text: import pandas as pd
  
  
  def call(complexes: pd.DataFrame) -> pd.DataFrame:
      complexes.rename(index=str, columns={'uniprot_1': 'protein_1', 'uniprot_2': 'protein_2', 'uniprot_3': 'protein_3',
                                           'uniprot_4': 'protein_4'},
                       inplace=True)
  
      return complexes
  