Proton translocation by bacteriorhodopsin and heme-copper oxidases.

@article{Wikstrm1998ProtonTB,
  title={Proton translocation by bacteriorhodopsin and heme-copper oxidases.},
  author={M{\aa}rten Wikstr{\"o}m},
  journal={Current opinion in structural biology},
  year={1998},
  volume={8 4},
  pages={
          480-8
        }
}
Proton translocation is the means by which free energy is conserved from oxygen reduction by the respiratory heme-copper oxidases and from sunlight by bacteriorhodopsin. Three-dimensional structures at atomic resolution of both proteins have aided functional studies of the proton translocation mechanism. A comparison reveals common structural and functional features that may be unique to the primary proton pumps in biology. 

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