. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. 492 APPENDIX. 400 500 600 650 Wavelength (mu Fig. 8. Rps. spheroides cytochrome b ferro- and ferri-, absolute spectra (concentration and pH of cytochrome not stated) (6). Re- produced by permission of Biochimica et Biophysica Acta. entity, best detectable from the action spectrum of the relief of carbon monoxide inhibition of oxygen uptake by intact bacterial cells (21). Taylor and Horio concluded from the close similarity between such an action spectrum determined with R. rubriim and the absorption spec- trum of R. rubrum CO-
. Bacterial photosynthesis. Bacteria -- Physiology; Photosynthesis. 492 APPENDIX. 400 500 600 650 Wavelength (mu Fig. 8. Rps. spheroides cytochrome b ferro- and ferri-, absolute spectra (concentration and pH of cytochrome not stated) (6). Re- produced by permission of Biochimica et Biophysica Acta. entity, best detectable from the action spectrum of the relief of carbon monoxide inhibition of oxygen uptake by intact bacterial cells (21). Taylor and Horio concluded from the close similarity between such an action spectrum determined with R. rubriim and the absorption spec- trum of R. rubrum CO-ferro-cytochromoid C complex that the two cytochrome types were probably identical (22), It would be of interest to test the obligate photoanaerobe C//rowa^;«;«inthis way to determine if Chromatium cytochromoid C could mimic cytochrome o properties. Cytochrome o activity is widespread among bacteria, including pur- ple bacteria, and deserves intensive study. Properties of h-type cytochromes. Cytochromes of the b type have been detected in intact cells of photosynthetic bacteria and have been implicated in light-induced electron transfer processes (12,18), Both cells and chromatophore preparations of Rps. palustris and Rps. spheroides shov/ a clearly. 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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