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In the mid 1980s, it was observed that photosynthesis could still occur in the absence of the diffusible electron carrier
cytochrome c
2 in the purple non-sulfur facultative phototrophic bacterium Rhodobacter capsulatus. This serendipic finding led to the discovery of a novel class of membrane-anchored electron carrier cytochromes and their
associated electron transfer pathways. Studies of cytochrome c
y of R. capsulatus (and its homologues in other species) have modified the previous dogma of electron transfer between photosynthetic and respiratory
membrane protein complexes with a new paradigm, in which these proteins and their electron carriers can form `hard-wired'
structural super-complexes. Here, we reminisce on the early days of this discovery, its impacts on our understanding of cellular
energy transduction pathways and the physiological roles played by the electron carrier cytochromes c, and discuss the current knowledge and emerging future challenges of this field.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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Beatty JT 《Photosynthesis research》2002,73(1-3):109-114
This contribution gives a brief survey of the short history since the discovery of the aerobic phototrophic bacteria to focus
on a general evolutionary scenario. Most of the citations are of reviews that have covered the earlier literature and to which
the reader is directed at appropriate places in the following text. The data summarized in these reviews are supplemented
with information from recent or otherwise key primary publications in order to support a synthesis that addresses vexing questions
about bacteria containing photosynthetic pigment-protein complexes, but which are incapable of growth with light as the sole,
or even the major source of energy.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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