38 results found
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Reverse evolution leads to genotypic incompatibility despite functional and active site convergence

    Miriam Kaltenbach et al.
    Enzyme evolution is reversible on a structural and functional (phenotypic) level, but through a different mutational pathway that leads to genotypic incompatibility with the ancestor.
    1. Ecology
    2. Chromosomes and Gene Expression

    Emerging Technology: Concerning RNA-guided gene drives for the alteration of wild populations

    Kevin M Esvelt et al.
    Combining CRISPR/Cas9 genome editing with gene drives may enable scientists to reversibly edit the genomes of diverse wild populations, an advance that could help eliminate diseases, support sustainable agriculture, and control invasive species.
    1. Physics of Living Systems

    Negative reciprocity, not ordered assembly, underlies the interaction of Sox2 and Oct4 on DNA

    John W Biddle et al.
    Rigorous reanalysis of single-molecule data yields evidence for energy expenditure in the interaction of transcription factors on DNA.
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    PCGF6-PRC1 suppresses premature differentiation of mouse embryonic stem cells by regulating germ cell-related genes

    Mitsuhiro Endoh et al.
    PCGF6 links sequence specific target recognition by the MAX/MGA transcription factor complex to PRC1 (polycomb repressive complex 1) -dependent transcriptional silencing of germ cell-specific genes in mouse pluripotent stem cells.
    1. Neuroscience

    Analysis of the NK2 homeobox gene ceh-24 reveals sublateral motor neuron control of left-right turning during sleep

    Juliane Schwarz, Henrik Bringmann
    A genetic analysis has identified the cholinergic SIA sublateral motor neurons, which innervate all four body wall muscles separately, as crucial regulators of turning around during sleep in Caenorhabditis elegans.
    1. Cancer Biology
    2. Cell Biology

    TGF-β reduces DNA ds-break repair mechanisms to heighten genetic diversity and adaptability of CD44+/CD24− cancer cells

    Debjani Pal et al.
    Phenotypic diversity and cell state transition (i.e., acquisition of a CD44+/CD24- cell state or exposure to TGF-beta) can spur intra-tumor genetic heterogeneity and contribute to acquired resistance.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Proteasome storage granules protect proteasomes from autophagic degradation upon carbon starvation

    Richard S Marshall, Richard D Vierstra
    Proteasomes are protected from autophagic elimination upon carbon starvation by sequestration into cytoplasmic storage granules, which aid cell fitness by providing a cache of proteasomes that can be rapidly remobilized when carbon availability improves.
    1. Cell Biology

    CPEB4 is regulated during cell cycle by ERK2/Cdk1-mediated phosphorylation and its assembly into liquid-like droplets

    Jordina Guillén-Boixet et al.
    CPEB4's switch from translational repressor to activator is regulated during cell cycle by hyperphosphorylation of its intrinsically disordered domain, which controls its phase-separation into RNA-containing liquid-like droplets.
    1. Structural Biology and Molecular Biophysics

    Structural basis of interprotein electron transfer in bacterial sulfite oxidation

    Aaron P McGrath et al.
    A structural and functional analysis of the electron transfer complex between a sulfite oxidase and its redox protein partner reveals an elegant compromise between the requirements for fast and efficient electron transfer and reaction specificity.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Large-scale filament formation inhibits the activity of CTP synthetase

    Rachael M Barry et al.
    The accumulation of its product, cytidine triphosphate, encourages the enzyme CTP synthetase (CtpS) to form large-scale polymers and inhibits the enzyme's activity.

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