The structure of the peripheral stalk of Thermus thermophilus H+-ATPase/synthase.

The crystal structure of the peripheral stalk of the A-type ATPase/synthase (A-ATPase) from Thermus thermophilus reveals a heterodimeric right-handed coiled coil, a protein fold never observed before. Fitting of the stalk structure into the EM density of intact A-ATPase provides the most complete composite model so far.