def binding_site_in_probis(binding_site):
    """
    Get ProBis command to select binding site.
    """
    
    probis_command = (
        f':A and ('
        f'{",".join([str(i) for i in binding_site.sort_values("residue_id").residue_id.to_list()])})'
    )
    
    return probis_command