Fig. S5.

The P. tetraurelia ATP synthase dimer has a unique curved peripheral stalk. (A) P. tetraurelia ATP synthase dimer with the available atomic models of the bovine ATP synthase (PDB ID codes 2WSS¹³, 2XND¹⁴, and 2CLY¹¹). Side views (B and C) and tilted view (D) of the left monomer in A reveal that the bovine peripheral stalk (red) and the P. tetraurelia peripheral stalk (yellow) exhibit opposite curvatures. (C and D) The bovine peripheral stalk was filtered to 20 Å for better comparison. (Scale bar, 50 nm.)