Hi all, I am building a cyclic peptide with a D amino acid in the middle. First, how can I connect the N and C termini of the peptide and make it a peptide bond? Second, how do I make the PHE to a D amino acid? I know there is a library of D-Phenylalanine in mon_lib.cif, but the code for that is PHE-D? I cannot use 5 letters for the residure, can I?
Thanks. -- Jianghai
