[phenixbb] define acetyl-methionine for coot and phenix

I am trying to include a N-terminal acetylated methionine in my model. I replaced my methionine with a AME residue from the pdb data bank and included a link command to connect the C from AME with the N of the second residue. The AME is defined as HETATM. When I try to regularize this structure in Coot it doesn't recognize that the 1. and 2. residue should stay connected. What or how do I need to define this residue or the connection so that I can model in Coot and refine in Phenix? Ursula -- Ursula Schulze-Gahmen, Ph.D. Assistant Researcher UC Berkeley, QB3 356 Stanley Hall #3220 Berkeley, CA 94720-3220