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BIO NMDCAT Cytoplasmic Organelles
nmdcat.online July 4, 2026

68. The structural layout of the mitochondrial Fo​F1​ ATP synthase dictates that the actual mechanical rotation driving ATP generation takes place within the

A. Outer membrane anchor ring
B. Central gamma subunit stalk relative to the catalytic alpha-beta ring
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C. Soluble space of the intermembrane cavity
D. Cardiolipin-rich domains of the outer boundary

📝 Explanation

Proton flux through the Fo​ base forces the central gamma asymmetric shaft to spin inside the static α3​β3​ hexamer of the F1​ head, inducing conformational changes that forge ATP.

📖 Additional Information

  • Outer membrane anchor ring
  • Central gamma subunit stalk relative to the catalytic alpha-beta ring
  • Soluble space of the intermembrane cavity
  • Cardiolipin-rich domains of the outer boundary

Proton flux through the Fo​ base forces the central gamma asymmetric shaft to spin inside the static α3​β3​ hexamer of the F1​ head, inducing conformational changes that forge ATP.

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