def display_entry(uni, uni_df, pdb_df):
    """Given a uniID, display the composite pdb, the composite uniprot,
    and the missing regions."""
    uni_df = uni_df[uni_df.SP_PRIMARY.isin([uni])]
    pdb_df = pdb_df[pdb_df.SP_PRIMARY.isin([uni])]
    if len(uni_df.index) < 1:
        print("UniProt ID is not in this data set.")
    else:
        print("        {0}".format(uni_df.iloc[0]['STRUCT']))
        print("\n")
        for i, row in pdb_df.iterrows():
            print("{0}\t{1}".format(row.PDB_CHAIN, row.SEC_STRUCT))
        print("\n")
        print(uni_df.iloc[0]['MISSING'])
    return None