Comment on

• Structure of the respiratory NADH:ubiquinone oxidoreductase (complex I).

  Grigorieff N. Grigorieff N. Curr Opin Struct Biol. 1999 Aug;9(4):476-83. doi: 10.1016/S0959-440X(99)80067-0. Curr Opin Struct Biol. 1999. PMID: 10449365 Review.
• 'Feeling the pressure': structural insights into a gated mechanosensitive channel.

  Spencer RH, Chang G, Rees DC. Spencer RH, et al. Curr Opin Struct Biol. 1999 Aug;9(4):448-54. doi: 10.1016/S0959-440X(99)80063-3. Curr Opin Struct Biol. 1999. PMID: 10449367 Review.
• Beta-barrel proteins from bacterial outer membranes: structure, function and refolding.

  Buchanan SK. Buchanan SK. Curr Opin Struct Biol. 1999 Aug;9(4):455-61. doi: 10.1016/S0959-440X(99)80064-5. Curr Opin Struct Biol. 1999. PMID: 10449368 Review.
• The structure of bacteriorhodopsin: an emerging consensus.

  Subramaniam S. Subramaniam S. Curr Opin Struct Biol. 1999 Aug;9(4):462-8. doi: 10.1016/S0959-440X(99)80065-7. Curr Opin Struct Biol. 1999. PMID: 10449372 Review.
• Photosystem II.

  Barber J, Kühlbrandt W. Barber J, et al. Curr Opin Struct Biol. 1999 Aug;9(4):469-75. doi: 10.1016/S0959-440X(99)80066-9. Curr Opin Struct Biol. 1999. PMID: 10449373 Review.