def merge_two_dicts(residue_dict_start, residue_dict_end):
	"""Merge two dictionaries into one.
	
	Parameters
	----------
	residue_dict_start : dict
	residue_dict_end : dict
	
	Returns
	-------
	residue_dict_merged: dict
	"""
	residue_dict_merged = residue_dict_start.copy()
	residue_dict_merged.update(residue_dict_end)
	return residue_dict_merged