Bibby, T.S., Nield, J., Partensky, F. and Barber, J.
Oxyphotobacteria: antenna ring around photosystem I.
Nature, 413, (6856), . (doi:10.1038/35098153).
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The oceanic picoplankton Prochlorococcus - probably the most abundant photosynthetic organism on our planet - can grow at great depths where light intensity is very low. We have found that the chlorophyll-binding proteins in a deep-living strain of this oxyphotobacterium form a ring around a trimer of the photosystem I (PS I) photosynthetic reaction centre, a clever arrangement that maximizes the capture of light energy in such dim conditions.
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