Hi Alex, AFAIK this should work. Could you save a session just before you would write the PDB file and then use Help->Report a Bug and attach the session so I can investigate? Thanks! --Eric Eric Pettersen UCSF Computer Graphics Lab http://www.cgl.ucsf.edu On Feb 28, 2014, at 12:26 PM, "Stern, Alexander Thomas" wrote:
Hello,
I am attempting to attach a covalent (cysteine modifying) ligand to my protein, and I will later be optimizing/minimizing in another program.
I opened my structure in Chimera, loaded the ligands, moved them roughly into place, and merged the models. I then added the bonds and exported the file as a pdb. Upon reopening that very same pdb in Chimera, the bonds I made are gone (however, the ligands are in the position I placed them in). Curious to understand what I am doing incorrectly here.
Alex