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Biophysical Journal 56: 281-283 (1989)
© 1989 the Biophysical Society
Institute of Biophysics, Biological Research Center, Szeged, Hungary
ABSTRACT
The electric dichroism of purple and cation-depleted (blue) membrane was measured in a.c. electric fields at saturation. A decrease of 5.5° in the direction of the chromophore transition moment with respect to the membrane normal was found upon removal of cations from purple membrane.
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