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    1. Microbiology and Infectious Disease

    Human gut Bacteroides capture vitamin B12 via cell surface-exposed lipoproteins

    Aaron G Wexler et al.
    The human gut bacterial lipoprotein BtuG binds vitamin B12 with femtomolar affinity, can remove vitamin B12 from human intrinsic factor, and is required for commensal fitness in the gut.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Evolutionary principles of modular gene regulation in yeasts

    Dawn A Thompson et al.
    The divergence of gene regulation during evolution in yeast traces phylogenetic distance with prominent changes being associated with changes in lifestyle and a whole genome duplication event.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    A bipartite iron-dependent transcriptional regulation of the tryptophan salvage pathway in Chlamydia trachomatis

    Nick D Pokorzynski et al.
    Analysis of the atypical tryptophan biosynthetic operon of Chlamydia trachomatis revealed the simultaneous regulation of transcriptional initiation and termination by an iron-dependent repressor, expanding known regulatory mechanisms of this pathway.
    1. Microbiology and Infectious Disease

    The kinetoplastid-infecting Bodo saltans virus (BsV), a window into the most abundant giant viruses in the sea

    Christoph M Deeg et al.
    Bodo saltans virus defines the most abundant giant viruses in the ocean and highlights the genomic plasticity, rooted in evolutionary arms races, that gave rise to giant viruses.
    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

    LINE-1 protein localization and functional dynamics during the cell cycle

    Paolo Mita et al.
    A combination of functional, biochemical and imaging studies show that LINE-1/L1 proteins and mRNA enter the nucleus through mitotic nuclear membrane breakdown, interact with components of the DNA replication fork and mediate retrotransposition during S phase.
    1. Computational and Systems Biology

    Essential metabolism for a minimal cell

    Marian Breuer et al.
    A near-complete flux balance analysis model of a minimal cell demonstrates the high essentiality of its metabolic genes, agrees well with experimental essentiality data and suggests some further gene removals.
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    A tRNA modification balances carbon and nitrogen metabolism by regulating phosphate homeostasis

    Ritu Gupta et al.
    The role of an amino acid-dependent tRNA modification as a nutrient sensor and regulator of metabolic homeostasis has been discovered.
    1. Cell Biology
    2. Computational and Systems Biology

    Nonlinear feedback drives homeostatic plasticity in H2O2 stress response

    Youlian Goulev et al.
    Nonlinear H2O2 scavenging by peroxiredoxins drives acquired stress resistance and replicative lifespan hormesis.
    1. Cell Biology

    Tryparedoxin peroxidase-deficiency commits trypanosomes to ferroptosis-type cell death

    Marta Bogacz, R Luise Krauth-Siegel
    Ferroptosis is an evolutionary ancient process that is counterbalanced by distant peroxidases, GPx4 in mammals and tryparedoxin peroxidases in trypanosomes, and can be induced at distinct subcellular membranes depending on the individual cell type.