Hi Evan When it asks you to click an atom, click the main-chain N (nothing else!). I had this problem - took me a while to work it out!
Cheers -- Ian On Thu, Jul 30, 2009 at 7:44 PM, Evan Kantrowitz <[email protected]>wrote: > Hi All, > > I am having problems rotating about the chi angles of an unnatural amino > acid that is in > my structure. I have modified the .cif file as indicated below > > _chem_comp_tor.period > HCE chi1 N CA CB CG 175.000 20.000 3 > HCE chi2 CA CB CG C4 175.000 20.000 3 > HCE chi3 CB CG C4 C9 175.000 20.000 2 > > If I go into Edit Chi angles mode, Coot recognizes the chi1-3 no problem. > However, if I > rotate the chi1, or chi2 the section towards the backbone rotates and > separates (eg the > peptide bonds on either side break). Is there somewhere else I need to do > in order to > indicate to Coot that this is a amino acid linked into the structure and > not a ligand? Any > help would be appreciated. >
