38 results found
    1. Structural Biology and Molecular Biophysics

    The primary structural photoresponse of phytochrome proteins captured by a femtosecond X-ray laser

    Elin Claesson et al.
    Time-resolved crystallography provides insight into the photochemical reactions in photoreceptor proteins, explaining the earliest steps of how plants, fungi and bacteria sense red light.
    1. Plant Biology

    PCH1 integrates circadian and light-signaling pathways to control photoperiod-responsive growth in Arabidopsis

    He Huang et al.
    A conserved, circadian-regulated protein alters light perception in plants to regulate daily growth in response to changing photoperiod.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Asymmetric activation mechanism of a homodimeric red light-regulated photoreceptor

    Geoffrey Gourinchas et al.
    Molecular insights to phytochrome activation and signal transduction over long distances enable the allosteric regulation of enzymatic effectors.
    1. Plant Biology

    BLADE-ON-PETIOLE proteins act in an E3 ubiquitin ligase complex to regulate PHYTOCHROME INTERACTING FACTOR 4 abundance

    Bo Zhang et al.
    The abundance of the PIF4 transcription factor, central in light and temperature signaling, is controlled by an E3 ligase encoded by BOP proteins.
    1. Plant Biology

    Shade-induced nuclear localization of PIF7 is regulated by phosphorylation and 14-3-3 proteins in Arabidopsis

    Xu Huang et al.
    A phosphorylation dependent translocation of PIF7 and involvement of 14-3-3 proteins reveal novel regulation mechanisms in shade signal transduction.
    1. Structural Biology and Molecular Biophysics

    Phytochrome Photoreceptors: Rapid response

    Jon Hughes
    Extremely short X-ray pulses from a free-electron laser are helping to clarify how phytochromes respond to light, but puzzles remain.
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    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. Immunology and Inflammation

    Optogenetic control shows that kinetic proofreading regulates the activity of the T cell receptor

    O Sascha Yousefi et al.
    Controlling the duration of ligand binding to the T cell receptor by light shows that T cells discriminate stimulatory from non-stimulatory ligands by measuring the dynamics of ligand binding.
    1. Biochemistry and Chemical Biology

    Total biosynthesis of the cyclic AMP booster forskolin from Coleus forskohlii

    Irini Pateraki et al.
    The entire biosynthetic pathway for the diterpenoid forskolin in Coleus forskohlii has been reconstituted in yeast.
    1. Plant Biology

    A cis-carotene derived apocarotenoid regulates etioplast and chloroplast development

    Christopher I Cazzonelli et al.
    Carotenoids are not just required as core components for plastid biogenesis, they can be cleaved into an apocarotenoid signal that regulates etioplast and chloroplast development during extended periods of darkness.

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