors in the regulation of TGF-beta-responsive genes.
About this Structure
1MHD is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Crystal structure of a Smad MH1 domain bound to DNA: insights on DNA binding in TGF-beta signaling., Shi Y, Wang YF, Jayaraman L, Yang H, Massague J, Pavletich NP, Cell. 1998 Sep 4;94(5):585-94. PMID:9741623
Page seeded by OCA on Sun Mar 30 22:16:04 2008
