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Báo cáo khoa học: Functional implications of pigments bound to a cyanobacterial cytochrome b6f complex
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A highly purified cytochromeb6f complex from the cyanobacterium Syn-echocystissp. PCC 6803 selectively binds one chlorophyll a and one caro-tenoid in analogy to the recent published structure from two other b6 f complexes. The unknown function of these pigments was elucidated by spectroscopy and site-directed mutagenesis. Low-temperature redox differ-ence spectroscopy showed red shifts in the chlorophyll and carotenoid spec-tra upon reduction of cytochrome b6, which indicates coupling of these pigments with the heme groups and thereby with the electron transport....
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