I would like make CCPN understand a glycopeptide consisting of unatural amino acids and carbohydrates. Anyone has any experience with that? In Molecules > Small Compounds I have found building blocks I need, e.g. Dap, NAG. When I want to use them it suggests to download them, but then it says "Chemical compound definition is not available". How could I define these small compounds myself? Is it possible to build up the glycopeptide from them afterwards? Or is it bettter to define the small glycoepptide as one small molecule? If so, how one can do that?
Thanks a lot for any help,