Hi Xiang-Jun,
In using blocview I know that the radius of the backbone tube which traces the phosphate atoms can be changed in the last line of the $X3DNA/config/col_chain.dat file.
Nonetheless I would also like to change the radius of the sticks representing the sugar-phosphate backbone bonds.
I can do this manually by altering the resulting .r3d files, say, if one of these bond specifications as a cylinder in raster3D is:
3
-10.965 -18.757 -1.704 0.160 -9.568 -18.592 -1.909 0.160 1.000 1.000 0.000
I can change the 0.160 value in the fourth and eight fields to whichever radius I want.
I was wondering if there's a file where this parameter can be changed in an easier way.
Thanks,
Mauricio