14 results found
    1. Genetics and Genomics

    Differing isoforms of the cobalamin binding photoreceptor AerR oppositely regulate photosystem expression

    Haruki Yamamoto et al.
    A novel B12 containing photoreceptor is synthesized as two different isoforms that interact with the same transcription factor, with one isoform directing activation and the other promoting repression of photosystem synthesis.
    1. Ecology

    Digitizing mass spectrometry data to explore the chemical diversity and distribution of marine cyanobacteria and algae

    Tal Luzzatto-Knaan et al.
    Mass spectrometry has potential as a tool for ecological studies and bioprospecting of natural products from marine cyanobacteria and algae.
    1. Ecology

    Transcriptome analysis illuminates the nature of the intracellular interaction in a vertebrate-algal symbiosis

    John A Burns et al.
    The endosymbiosis between an alga and the spotted salamander shows several parallels to invertebrate-algal symbioses as well as to pathogen associations in vertebrate animals.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Crystal structures of virus-like photosystem I complexes from the mesophilic cyanobacterium Synechocystis PCC 6803

    Yuval Mazor et al.
    The structure of the photosystem I (PSI) complex from Synechocystis is determined, and reaction center subunits engineered to resemble a viral PSI are found to promote promiscuous electron acceptor properties.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Insight into the evolution of microbial metabolism from the deep-branching bacterium, Thermovibrio ammonificans

    Donato Giovannelli et al.
    The genome of Thermovibrio ammonificans encodes ancestral pathways (e.g., hydrogen oxidation) and more recently acquired ones (e.g., nitrate reduction) and a hybrid pathway for CO2 fixation.
    1. Plant Biology

    Phosphoprotein SAK1 is a regulator of acclimation to singlet oxygen in Chlamydomonas reinhardtii

    Setsuko Wakao et al.
    SAK1, a novel cytoplasmic phosphoprotein, is a key intermediate component of the retrograde signaling pathway controlling nuclear gene expression during acclimation of Chlamydomonas cells to singlet oxygen stress.
    1. Structural Biology and Molecular Biophysics
    2. Plant Biology

    The structure of plant photosystem I super-complex at 2.8 Å resolution

    Yuval Mazor et al.
    The crystal structure of higher plant PSI-LHCI complex reveals intricate details responsible for light harvesting.
    1. Physics of Living Systems
    2. Microbiology and Infectious Disease

    Cyanobacteria use micro-optics to sense light direction

    Nils Schuergers et al.
    The cells of a cyanobacterium act as spherical micro-lenses, allowing the cell to see a light source and move towards it.
    1. Microbiology and Infectious Disease

    The human gut and groundwater harbor non-photosynthetic bacteria belonging to a new candidate phylum sibling to Cyanobacteria

    Sara C Di Rienzi et al.
    Melainabacteria, a candidate phylum related to Cyanobacteria, has been identified in gut and sediment samples by genomic analysis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural insights into the light-driven auto-assembly process of the water-oxidizing Mn4CaO5-cluster in photosystem II

    Miao Zhang et al.
    The structures of photosystem II, with the water-oxidizing Mn4CaO5-cluster fully removed and in an intermediate assembly state, show that photoassembly is facilitated by perfectly pre-arranged protein ligands of the five metal ions.

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