4,213 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Stepwise activation mechanism of the scramblase nhTMEM16 revealed by cryo-EM

    Valeria Kalienkova et al.
    cryo-EM reveals the properties of distinct conformations occupied during activation of the lipid scramblase nhTMEM16 and provides new insights into its interactions with the lipid environment.
    1. Immunology and Inflammation

    Conformational change within the extracellular domain of B cell receptor in B cell activation upon antigen binding

    Zhixun Shen et al.
    Conformational changes occur within extracellular domain of BCR upon antigen engagement, and these conformational changes are related with the strength of BCR activation and are distinct in IgM- and IgG-BCR.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    ESCRT-III activation by parallel action of ESCRT-I/II and ESCRT-0/Bro1 during MVB biogenesis

    Shaogeng Tang et al.
    Building on previous work (Tang et al., 2015), novel ESCRT-III subunit Snf7 auto-activation mutants are used to reveal two parallel ubiquitin-dependent pathways during multivesicular endosome biogenesis.
    1. Cell Biology
    2. Immunology and Inflammation

    Akt-mTORC1 signaling regulates Acly to integrate metabolic input to control of macrophage activation

    Anthony J Covarrubias et al.
    Interleukin 4 signaling co-opts the Akt-mTORC1-Acly pathway to couple metabolic input to the control of energetically demanding processes during macrophage M2 activation.
    1. Physics of Living Systems

    Distinct contributions of the thin and thick filaments to length-dependent activation in heart muscle

    Xuemeng Zhang et al.
    The Frank–Starling law of the heart and its underlying mechanism of length-dependent activation involve distinctive structural changes in both the thin and thick filaments of cardiac muscle cells.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    H3K4 mono- and di-methyltransferase MLL4 is required for enhancer activation during cell differentiation

    Ji-Eun Lee et al.
    MLL4 (KMT2D) is a major mammalian H3K4 mono- and di-methyltransferase that is essential for enhancer activation, cell-type-specific gene expression, and cell differentiation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Activation-triggered subunit exchange between CaMKII holoenzymes facilitates the spread of kinase activity

    Margaret Stratton et al.
    Activation of CaMKII holoenzymes triggers the exchange of subunits with other holoenzymes, including unactivated ones, enabling the calcium-independent phosphorylation and activation of new subunits.
    1. Computational and Systems Biology
    2. Developmental Biology

    Cis-activation in the Notch signaling pathway

    Nagarajan Nandagopal et al.
    Activation of Notch receptors by ligands in the same cell (cis-activation) is a prevalent and functional mode of signaling in the Notch pathway, and co-exists with trans-activation and cis-inhibition.
    1. Biochemistry and Chemical Biology

    Collagen induces activation of DDR1 through lateral dimer association and phosphorylation between dimers

    Victoria Juskaite et al.
    Ligand binding induces DDR1 kinase activity through recruitment of DDR1 receptors into signalling clusters in which phosphorylation occurs across different dimers.

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