981 results found
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Protein quality control in the nucleolus safeguards recovery of epigenetic regulators after heat shock

    Maria Azkanaz, Aida Rodríguez López ... Vincent van den Boom
    Heat shock induces relocalization of epigenetic modifiers to the nucleolus, which acts as a dedicated protein quality control center that is indispensable for recovery of epigenetic regulators and epigenetic modifications.
    1. Cell Biology

    Cytoplasmic protein misfolding titrates Hsp70 to activate nuclear Hsf1

    Anna E Masser, Wenjing Kang ... Claes Andréasson
    Hsp70 restricts DNA binding activity of Hsf1 to control the width and amplitude of the heat-shock regulon.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Distinct transcriptional responses elicited by unfolded nuclear or cytoplasmic protein in mammalian cells

    Yusuke Miyazaki, Ling-chun Chen ... Thomas J Wandless
    A new unfolded protein response has been discovered that is distinct from the heat shock response and protects mammalian cells from proteotoxic stress.
    1. Structural Biology and Molecular Biophysics

    Interplay of disordered and ordered regions of a human small heat shock protein yields an ensemble of ‘quasi-ordered’ states

    Amanda F Clouser, Hannah ER Baughman ... Rachel E Klevit
    Multiple iso-energetic-specific interactions involving the intrinsically-disordered region of sHSP HSPB1 define a quasi-ordered state, providing insights into inherited disease-associated mutations within the region that are thought to be disordered.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The translation elongation factor eEF1A1 couples transcription to translation during heat shock response

    Maria Vera, Bibhusita Pani ... Evgeny Nudler
    Eukaryotic translation elongation factor 1A1 controls the process of heat shock response, from transcriptional activation of the HSP70 gene, to HSP70 mRNA stabilization, nuclear export, and translation.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Evolution towards simplicity in bacterial small heat shock protein system

    Piotr Karaś, Klaudia Kochanowicz ... Krzysztof Liberek
    Phylogenetic and biochemical analysis reveals crucial role of two substitutions in the α–crystallin domain for development of new functionality of IbpA chaperone after the loss of paralogous IbpB in Erwiniaceae.
    1. Cell Biology
    2. Computational and Systems Biology

    Transcriptional regulation of Sis1 promotes fitness but not feedback in the heat shock response

    Rania Garde, Abhyudai Singh ... David Pincus
    The chaperones Hsp70 and Sis1 collaborate to repress the heat shock response and are both transcriptional targets of the heat shock response, yet only Hsp70 acts as a negative feedback regulator of the heat shock response.
    1. Cell Biology
    2. Computational and Systems Biology

    Dynamic control of Hsf1 during heat shock by a chaperone switch and phosphorylation

    Xu Zheng, Joanna Krakowiak ... David Pincus
    Quantitative dissection of the roles of chaperone binding and phosphorylation in regulating heat shock factor 1 leads to a predictive model of the dynamics of the yeast heat shock response.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Transient intracellular acidification regulates the core transcriptional heat shock response

    Catherine G Triandafillou, Christopher D Katanski ... D Allan Drummond
    When translation stops, cells require intracellular acidification to turn on the conserved heat shock response during stress, and stress-triggered acidification (common in eukaryotes) is adaptive, promoting cell and population fitness.
    1. Cell Biology

    Multiplexed mRNA assembly into ribonucleoprotein particles plays an operon-like role in the control of yeast cell physiology

    Rohini R Nair, Dmitry Zabezhinsky ... Jeffrey E Gerst
    Prokaryotes use polycistronic messages for coordinated translation, whereas eukaryotic cells may achieve tunable protein synthesis by packaging monocistronic mRNAs into functional multiplexes via co-transcriptional interallelic coupling and non-canonical histone-H4 functions.

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