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    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. 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. Microbiology and Infectious Disease
    2. Plant Biology

    Biosynthesis of a sulfated exopolysaccharide, synechan, and bloom formation in the model cyanobacterium Synechocystis sp. strain PCC 6803

    Kaisei Maeda et al.
    A potentially useful cyanobacterial sulfated exopolysaccharide and its biosynthesis and regulation genes, which contribute to the laboratorial bloom formation, are elucidated for the first time among prokaryotes.
    1. Microbiology and Infectious Disease
    2. Plant Biology

    Proximity proteomics in a marine diatom reveals a putative cell surface-to-chloroplast iron trafficking pathway

    Jernej Turnšek et al.
    An iron-sensitive gene cluster encodes proteins that co-localize with phytotransferrin endosomes and are involved in key intracellular iron transformation and trafficking processes in a model marine diatom.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    Flavodiiron proteins 1–to-4 function in versatile combinations in O2 photoreduction in cyanobacteria

    Anita Santana-Sanchez et al.
    In vivo evidence is provided indicating that Flv2/Flv4, together with Flv1/Flv3, mediate O2 photoreduction downstream of PSI in a highly coordinated manner.
    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. Plant Biology
    2. Structural Biology and Molecular Biophysics

    The structure of photosystem I from a high-light-tolerant cyanobacteria

    Zachary Dobson et al.
    The necessity of studying extremophile organisms is exemplified by the structure of photosystem I from a high-light tolerant cyanobacteria, demonstrating the relationship between the structure and function in photosystem I.
    1. Plant Biology
    2. Structural Biology and Molecular Biophysics

    In situ cryo-ET structure of phycobilisome–photosystem II supercomplex from red alga

    Meijing Li et al.
    The nature of the phycobilisome–photosystem II supercomplex on the native thylakoid determined with cryo-electron tomography at an unprecedented resolution reveals that one phycobilisome interconnects with six photosystem monomers.
    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.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    Limitations to photosynthesis by proton motive force-induced photosystem II photodamage

    Geoffry A Davis et al.
    Storage of solar energy in the thylakoid electrical field by photosynthesis in vivo can substantially destabilize charge-separated states in photosystem II, leading to singlet oxygen production and photodamage, contributing to loss of productivity, especially under fluctuating light experienced in the field.