544 results found
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    Inhibition of SARS-CoV-2 polymerase by nucleotide analogs from a single-molecule perspective

    Mona Seifert, Subhas C Bera ... David Dulin
    High-throughput and ultra-stable magnetic tweezers reveal that Remdesivir induces a long-lived backtrack pause upon incorporation by the coronavirus polymerase, and SARS-CoV-2 is able to evade interferon-induced antiviral ddhCTP.
    1. Biochemistry and Chemical Biology

    Z-REX uncovers a bifurcation in function of Keap1 paralogs

    Alexandra Van Hall-Beauvais, Jesse R Poganik ... Yimon Aye
    Two zebrafish Keap1-paralogs are equally adept at electrophile-sensing but manifest divergent and co-regulatory electrophile-signaling behaviors.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Structure of the germline genome of Tetrahymena thermophila and relationship to the massively rearranged somatic genome

    Eileen P Hamilton, Aurélie Kapusta ... Robert S Coyne
    The model organism Tetrahymena thermopile carries two nuclei with distinct genomes: an unrearranged germline genome with five chromosomes, and a somatic genome reduced in size by a third and with 181 chromosomes.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Methylation of histone H3K23 blocks DNA damage in pericentric heterochromatin during meiosis

    Romeo Papazyan, Ekaterina Voronina ... Sean D Taverna
    A previously unappreciated histone methylation pathway helps limit DNA double-strand break formation and recombination in heterochromatin during meiosis.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Tuning apicobasal polarity and junctional recycling in the hemogenic endothelium orchestrates the morphodynamic complexity of emerging pre-hematopoietic stem cells

    Léa Torcq, Sara Majello ... Anne A Schmidt
    Pre-hematopoietic stem cells emerge from the aortic floor according to two radically different morphodynamics whose biomechanics rely on controlling apicobasal polarity in hemogenic precursors, which may impact on their fate.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Analysis of CDPK1 targets identifies a trafficking adaptor complex that regulates microneme exocytosis in Toxoplasma

    Alex W Chan, Malgorzata Broncel ... Sebastian Lourido
    Comprehensive characterization of kinase-dependent phosphorylation in the human pathogen Toxoplasma gondii identifies a trafficking adaptor complex required for virulence factor secretion and infection.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A Fyn biosensor reveals pulsatile, spatially localized kinase activity and signaling crosstalk in live mammalian cells

    Ananya Mukherjee, Randhir Singh ... Akash Gulyani
    Unique biosensor design and protein-engineering enables direct visualization of the active form of Fyn kinase with high specificity, minimal perturbation and shows cellular signaling to be compartmentalized and pulsatile.
    1. Chromosomes and Gene Expression

    HIV Tat controls RNA Polymerase II and the epigenetic landscape to transcriptionally reprogram target immune cells

    Jonathan E Reeder, Youn-Tae Kwak ... Iván D'Orso
    Tat uses unexpected regulatory mechanisms to reprogram target immune cells to promote viral replication and rewire pathways beneficial for HIV.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Molecular determinants of large cargo transport into the nucleus

    Giulia Paci, Tiantian Zheng ... Edward A Lemke
    Efficient nuclear transport of very large biomolecules, relevant for viral transport, scales non-linearly with size and its kinetics can be explained by a simple two-parameter energetic model.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Decapping factor Dcp2 controls mRNA abundance and translation to adjust metabolism and filamentation to nutrient availability

    Anil Kumar Vijjamarri, Xiao Niu ... Alan G Hinnebusch
    The yeast mRNA decapping enzyme Dcp1/Dcp2 repressses many genes whose products are required on poor carbon or nitrogen sources in nutrient-replete cells by mRNA decapping and degradation or translational repression, adding post-transcriptional controls to the transcriptional repression of these functions.

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