Article
FTIR studies of internal water molecules in the Schiff base region of bacteriorhodopsin.
Biochemistry - 24 May 2005
Shibata Mikihiro, Kandori Hideki
Abstract excerpt
In a light-driven proton pump protein, bacteriorhodopsin (BR), three water molecules participate in a pentagonal cluster that stabilizes an electric quadrupole buried inside the protein. Previously, low-temperature Fourier-transform infrared (FTIR) difference spectra between BR and the K photointermediate in D(2)O revealed six O-D stretches of water in BR at 2690, 2636, 2599, 2323, 2292, and 2171 cm(-)(1), while...
Topics
- Archaeal Proteins
- Arginine
- Aspartic Acid
- Bacteriorhodopsins
- Cytoplasm
- Halobacterium salinarum
- Hydrogen Bonding
- Mutation
- Proton Pumps
- Schiff Bases
- Spectroscopy, Fourier Transform Infrared
- Thermodynamics
- Water
