Standard coordinates for a 12 bp double-stranded A-, B- and Z-DNA were created with the Biopolymer Module of the Biosym InsightII software (version 95.0) running on a Silicon Graphics Indigo. Thanks to Bill Primrose.
The structure of the 'Dickerson Dodecamer' was originally reported in:
Drew, H. R., Wing, R. M., Takano, T., Broka, C., Tanaka, S., Itakura, K. & Dickerson, R. E. (1981). Structure of a B-DNA dodecamer: conformation and dynamics. Proc. Natl. Acad. Sci. USA 78, 2179-2183.
and the coordinates were acquired from the Brookhaven Protein Data Bank. The filename is 1BNA.
The structure of yeast tRNAphe was reported in:
Westhof, E., Sundaralingam, M. (1986). Restrained refinement of the monoclinic form of the yeast phenylalanine transfer RNA. Temperature factors and dynamics, coordinated waters, and 4 base-pair propellor twist angles. Biochemistry 25, 4868.
The Brookhaven file name is 1TRA