983 results found
    1. Biochemistry and Chemical Biology

    Membrane immersion allows rhomboid proteases to achieve specificity by reading transmembrane segment dynamics

    Syed M Moin, Sinisa Urban
    Intramembrane proteases identify target proteins in a different way from other proteases.
    1. Structural Biology and Molecular Biophysics

    Direct single molecule measurement of TCR triggering by agonist pMHC in living primary T cells

    Geoff P O'Donoghue, Rafal M Pielak ... Jay T Groves
    Quantitative observations of single-molecule binding between antigen and T cell receptor (TCR) in living primary T cells reveals unbinding kinetics, stoichiometry and signaling molecule recruitment, providing insights into the mechanisms of antigen recognition by the immune system.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Minor introns are embedded molecular switches regulated by highly unstable U6atac snRNA

    Ihab Younis, Kimberly Dittmar ... Gideon Dreyfuss
    Hundreds of cell growth and stress response genes are controlled by a rare small RNA component of an ancient splicing machinery, providing a raison d'être for its previously unexplained evolutionary conservation.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Multiple interfaces between a serine recombinase and an enhancer control site-specific DNA inversion

    Meghan M McLean, Yong Chang ... Reid C Johnson
    The structure of the recombination complex responsible for flagellar antigen switching in Salmonella enterica, and the mechanism that regulates the site-specific DNA inversion reaction, have been determined.
    1. Stem Cells and Regenerative Medicine
    2. Chromosomes and Gene Expression

    Hdac6 regulates Tip60-p400 function in stem cells

    Poshen B Chen, Jui-Hung Hung ... Thomas G Fazzio
    A normally cytoplasmic deacetylase, Hdac6, localizes to the nucleus in embryonic stem cells, where it regulates the essential Tip60-p400 chromatin remodeling complex.
    1. Neuroscience

    Charcot-Marie-Tooth 2B mutations in rab7 cause dosage-dependent neurodegeneration due to partial loss of function

    Smita Cherry, Eugene Jennifer Jin ... P Robin Hiesinger
    Mutations that reduce the functioning of rab7 may underlie the degeneration of sensory and motor nerves in Charcot-Marie-Tooth 2B disease, which suggests increasing endolysosomal function as a therapy.
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    Multiple knockout mouse models reveal lincRNAs are required for life and brain development

    Martin Sauvageau, Loyal A Goff ... John L Rinn
    Long intergenic noncoding RNA molecules (lincRNAs) are shown to have critical roles in mammalian development and physiology in vivo.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Single-molecule tracking of the transcription cycle by sub-second RNA detection

    Zhengjian Zhang, Andrey Revyakin ... Robert Tjian
    A new technique called fastFISH enables nearly real-time and stoichiometric detection of nascent RNA and the tracking of individual stages of transcription at the level of single-molecules.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Arf1/COPI machinery acts directly on lipid droplets and enables their connection to the ER for protein targeting

    Florian Wilfling, Abdou Rachid Thiam ... Tobias C Walther
    The targeting of proteins from the endoplasmic reticulum to lipid droplets relies on surface modulation of the lipid droplet by the Arf1/COPI machinery.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Diversity and plasticity in Rab GTPase nucleotide release mechanism has consequences for Rab activation and inactivation

    Lars Langemeyer, Ricardo Nunes Bastos ... Francis A Barr
    Analysis of multiple guanine exchange factors shows that Rab activation can occur via a number of mechanistically distinct GDP-release pathways.

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