>sp|P0A802|RPOZ_ECO57 DNA-directed RNA polymerase subunit omega OS=Escherichia coli O157:H7 GN=rpoZ MARVTVQDAVEKIGNRFDLVLVAARRARQMQVGGKDPLVPEENDKTTVIALREIEEGLIN NQILDVRERQEQQEQEAAELQAVTAIAEGRR