| Literature DB >> 31371578 |
Xiong Pi1, Songhao Zhao2,3, Wenda Wang2, Desheng Liu1, Caizhe Xu2,3, Guangye Han2, Tingyun Kuang4, Sen-Fang Sui5, Jian-Ren Shen4,6.
Abstract
Diatoms play important roles in global primary productivity and biogeochemical cycling of carbon, in part owing to the ability of their photosynthetic apparatus to adapt to rapidly changing light intensity. We report a cryo-electron microscopy structure of the photosystem II (PSII)-fucoxanthin (Fx) chlorophyll (Chl) a/c binding protein (FCPII) supercomplex from the centric diatom Chaetoceros gracilis The supercomplex comprises two protomers, each with two tetrameric and three monomeric FCPIIs around a PSII core that contains five extrinsic oxygen-evolving proteins at the lumenal surface. The structure reveals the arrangement of a huge pigment network that contributes to efficient light energy harvesting, transfer, and dissipation processes in the diatoms.Entities:
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Year: 2019 PMID： 31371578 DOI： 10.1126/science.aax4406
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728