ATP synthase: Subunit-subunit interactions in the stator stalk

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In ATP synthase, proton translocation through the Fo subcomplex and ATP synthesis/hydrolysis in the F1 subcomplex are coupled by subunit rotation. The static, non-rotating portions of F1 and Fo are attached to each other via the peripheral "stator stalk", which has to withstand elastic strain during subunit rotation. In Escherichia coli, the stator stalk consists of subunits b2δ; in other organisms, it has three or four different subunits. Recent advances in this area include affinity measurements between individual components of the stator stalk as well as a detailed analysis of the interaction between subunit δ (or its mitochondrial counterpart, the oligomycin-sensitivity conferring protein, OSCP) and F1. The current status of our knowledge of the structure of the stator stalk and of the interactions between its subunits will be discussed in this review.

Original languageEnglish
Pages (from-to)1162-1170
Number of pages9
JournalBiochimica et Biophysica Acta - Bioenergetics
Issue number9-10
StatePublished - Sep 2006


  • ATP synthase
  • F-ATPase
  • Peripheral stalk
  • Stator
  • Stator stalk


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