Dear Damien, Sorry, Chimera does not have automated methods for building all-atom models from chain traces, either protein or DNA. Chimera's Build Structure tool (under Tools... Structure Editing) enables manual, step-by-step building, but it is not guided by an input backbone trace, and it would be far too tedious for such long chains anyway. I haven't done much building in other programs, but I try to keep track of useful web servers. For protein CA traces, there is a Maxsprout server, but for nucleic acid building, I only know of one web server (make-na) and I believe it just builds the whole thing from scratch and cannot be guided by a chain trace. <http://structure.usc.edu/make-na/> <http://www.ebi.ac.uk/Tools/maxsprout/> Sorry I couldn't help more -- maybe someone else on the list will know of a suitable program. Elaine ----- Elaine C. Meng, Ph.D. UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab Department of Pharmaceutical Chemistry University of California, San Francisco On Apr 13, 2011, at 9:46 AM, Damien Larivière wrote:
Dear all, Here is a PDB file of a DNA portion. It contains only the atoms of the backbone chain trace. Is there a way to rebuild the remaining parts (sugar,...)? Many thanks for your help Damien <DNAdeformed.pdb>_______________________________________________ Chimera-users mailing list Chimera-users@cgl.ucsf.edu http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users