Part of the Sec protein translocase complex. Interacts with the SecYEG preprotein conducting channel. SecDF uses the proton motive force (PMF) to complete protein translocation after the ATP-dependent function of SecA (By similarity). Protein translocase subunit SecF SECF_AQUAE secF aq_1602 288 MKQIKFLRLRKAAYGVSALLILISLLSLLFRGLNLGLDFTGGTLYEVKFEKSVDIGKLRKTISSAGIKGFLIQETKEGTFVIKVKTGEPVEKLEDVLKKFGKYELIRKETISGVVSEELQKKAVFAILTALGGILLYLGVRFQPVWGFGAILALAHDVITVLGAYSITQREVNLEVVSAILVVAGYSVADTVVIFDRIRENLRKKKGFTLEEIMDLSINQTLSRTIMTSLTTLVTALTLFILGGYALSNIMFAFVVGVVVGTYSSVFVASAFVLDMQKLFKRGEVQTA