The three-dimensional structure of a TATA box-binding protein (TBP) from Arabidopsis thaliana complexed with a fourteen base pair oligonucleotide bearing the Adenovirus major late promoter TATA element has been refined at 1.9 Å resolution, giving a final crystallographic R-factor of 19.4%. Binding of the monomeric, saddle-shaped α/β protein induces an unprecedented conformational change in the DNA. A detailed structural and functional analysis of this unusual protein-DNA complex is presented, with particular emphasis on the mechanisms of DNA deformation, TATA element recognition, and preinitiation complex assembly.
All Science Journal Classification (ASJC) codes
- Structural Biology