Electrically-Induced Memory Effect in Bacteriorhodopsin

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概要

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• Absorption spectrum of bacteriorhodopsin under an electric field was investigated. We found that the change driven by the field does not disappear even after removing the field at relative humidity below 5% . Furthermore, we found that the state induced by the electric field returns to the initial state with light illumination. We examined the effect of humidity on this phenomenon. As for a retinylidene chromophore, we suppose the following phenomenon may occur. The existence of water molecules promotes the hydration of the nitrogen atom in the retinylidene chromophore, and the pi-electrons in the chromophore are attracted to the nitrogen atom. Such a change is considered to be one cause that makes the electrically-induced state unstable at high relative humidity.

• 1995-04-15

著者

• Okazaki Choichiro

  Hitachi Central Research Laboratory

• Takeda Kazuo

  Hitachi Central Research Laboratory

関連論文

• Optical Memory Effect of Bacteriorhodopsin under an Electric Field
• Electrically-Induced Memory Effect in Bacteriorhodopsin
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