SecA – a new twist in the tail

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A paper published in this issue of the Journal of Bacteriology (D. Huber, M. Jamshad, R. Hanmer, D. Schibich, K. Döring, I. Marcomini, G. Kramer, and B. Bukau, J Bacteriol 199:e0622-16, 2017, provides us with a timely reminder that all is not as clear as we had previously thought in the general bacterial secretion system. The paper describes a new mode of secretion through the Sec system—“uncoupled cotranslocation”—for the passage of proteins across the bacterial inner membrane and suggests that we might rethink the nature and mechanism of the targeting and transport steps toward protein export.
Original languageEnglish
Number of pages5
JournalJournal of Bacteriology
Issue number2
Early online date1 Jan 2017
Publication statusPublished - 1 Jan 2017


  • Protein translocation
  • SecY complex
  • bacterial secretion
  • ATPase
  • protein targeting


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