DNA A-tract Bending

R. Stefl, H. Wu, S. Ravindranathan, V. Sklenár, and J. Feigon: “DNA A-tract bending in three dimensions: Solving the dA4T4 versus dT4A4 conundrum”, Proc. Natl. Acad. Sci. USA, 101, 1177-1182 (2004). [abstract]

PDB Codes: 1RVH; 1RVI

Superposition of the nine best structures of A4T4 (left) and T4A4 (right). The minor groove of the A-tracts is shown in front, and a ribbon is fitted to the phosphate atoms to highlight the differences in minor groove widths.