On 27/01/13 12:18, LISA wrote: > Hi all, > I am refining a protein-DNA complex. But when I adjust the position of > DNA by "edit chi angels", the phosphate does not move. Only the sugar > and base move > Here is partial DNA pdb. Is there any format problem of my pdb or I > miss some library? Hello Lisa, Recent Coots use PDB v3 names for nucleotide - which means, for the most part, using primes rather than star. HTH, Paul.