strain_id	description	flag	length
NC_002695.1	Escherichia coli O157:H7 str. Sakai, complete genome	genbank	5498450
NC_002128.1	Escherichia coli O157:H7 str. Sakai plasmid pO157, complete sequence	genbank	92721
NC_002127.1	Escherichia coli O157:H7 str. Sakai plasmid pOSAK1, complete sequence	genbank	3306
