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Crystal structure of spinach major light-harvesting complex at 2.72 Å resolution
TLDR
The first X-ray structure of LHC-II in icosahedral proteoliposome assembly at atomic detail is reported, finding the xanthophyll-cycle carotenoid at the monomer–monomer interface may be involved in the non-radiative dissipation of excessive energy, one of the photoprotective strategies that have evolved in plants. Expand
Molecular basis of photoprotection and control of photosynthetic light-harvesting
TLDR
A spectroscopic analysis of this crystal form is presented, and the specific changes in configuration of its pigment population that give LHCII the intrinsic capability to regulate energy flow are identified, which provides a molecular basis for understanding the control of photosynthetic light-harvesting. Expand
Structure of spinach photosystem II-LHCII supercomplex at 3.2 Å resolution.
TLDR
By analysing the closely connected interfacial chlorophylls, this work has obtained detailed insights into the energy-transfer pathways between the antenna and core complexes and revealed a homodimeric supramolecular system. Expand
Structure and assembly mechanism of plant C2S2M2-type PSII-LHCII supercomplex
TLDR
Cryo–electron microscopy structures of a supercomplex consisting of a dimeric core and two strongly bound and two moderately bound LHCIIs (C2S2M2), is reported, which is the dominant form in plants acclimated to limited light. Expand
Comparative and Functional Genomics of Anoxygenic Green Bacteria from the Taxa Chlorobi , Chloroflexi , and Acidobacteria
TLDR
Based upon phylogenetic inferences derived from analyses of sequences for reaction centers and enzymes of (bacterio)chlorophyll biosynthesis, some implications concerning the evolutionary origins of photosynthesis are discussed. Expand
Protistan diversity and activity inferred from RNA and DNA at a coastal ocean site in the eastern North Pacific.
TLDR
Assessing those members of the protistan community contributing to biogeochemical cycling (active organisms) using the ratio of cDNA to 18S rRNA gene sequences within major protistan taxonomic groups sheds new light on the relative metabolic activity of specific protistan groups and how microbial communities respond to changing environmental conditions. Expand
Structure of a tetrameric MscL in an expanded intermediate state
TLDR
The crystal structure of a carboxy-terminal truncation mutant of MscL from Staphylococcus aureus (SaMscL(CΔ26)) at 3.8 Å resolution is presented, revealing a tetrameric channel with both transmembrane helices tilted away from the membrane normal at angles close to that inferred for the open state, probably corresponding to a non-conductive but partially expanded intermediate state. Expand
Two lutein molecules in LHCII have different conformations and functions: Insights into the molecular mechanism of thermal dissipation in plants.
TLDR
This work presents the first direct structural evidence indicating that the two lutein(Lut) molecules bound in each LHCII monomer have different conformations, Lut621 has a more twisted conformation than that of Lut620. Expand
Investigating Microbial Eukaryotic Diversity from a Global Census: Insights from a Comparison of Pyrotag and Full-Length Sequences of 18S rRNA Genes
TLDR
Operational taxonomic units derived from full-length and pyrotag sequences of 18S rRNA genes from 10 global samples were analyzed and found to provide holistic assessments of protistan communities, although care must be taken in interpreting the results. Expand
Temporal metatranscriptomic patterning in phototrophic Chloroflexi inhabiting a microbial mat in a geothermal spring
TLDR
A proposed conceptual model for temporal changes in central carbon metabolism and energy production of FAPs living in a natural environment proposes that, at night, Chloroflexus and Roseiflexus spp. Expand
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