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A light-harvesting-reaction center (LH1-RC) core complex has been highly purified from a thermophilic purple sulfur bacterium, Thermochromatium tepidum. The bacteriochlorophyll (BChl) a molecules in the LH1 exhibit a Q y transition at 914 nm, more than 25 nm red-shift from those of its mesophilic counterparts. The LH1-RC complex was isolated in a monomeric form as confirmed by sucrose density...
Although the polypeptides of core light-harvesting complexes (LH1) from many purple nonsulfur bacteria have been well characterized, little information is available on the polypeptides of LH1 from purple sulfur photosynthetic organisms. We present here the results of isolation and characterization of LH1 polypeptides from two purple sulfur bacteria, Thermochromatium (Tch.) tepidum and Allochromatium...
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