Hello there, I have a question regarding MODELLER in Chimera and the ability of chimera to adjust the model using some inbuilt features quickly(i.e. automatically, instead of interactively) Firstly, I am trying to model the "holo" form of an enzyme with known apo-form structure. I did this usinig the two independent domains of the apo form as a template (in a bid to get the domains accurate) and for the holo-form closure I used a very similar homologue that has been solved in the holo form. The results were good and I got a decent model that had closed up like the homolog. However, I noticed that in the model a lot of the sidechains have not been modelled with the right rotamer. This is odd, as I gave it the two independent domains as a template, so it had all the information it needed to get that perfectly right. Either way, this means, I need to manually "copy" the rotamers from the apo form onto the "holo model", which is time consuming. I know from the homolog that only two or three residues in the active site change rotamer upon apo-holo conformational change. So, I just want an easy way to edit the rotamers in the holo-model to copy the rotamers of the apo-form for all residues. Is there an easy way to do this, is it possible to this with a script? I have no idea how to script, mind you! Ahir