625 results found
    1. Cell Biology
    2. Genetics and Genomics

    The nutrient-sensing GCN2 signaling pathway is essential for circadian clock function by regulating histone acetylation under amino acid starvation

    Xiao-Lan Liu, Yulin Yang ... Xiao Liu
    The nutrient-sensing GCN2 signaling pathway is required for robust circadian rhythm by recruiting the histone acetyltransferase GCN5 to establish a proper chromatin state at the circadian clock gene promoter under amino acid starvation in Neurospora.
    1. Cell Biology

    A stress assembly that confers cell viability by preserving ERES components during amino-acid starvation

    Margarita Zacharogianni, Angelica Aguilera-Gomez ... Catherine Rabouille
    Amino-acid starvation leads to the formation of a reversible stress assembly, the Sec body, which is a pro-survival reservoir for components of the ER exit sites.
    1. Cell Biology

    In vivo vizualisation of mono-ADP-ribosylation by dPARP16 upon amino-acid starvation

    Angelica Aguilera-Gomez, Marinke M van Oorschot ... Catherine Rabouille
    Amino-acid induced Sec body formation is mediated by PARP16 dependent MARylation of Sec16, a component of the endoplasmic reticulum exit site.
    1. Cell Biology
    2. Genetics and Genomics

    The ribosomal P-stalk couples amino acid starvation to GCN2 activation in mammalian cells

    Heather P Harding, Adriana Ordonez ... David Ron
    Genetic lesions that compromise the ribosome P-stalk implicate direct signalling from the ribosome to the translation initiation factor eIF2 kinase GCN2 in the cellular response to amino acid starvation.
    1. Biochemistry and Chemical Biology

    Cytosolic aspartate aminotransferase moonlights as a ribosome-binding modulator of Gcn2 activity during oxidative stress

    Robert A Crawford, Mark P Ashe ... Graham D Pavitt
    Using mass spectrometry to study protein composition of translating ribosomes under unstressed or stress conditions, aspartate aminotransferase 2 (Aat2) is identified as a metabolic enzyme with a moonlighting function in the yeast integrated stress-response pathway.
    1. Cell Biology

    Complementary α-arrestin-ubiquitin ligase complexes control nutrient transporter endocytosis in response to amino acids

    Vasyl Ivashov, Johannes Zimmer ... David Teis
    Metabolic cues enlist ubiquitin ligase adaptors for the selective control of cellular nutrient acquisition strategies.
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

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

    Ritu Gupta, Adhish S Walvekar ... Sunil Laxman
    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

    The stress-responsive kinases MAPKAPK2/MAPKAPK3 activate starvation-induced autophagy through Beclin 1 phosphorylation

    Yongjie Wei, Zhenyi An ... Beth Levine
    Nutrient starvation activates autophagy by a novel signaling mechanism that is blocked by one of the major autophagy inhibitors.
    1. Cell Biology

    Tripartite suppression of fission yeast TORC1 signaling by the GATOR1-Sea3 complex, the TSC complex, and Gcn2 kinase

    Tomoyuki Fukuda, Fajar Sofyantoro ... Kazuhiro Shiozaki
    Sea3, a presumed subunit of the GATOR2 complex in fission yeast, is required for the GATOR1 function that attenuates TORC1 in parallel with the TSC complex and Gcn2 kinase.
    1. Cell Biology

    Ait1 regulates TORC1 signaling and localization in budding yeast

    Ryan L Wallace, Eric Lu ... Andrew P Capaldi
    The budding yeast gained a novel regulator of TORC1 signaling, called Ait1, 150–200 million years ago, around the same time they lost functional Rheb and Tsc1/2.

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