def write_flaggelin_db_fasta(df, fasta_name = "flagellin_db.fasta"):
	"""
	Creates a fasta file from a Dataframe

	Parameters
	----------
	df : Pandas DataFrame
		This will be the DataFrame output from construct_reference_flagellin_dataframe
	fasta_name : str
		Name of the output fasta file

	Returns
	-------
	fasta_name : str

	Note
	----
	Write file to working directory 
	"""
	with open(fasta_name, 'w') as oh:
		for i,r in df.iterrows():
			oh.write(f">{r['Accession']}\n{r['seq']}\n")
	return fasta_name