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Cytochrome c oxidase
in the oxidized (2occ) and reduced state (1ocr) from Bos taurus
(bovine) with particular emphasis on possible H+ and
water channels
  - What structural elements
  are present in the protein?
  
- Which functional groups on
  the indicated residues are most likely to participate in H+
  pumping?
  
- Is there sufficient room
  for water to exit through the suggested channel?
  
- What changes have occurred
  upon oxidation-reduction?
Yoshikawa, S., K. Shinzawa-Itoh, R.
Nakashima, R. Yaono, E. Yamashita, N. Inoue, M. Yao, M. J. Fei,
C. P. Libeu, T. Mizushima, H. Yamaguchi, T. Tomizaki, and T. Tsukihara. 1998. Redox-coupled crystal structural changes
in bovine heart cytochrome c oxidase. Science 280:1723-1729.
  
    | Cytochrome c oxidase (2occ)
      oxidized | Cytochrome c oxidase (1ocr)
      reduced | 
 
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