42 results found
    1. Cell Biology
    2. Developmental Biology

    Heart of glass anchors Rasip1 at endothelial cell-cell junctions to support vascular integrity

    Bart-Jan de Kreuk et al.
    The proteins Heart of Glass (HEG1) and Rasip1 are both essential for cardiovascular development; and directly bind to each other to guide Rasip1 to endothelial cell junctions to support vascular integrity.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A Histidine pH sensor regulates activation of the Ras-specific guanine nucleotide exchange factor RasGRP1

    Yvonne Vercoulen et al.
    The Ras activator RasGRP1 that impacts Ras signals in immune cells, leukemias, and colorectal cancer, switches to an active conformation aided by a pH-sensitive histidine residue in a central location of the RasGRP1 molecule.
    1. Biochemistry and Chemical Biology
    2. Immunology and Inflammation

    Rasgrp1 mutation increases naïve T-cell CD44 expression and drives mTOR-dependent accumulation of Helios+ T cells and autoantibodies

    Stephen R Daley et al.
    A single point mutation in a Ras activator leads to aberrant constitutive mTOR signaling in peripheral T cells that consequently accumulate as abnormal T helper cells and stimulate the production of autoantibodies by B cells.
    1. Structural Biology and Molecular Biophysics

    Structural analysis of autoinhibition in the Ras-specific exchange factor RasGRP1

    Jeffrey S Iwig et al.
    A key activator of Ras signaling adopts an autoinhibited, dimeric conformation that is activated by membrane and calcium binding.
    1. Developmental Biology
    2. Genetics and Genomics

    2018 Gairdner Awards: The discovery and importance of genomic imprinting

    Anne C Ferguson-Smith, Deborah Bourc'his
    Research into genomic imprinting has provided a foundation for the study of epigenetic mechanisms, especially during development, and has also shed light on a range of rare genetic disorders and common diseases.
    1. Cell Biology
    2. Neuroscience

    Synaptotagmin 1 directs repetitive release by coupling vesicle exocytosis to the Rab3 cycle

    Yunsheng Cheng et al.
    Experiments in C. elegans reveal how synaptotagmin and Rab3, the 'yin and yang' of synapses, control whether transmitter vesicles remain docked at the presynaptic membrane or release their contents into the synapse.
    1. Cell Biology

    Genome-wide interrogation of extracellular vesicle biology using barcoded miRNAs

    Albert Lu et al.
    A screen using artificially barcoded, exosomal microRNAs, paired with CRISPR guide RNAs, helped identify new players in multivesicular endosome exocytosis and a role for Wnt signaling.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Proteomic analysis of cell cycle progression in asynchronous cultures, including mitotic subphases, using PRIMMUS

    Tony Ly et al.
    A detailed analysis of protein abundance and phosphorylation changes across mitotic subphases and interphase in asynchronously growing human cells has been enabled by combining FACS with quantitative MS-based proteomics.
    1. Cell Biology
    2. Developmental Biology

    HMMR acts in the PLK1-dependent spindle positioning pathway and supports neural development

    Marisa Connell et al.
    HMMR regulates spindle positioning in neural and other cell types downstream of PLK1 and subsequently affects cortical NuMA-Dynein localization.

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