27 results found
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    Evolution of substrate specificity in a retained enzyme driven by gene loss

    Ana Lilia Juárez-Vázquez et al.
    An integrated biochemical and evolutionary analysis shows how enzyme specificity evolves after gene loss during genome decay, implicating relaxation of purifying selection as a driving force for functional divergence.
    1. Developmental Biology
    2. Neuroscience

    Feeding state-dependent regulation of developmental plasticity via CaMKI and neuroendocrine signaling

    Scott J Neal et al.
    CaMKI and neuroendocrine signaling integrate information about food status to regulate a developmental decision in C. elegans.
    1. Cell Biology
    2. Plant Biology

    Abscisic acid dynamics in roots detected with genetically encoded FRET sensors

    Alexander M Jones et al.
    Fluorescent sensors for the hormone abscisic acid have been developed using a high-throughput platform, and used to monitor hormone dynamics in plant roots and leaves.
    1. Microbiology and Infectious Disease

    Flexible nitrogen utilisation by the metabolic generalist pathogen Mycobacterium tuberculosis

    Aleksandra Agapova et al.
    Metabolomics and stable isotope labelling studies of virulent Mycobacterium tuberculosis reveal a de-centralised metabolic network able to utilise various amino acids as nitrogen sources to a better extent than ammonium.
    1. Chromosomes and Gene Expression

    Dual control of NAD+ synthesis by purine metabolites in yeast

    Benoît Pinson et al.
    Two distinct processes drive coordinated synthesis of purine and pyridine (NAD+) nucleotides in response to AICAR derivatives and ATP.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Regulation by the quorum sensor from Vibrio indicates a receptor function for the membrane anchors of adenylate cyclases

    Stephanie Beltz et al.
    A canonical class III adenylate cyclase with a membrane anchor of six transmembrane spans is regulated by a receptor of similar design, the quorum-sensing receptor from Vibrio harveyi.
    1. Genetics and Genomics
    2. Neuroscience

    Sleep-promoting effects of threonine link amino acid metabolism in Drosophila neuron to GABAergic control of sleep drive

    Yoonhee Ki, Chunghun Lim
    Threonine promotes sleep via down-regulation of metabotropic GABA transmission in the ellipsoid body R2 neurons that generate homeostatic sleep drive in Drosophila.
    1. Microbiology and Infectious Disease

    Changes in the genetic requirements for microbial interactions with increasing community complexity

    Manon Morin et al.
    Analysis of the global genetic requirements and gene expression changes in E. coli in the presence of a simple microbiome revealed pairwise and higher-order interactions, and underlying molecular mechanisms.
    1. Structural Biology and Molecular Biophysics

    Structures of two aptamers with differing ligand specificity reveal ruggedness in the functional landscape of RNA

    Andrew John Knappenberger et al.
    RNA aptamers that are closely related and share a common scaffold can readily adapt to recognize new ligands through changes in just a few nucleotides.
    1. Structural Biology and Molecular Biophysics

    Structure-based analysis of CysZ-mediated cellular uptake of sulfate

    Zahra Assur Sanghai et al.
    Structures of CysZ show a antiparallel membrane protein with an unanticipated fold and together with functional characterization provide insight into a bacterial sulfate translocating system.

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