strain_id	description	flag	length
NC_011353.1	Escherichia coli O157:H7 str. EC4115, complete sequence	genbank	5572075
NC_011351.1	Escherichia coli O157:H7 str. EC4115 plasmid pEC4115, complete sequence	genbank	37452
NC_011350.1	Escherichia coli O157:H7 str. EC4115 plasmid pO157, complete sequence	genbank	94644
