On 05/12/2018 00:44, Jungwook Kim wrote: > I am about to refine a structure containing an N-terminal pyruvoyl residue (naturally derived from serine), > which is commonly seen in many decarboxylases. File -> Get Monomer -> PYR Edit -> Merge Molecules -> [Merge the PYR molecule into your protein molecule] Renumber the PYR residue and change the chain-id as needed Extensions -> Modules -> CCP4 -> CCP4 -> Make a Link via Acedrg Delete Atom: O2 -> Pick 2 Atoms -> Click on C1 of PYR and N of your N-terminal residue [*] This will generate a dictionary that should be usable in Refmac and Coot. Paul. [*] I am guessing that this is the link that you want to make, I didn't look it up :-) ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1