The output is to both a graphical display and to a text file with the default name 'banana.profile'. The data file consists of three columns separated by blanks or tab characters. The first column is the sequence. The second column is the local bending. The third is the curvature.
Data files It reads in angles files for the twist, roll and tilt angles.
For this reason, they may be the most objective and unbiased parameters of all. Satchwell, Drew and Travers studied the positioning of DNA sequences wrappped around nucleosome cores, and in closed circles of double-helical DNA of comparable size. From the sequence data they calculated a fractional preference of each base pair triplet for a position 'facing out', or with the major groove on the concave side of the curved helix. Chenging the maximum roll value will scale the entire profile up or down proportionately, but will not change the shape of the profile. Peaks will remain peaks, and valleys, valleys.