Sorry for the posting the question.
I have solved the problem. Actually the residues names were not of standard type.

Bla


On Wed, Feb 25, 2009 at 12:37 PM, Bala subramanian <bala.biophysics@gmail.com> wrote:
The slab representation of nucleic acid under Depiction is not working. I made the following settings

show backbone as atoms/bonds, show sugar as atoms/bonds, show base as slab. But the representation is not displayed on the screen.

What could be the reason. I myself have used it before and i am not aware why this happens now.

Regards,
Bala