The bacterial Sec-translocase: structure and mechanism - Phil. Trans. R. Soc., 367(1592), p.1016-1028, 2012 .

Most bacterial secretory proteins pass across the cytoplasmic membrane via the translocase, which consists of a protein-conducting channel SecYEG and an ATP-dependent motor protein SecA. The ancillary SecDF membrane protein complex promotes the final stages of translocation. Recent years have seen a major advance in our understanding of the structural and biochemical basis of protein translocation, and this has led to a detailed model of the translocation mechanism.


PROTEIN TRANSLOCATION
MEMBRANE PROTEIN INSERTION
SECY
TRANSLOCON
SECA