Protein translocation: what’s the problem?

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We came together in Leeds to commemorate and celebrate the life and achievements of Prof. Stephen Baldwin. For many years we, together with Sheena Radford and Roman Tuma (colleagues also of the University of Leeds), have worked together on the problem of protein translocation through the essential and ubiquitous Sec system. Inspired and helped by Steve we may finally be making progress. My seminar described our latest hypothesis for the molecular mechanism of protein translocation, supported by results collected in Bristol and Leeds on the tractable bacterial secretion process – commonly known as the Sec system; work that will be published elsewhere. Below is a description of the alternative and contested models for protein translocation that we all have been contemplating for many years. This review will consider their pros and cons.
Original languageEnglish
Pages (from-to)753-759
Number of pages7
JournalBiochemical Society Transactions
Issue number3
Early online date9 Jun 2016
Publication statusPublished - Jun 2016


  • Protein translocation
  • SecY
  • secretion
  • membrane protein complex
  • ATPase
  • energy transduction

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