3,200 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    SIRT6 regulates Ras-related protein R-Ras2 by lysine defatty-acylation

    Xiaoyu Zhang et al.
    A posttranslational regulatory mechanism for a Ras family small GTPase could open up new directions to understand and control the Ras family of proteins that are important for physiology and diseases.
    1. Cell Biology
    2. Developmental Biology

    Genetic screen in Drosophila muscle identifies autophagy-mediated T-tubule remodeling and a Rab2 role in autophagy

    Naonobu Fujita et al.
    Analyses of a developmentally regulated Drosophila myofiber remodeling program provide insight into induced autophagy required for T-tubule membrane reorganization, and uncover a conserved Rab2 role in autophagosome-lysosome fusion.
    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. Biochemistry and Chemical Biology
    2. Cancer Biology

    Targeting RAS-driven human cancer cells with antibodies to upregulated and essential cell-surface proteins

    Alexander J Martinko et al.
    Proteomics and functional genomics coupled to an antibody discovery pipeline revealed the influence of oncogenic RAS signaling on the cell-surface proteome and resulted in the discovery of potential therapeutic targets for RAS-driven cancers.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Specific cancer-associated mutations in the switch III region of Ras increase tumorigenicity by nanocluster augmentation

    Maja Šolman et al.
    Rare mutations in the switch III region of Ras can increase its nanoscale clustering, which enhances effector recruitment and downstream signaling.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Site-specific monoubiquitination downregulates Rab5 by disrupting effector binding and guanine nucleotide conversion

    Donghyuk Shin et al.
    With monoubiquitination sites of Rab5 identified and structural and biochemical studies using chemically synthesized ubiquitinated Rab5, Rab5 monoubiquitination is found to downregulate the function of Rab5 in a site-dependent manner.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    bMERB domains are bivalent Rab8 family effectors evolved by gene duplication

    Amrita Rai et al.
    A human three-helix Rab-binding domain can potentially bind to two Rab proteins simultaneously with different affinities at binding sites generated by gene duplication.
    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 et al.
    Analysis of multiple guanine exchange factors shows that Rab activation can occur via a number of mechanistically distinct GDP-release pathways.
    1. Developmental Biology

    Developmental lineage priming in Dictyostelium by heterogeneous Ras activation

    Alex Chattwood et al.
    The probability of a cellular response to a differentiation inducing signal is correlated with the dynamic expression of a Ras protein, and produces a ‘salt and pepper’ pattern of cell differentiation.
    1. Human Biology and Medicine

    Potential harmful effects of discontinuing ACE-inhibitors and ARBs in COVID-19 patients

    Gian Paolo Rossi et al.
    Current evidence does not suggest adverse effects of ACE inhibitors or ARBs in COVID-19 patients and, to the contrary, discontinuing these drugs in these patients may potentially be harmful.

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