[Chimera-users] ribbons of nucleic acids

Hello, I am wondering how to adjust the ribbons of nucleic acids so that they follow the path of the phosphates or the sugars, anything but the averaged path they have now. I want to show the backbone as a ribbon with bases projecting out, but now some bases float about the backbone. Thanks for any help. Ann Ann Mullin Research Scientist Cell and Molecular Biology Dept. Tulane University New Orleans, LA 70118-5698 504-865-6742 (Ph) 504-865-6785 (FAX) amullin@tulane.edu