Dear all, I'm refining a structure which has both N-linked and O-linked glycosylation. I use Phenix to do the refinement. It works well for the N-linked NAG. I defined the link as the following: apply_cif_link { data_link = "NAG-ASN" residue_selection_1 = "chain A and resname NAG and resid 701" residue_selection_2 = "chain A and resname ASN and resid 518" } But it doesn't work when I defined the fucose-threonine link as the similar way: apply_cif_link { data_link = "FUC-THR" residue_selection_1 = "chain A and resname FUC and resid 801" residue_selection_2 = "chain A and resname THR and resid 596" } The error message is "missing CIF link: data_link_FUC-THR". Does anyone have the cif link file of FUC-THR? Thanks a lot! Qiang The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.