. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. BACTERIOPHEOPHYTIN-CONTAINING PARTICLES 117. 400 600 800 m/j Fig. 2. Upper curve: Absorption spectrum of bacteriopheophytin pre- pared from purified bacteriochlorophyll by acidification with aqueous acetic acid in acetone. Resulting bacteriopheophytin extracted with ethyl ether. Spectrum measured in dry ethyl ether after removal of acetic acid and acetone. Lower curve: Spectrum of B794 extract in dry ethyl ether. An additional observation points to the possible identity of the material giving rise to the 800 niju peak in "
. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. BACTERIOPHEOPHYTIN-CONTAINING PARTICLES 117. 400 600 800 m/j Fig. 2. Upper curve: Absorption spectrum of bacteriopheophytin pre- pared from purified bacteriochlorophyll by acidification with aqueous acetic acid in acetone. Resulting bacteriopheophytin extracted with ethyl ether. Spectrum measured in dry ethyl ether after removal of acetic acid and acetone. Lower curve: Spectrum of B794 extract in dry ethyl ether. An additional observation points to the possible identity of the material giving rise to the 800 niju peak in "normal" chromatophores and the 794 m/i peak in the "abnormal" particles: the treatment of both types of preparations with dilute KOH (pH 10) leads to a shift of the 800 mju peak or of the 794 m/i peak to 754 m/i; the position of the latter peak is identical in the two preparations. Work is in progress to establish a difference spectrum between "normal" chromatophores and B794 particles in an effort to obtain an approximation of the in situ absorption spectrum of Bsso alone. Also, we hope to be able to separate particles containing only the 880 mju peak and thereby obtain the in situ spectrum of Bgso Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Symposium on Bacterial Photosynthesis (1963 : Yellow Springs, Ohio); Charles F. Kettering Research Laboratory (Yellow Springs, Ohio); Gest, Howard. Yellow Springs, Ohio, Antioch Press
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