Cartoons view of the TATA-binding protein, bound to DNA in a spacefilling view
This view highlights the curved anti-parallel β-sheet, which has 4 α-helices on one face. This is a typical α+β arrangement.
This view highlights the pseudo-symmetrical nature of the protein. The red half is structurally very similar to the blue half. But they are different in that one binds the TATA end of the DNA.
1tgh (PDB)
Juo, Z. S., Chiu, T. K., Leiberman, P. M., Baikalov, I., Berk, A. J., Dickerson, R. E.: How proteins recognize the TATA box. J Mol Biol 261 pp. 239 (1996) (PubMed)