Dear PDB-l, Ligand Expo (http://ligand-expo.rcsb.org) will be down during the month of January 2023. Requests to this service will return a 410 http error code (“Gone”) and a message to contact RCSB PDB with any questions. Users can access CCD data in mmCIF format at https://files.wwpdb.org/pub/pdb/refdata/chem_comp/ hashed with the last character position, e.g., https://files.wwpdb.org/pub/pdb/refdata/chem_comp/P/TRP/ <https://files.wwpdb.org/pub/pdb/refdata/chem_comp/P/TRP/> -- Regards, Jasmine =========================================================== Jasmine Young, Ph.D. Biocuration Team Lead RCSB Protein Data Bank Research Professor Institute for Quantitative Biomedicine Rutgers, The State University of New Jersey 174 Frelinghuysen Rd Piscataway, NJ 08854-8087 Email:jasmine@rcsb.rutgers.edu Phone: (848)445-0103 ext 4920 Fax: (732)445-4320 ===========================================================