r=sql_ask_database(conn,f"SELECT structure_id, '_1_', chain_name, '_', CAST(pdb_start AS TEXT), '-', CAST(pdb_end AS TEXT) FROM chain WHERE rfam_acc='{f}';")
filelist=sorted([''.join(list(x))+'.cif'forxinr])
r=sql_ask_database(conn,f"SELECT cm_coord FROM align_column WHERE rfam_acc = '{f}' AND index_ali > 0 ORDER BY index_ali ASC;")