354 results found
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Evolution of reduced co-activator dependence led to target expansion of a starvation response pathway

    Bin Z He et al.
    The phosphate starvation response network in a commensal yeast evolved to expand its downstream targets via changes in the main transcription factor's dependence on its co-activator, potentially altering the physiological response.
    1. Genetics and Genomics
    2. Plant Biology

    Stress induced gene expression drives transient DNA methylation changes at adjacent repetitive elements

    David Secco et al.
    Phosphate starvation in rice induces widespread, but transient, modulation of DNA methylation near stress responsive genes that is independent from the RNA-directed DNA methylation pathway.
    1. Cell Biology
    2. Plant Biology

    SnRK1-triggered switch of bZIP63 dimerization mediates the low-energy response in plants

    Andrea Mair et al.
    The transcription factor bZIP63 is a key regulator of the starvation response in the model plant Arabidopsis thaliana and is directly targeted by the kinase SnRK1.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    Two bifunctional inositol pyrophosphate kinases/phosphatases control plant phosphate homeostasis

    Jinsheng Zhu et al.
    Genetic and biochemical analysis of two enzymes reveals that inositol pyrophosphate signaling molecules allow plants to sense and regulate cellular phosphate levels, and to take up more phosphate when needed.
    1. Biochemistry and Chemical Biology
    2. Computational and Systems Biology

    Snf1/AMPK promotes the formation of Kog1/Raptor-bodies to increase the activation threshold of TORC1 in budding yeast

    James E Hughes Hallett et al.
    The key Target of Rapamycin Complex (TORC1) component Kog1 moves into bodies during glucose starvation to limit reactivation of the complex.
    1. Chromosomes and Gene Expression

    Ssd1 and Gcn2 suppress global translation efficiency in replicatively aged yeast while their activation extends lifespan

    Zheng Hu et al.
    Activation of the stress response pathway in young cells extends replicative lifespan, not by reducing global protein synthesis per se, but by Gcn4-mediated autophagy induction.
    1. Cancer Biology
    2. Cell Biology

    Drosophila TRIM32 cooperates with glycolytic enzymes to promote cell growth

    Simranjot Bawa et al.
    TRIM32-mediated glycolytic flux generates precursors that are utilized for biomass production in non-dividing muscle, brain and tumor cells, demonstrating a universal metabolic function for TRIM32 in cell growth.
    1. Cell Biology

    Association and dissociation between the mitochondrial Far complex and Atg32 regulate mitophagy

    Aleksei Innokentev et al.
    Ppg1-dependent assembly of the mitochondrial Far complex and association/dissociation between the Far complex and Atg32 are crucial determinants for mitophagy regulation in yeast.
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    A tRNA modification balances carbon and nitrogen metabolism by regulating phosphate homeostasis

    Ritu Gupta et al.
    The role of an amino acid-dependent tRNA modification as a nutrient sensor and regulator of metabolic homeostasis has been discovered.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Pharmacological dimerization and activation of the exchange factor eIF2B antagonizes the integrated stress response

    Carmela Sidrauski et al.
    A drug-like molecule called ISRIB, which activates the translation initiation factor eIF2B, antagonizes stress responses as diverse as protein misfolding and nutrient deprivation, and restores protein synthesis, enhancing memory.

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