26 results found
    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. 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. Plant Biology

    Carbon Fixation: Closing the circle

    Marylou C Machingura, James V Moroney
    In Chlamydomonas the different stages of the Calvin-Benson cycle take place in separate locations within the chloroplast.
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    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    A unifying mechanism for the biogenesis of membrane proteins co-operatively integrated by the Sec and Tat pathways

    Fiona J Tooke et al.
    Bioinformatics and experimental approaches identify families of membrane proteins requiring the co-ordinated action of the Sec pathway and Tat pathways for their integration and define features of the polypeptides that mediate interaction with these pathways.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Identification of cryptic subunits from an apicomplexan ATP synthase

    Diego Huet et al.
    A phylum-specific ATP synthase subunit is needed for proper mitochondrial function and stability of the complex in Toxoplasma gondii.
    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. 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. Microbiology and Infectious Disease
    2. Physics of Living Systems

    Protein gradients on the nucleoid position the carbon-fixing organelles of cyanobacteria

    Joshua S MacCready et al.
    Carboxysomes, the carbon-fixation machinery of cyanobacteria, are equidistantly-positioned by dynamic gradients of the protein McdA on the nucleoid that emerge through interaction with a previously unidentified carboxysome factor, McdB.

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