38 results found
    1. Plant Biology
    2. Structural Biology and Molecular Biophysics

    Charting the native architecture of Chlamydomonas thylakoid membranes with single-molecule precision

    Wojciech Wietrzynski et al.
    In situ cryo-electron tomography resolves individual photosynthetic complexes within native thylakoid membranes, revealing how thylakoid architecture sorts proteins into discrete membrane domains.
    1. Structural Biology and Molecular Biophysics
    2. Plant Biology

    Native architecture of the Chlamydomonas chloroplast revealed by in situ cryo-electron tomography

    Benjamin D Engel et al.
    The first 3D views of the native algal chloroplast provide new insights into thylakoid biogenesis, photosynthesis, and carbon fixation.
    1. Plant Biology

    A multifaceted analysis reveals two distinct phases of chloroplast biogenesis during de-etiolation in Arabidopsis

    Rosa Pipitone et al.
    Serial-Block-Face Scanning Electron Microscopy (SBF-SEM) associated with biomolecular analysis show that chloroplast differentiation proceeds by distinct ‘structure establishment’ and ‘chloroplast proliferation’ phases, each with differential protein and lipid regulation.
    1. Plant Biology

    Regulation of photosynthetic electron flow on dark to light transition by ferredoxin:NADP(H) oxidoreductase interactions

    Manuela Kramer et al.
    The regulatory switch from protection to assimilation, which plants use to exploit natural, fluctuating light, involves movement of the enzyme ferredoxin:NADP(H) oxidoreductase between chloroplast membrane complexes.
    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.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Assembling the Tat protein translocase

    Felicity Alcock et al.
    Evolutionary bioinformatics and experimentation are applied to the components of the Tat protein transport system to elucidate the structure of the membrane-bound receptor complex and to deduce a molecular description for its substrate-triggered activation.
    1. Physics of Living Systems
    2. Computational and Systems Biology

    Overall energy conversion efficiency of a photosynthetic vesicle

    Melih Sener et al.
    The overall energy conversion efficiency is calculated for a bacterial vesicle that harvests solar energy for ATP production on the basis of an atomic-detail structural model.
    1. Plant Biology
    2. Structural Biology and Molecular Biophysics

    Identification of distinct pH- and zeaxanthin-dependent quenching in LHCSR3 from Chlamydomonas reinhardtii

    Julianne M Troiano et al.
    Light-harvesting complex stress-related is a protein from photosynthetic green algae that prevents damage from sunlight via two distinct conformational processes, which protect against different timescales of solar fluctuations.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    Effects of microcompartmentation on flux distribution and metabolic pools in Chlamydomonas reinhardtii chloroplasts

    Anika Küken et al.
    Mathematical models reveal that under the physiologically different conditions ambient and high CO2, two algal microcompartments are metabolically connected by facilitated transport.
    1. Cell Biology
    2. Plant Biology

    Photosynthetic sea slugs induce protective changes to the light reactions of the chloroplasts they steal from algae

    Vesa Havurinne, Esa Tyystjärvi
    Slug chloroplasts avoid damage to photosynthesis by maintaining an oxidized electron transfer chain with the help of oxygen-sensitive electron acceptors.

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