103 results found
    1. Structural Biology and Molecular Biophysics

    Autoinhibition of ankyrin-B/G membrane target bindings by intrinsically disordered segments from the tail regions

    Keyu Chen et al.
    The 24 ANK repeats of each ankyrin are inhibited by combinatorial bindings of multiple disordered segments from their tail regions, suggesting a mechanism for differential regulations of membrane target bindings by ankyrins.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Autoinhibition of Munc18-1 modulates synaptobrevin binding and helps to enable Munc13-dependent regulation of membrane fusion

    Ewa Sitarska et al.
    Biophysical and functional data strongly support the notion that Munc18-1 acts as a template to assemble the neuronal SNARE complex, and that inhibition of this activity underlies diverse forms of regulation of neurotransmitter release.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Relief of autoinhibition by conformational switch explains enzyme activation by a catalytically dead paralog

    Oleg A Volkov et al.
    A catalytically dead paralog activates its cognate enzyme through an allosteric mechanism that combined structural and phylogenomic analysis indicates arose through acquisition of a dimerization domain, suggesting a general model for how complex allostery evolves.
    1. Structural Biology and Molecular Biophysics

    Structure analyses reveal a regulated oligomerization mechanism of the PlexinD1/GIPC/myosin VI complex

    Guijun Shang et al.
    PlexinD1 binding releases GIPC autoinhibition, leading to formation of high-order oligomers of the GIPC/myosin VI complex.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Autoinhibition of Bruton's tyrosine kinase (Btk) and activation by soluble inositol hexakisphosphate

    Qi Wang et al.
    A key B-cell tyrosine kinase that adopts an autoinhibited conformation, and can be activated by either membrane recruitment or soluble inositol hexakisphosphates in solution.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Phosphoinositides regulate force-independent interactions between talin, vinculin, and actin

    Charlotte F Kelley et al.
    In vitro reconstitution of the core focal adhesion proteins talin and vinculin with actin reveals lipid-dependent release of autoinhibition.
    1. Cell Biology
    2. Developmental Biology

    Activation of Discs large by aPKC aligns the mitotic spindle to the polarity axis during asymmetric cell division

    Ognjen Golub et al.
    The Par complex controls spindle orientation during asymmetric cell division by phosphorylating the tumor suppressor Discs large, overcoming its autoinhibited state, and allowing it to bind the microtubule-binding protein GukHolder.
    1. Structural Biology and Molecular Biophysics

    Structural analysis of autoinhibition in the Ras-specific exchange factor RasGRP1

    Jeffrey S Iwig et al.
    A key activator of Ras signaling adopts an autoinhibited, dimeric conformation that is activated by membrane and calcium binding.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Elucidation of a four-site allosteric network in fibroblast growth factor receptor tyrosine kinases

    Huaibin Chen et al.
    A four-switch long-range allosteric network controls FGF receptor kinase conformational dynamics as well as activity and is applicable to other receptor tyrosine kinases.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis for the activation of PLC-γ isozymes by phosphorylation and cancer-associated mutations

    Nicole Hajicek et al.
    The high-resolution X-ray crystal structure of PLC-γ1 reveals a unifying model for the regulation of the PLC-γ isozymes.

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