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Long-Wavelength-Absorbing Forms of Bacteriochlorophyll a in Solutions of Triton X-100

J. Gottstein and H. Scheer
Proceedings of the National Academy of Sciences of the United States of America
Vol. 80, No. 8, [Part 1: Biological Sciences] (Apr. 15, 1983), pp. 2231-2234
Stable URL: http://www.jstor.org/stable/13484
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Long-Wavelength-Absorbing Forms of Bacteriochlorophyll a in Solutions of Triton X-100
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Abstract

At leat three forms of Triton X-100-solubilized bacteriochlorophyll a (BChl a) have been characterized by UV/visible/near-IR absorption and CD spectra. One, absorbing at 770 nm, is similar to a monomeric solution in methanol. The two others have strongly red-shifted absorption peaks (860 nm and 930, 835 nm) and intense and complex CD bands in this region, indicative of strong interaction of at least two and three molecules of BChl a, respectively.

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