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    1. Structural Biology and Molecular Biophysics

    Sequence co-evolution gives 3D contacts and structures of protein complexes

    Thomas A Hopf et al.
    Interactions in protein complexes can be predicted from evolutionary information from genomic sequences.
    1. Cell Biology
    2. Medicine

    Augmenter of liver regeneration regulates cellular iron homeostasis by modulating mitochondrial transport of ATP-binding cassette B8

    Hsiang-Chun Chang et al.
    Mammalian cellular iron homeostasis and the maturation of the cytosolic iron sulfur cluster proteins are dependent on the mitochondrial protein import machinery.
    1. Structural Biology and Molecular Biophysics

    De novo modeling of the F420-reducing [NiFe]-hydrogenase from a methanogenic archaeon by cryo-electron microscopy

    Deryck J Mills et al.
    The structure of a large hydrogenase complex involved in the production of methane by microbes has been determined with cryo-electron microscopy.
    1. Neuroscience

    Loss of Frataxin induces iron toxicity, sphingolipid synthesis, and Pdk1/Mef2 activation, leading to neurodegeneration

    Kuchuan Chen et al.
    In Drosophila, the loss of Frataxin causes iron accumulation in the nervous system, which in turn enhances sphingolipid synthesis and activation of PDK1 and Mef2, which leads to neurodegeneration.
    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. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Dna2 nuclease-helicase structure, mechanism and regulation by Rpa

    Chun Zhou et al.
    X-ray crystallography reveals that the Dna2 nuclease-helicase contains a long tunnel through which single-stranded DNA threads, and an allosteric mechanism for displacing the DNA-binding protein Rpa that restricts cleavage to the proper polarity.
    1. Cell Biology
    2. Plant Biology

    A receptor-like kinase mutant with absent endodermal diffusion barrier displays selective nutrient homeostasis defects

    Alexandre Pfister et al.
    The SCHENGEN3 protein is needed for the progression of isolated microdomains into a continuous band, which is necessary for the establishment of the major extracellular diffusion barrier in plant roots: the Casparian strip.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structure of respiratory complex I at work

    Kristian Parey et al.
    The site of ubiquinone binding observed in the cryo-EM structure of respiratory complex I during turnover supports a two-state stabilization change mechanism.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Catalysis-dependent selenium incorporation and migration in the nitrogenase active site iron-molybdenum cofactor

    Thomas Spatzal et al.
    Unanticipated rearrangements in the nitrogenase active site establish the dynamic nature of the FeMo-cofactor during catalysis.
    1. Ecology
    2. Plant Biology
    Arabidopsis illustration

    The Natural History of Model Organisms: Planting molecular functions in an ecological context with Arabidopsis thaliana

    Ute Krämer
    Research in molecular ecology and evolution is increasingly utilizing the model plant Arabidopsis thaliana, placing a spotlight on its natural history.