. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. 116 THE BACTERIAL PHOTOCHEMICAL APPARATUS 364 794 880. -Absorption spectrum of "normal", washed chromatophores Fig. 1. from R. ruhrum in M K giycylglycine pH Absorption spectrum of B794 particles (obtained from 2-day-old cultures) after removal of 880 m/i absorbing material by differential centrifu- gation; in M K giycylglycine pH believe this to be an extraction artifact since bacteriopheophytin does not form readily from bacteriochlorophyll even in the presence of dilute acids, and the isolati
. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. 116 THE BACTERIAL PHOTOCHEMICAL APPARATUS 364 794 880. -Absorption spectrum of "normal", washed chromatophores Fig. 1. from R. ruhrum in M K giycylglycine pH Absorption spectrum of B794 particles (obtained from 2-day-old cultures) after removal of 880 m/i absorbing material by differential centrifu- gation; in M K giycylglycine pH believe this to be an extraction artifact since bacteriopheophytin does not form readily from bacteriochlorophyll even in the presence of dilute acids, and the isolation procedures have been carried out under con- ditions which should prevent the accumulation of acids in the extrac- tion mixtures. The cause for the discrepancy in the position of the in situ absorp- tion peaks near 800 m^ in the two types of particles may be ascribed to the presence or absence of the BgSO bacteriochlorophyll. The BssQ material has a higher extinction at 800 vafj. than at 794 m/i; thus, in the presence of excess B88O the absorption peak of the presumed bacteriopheophytin would tend to be shifted toward longer wavelengths {, from 794 m^ toward 800 m/i). A more quantitative evaluation of this spectral shift will be 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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