190 results found
    1. Cell Biology
    2. Physics of Living Systems

    The transition state and regulation of γ-TuRC-mediated microtubule nucleation revealed by single molecule microscopy

    Akanksha Thawani, Michael J Rale ... Sabine Petry
    Four αβ-tubulin dimers associate laterally on γ-TuRC to define the rate-limiting transition state for microtubule nucleation.
    1. Neuroscience

    Mechanical activation of TWIK-related potassium channel by nanoscopic movement and rapid second messenger signaling

    E Nicholas Petersen, Mahmud Arif Pavel ... Scott B Hansen
    Cells utilize a membrane-mediated mechanism for mechanosensation, which involves the disruption of lipid rafts and a signal relayed to an ion channel.
    1. Cell Biology

    Capping protein regulates endosomal trafficking by controlling F-actin density around endocytic vesicles and recruiting RAB5 effectors

    Dawei Wang, Zuodong Ye ... Jianbo Yue
    CapZ controls actin filament density around immature early endosomes via its C-terminal domain to facilitate the homotypic fusion of the endocytic vesicles, and it functions as a scaffold protein via its N-terminal domain to recruit RAB5 effectors to early endosomes.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis for cytoplasmic dynein-1 regulation by Lis1

    John P Gillies, Janice M Reimer ... Samara L Reck-Peterson
    A 3.1 Å structure of cytoplasmic dynein-1 in complex with its regulator Lis1 reveals the interfaces between dynein and Lis1, all of which are important for dynein function in vitro and in vivo.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Pathogenic variants of sphingomyelin synthase SMS2 disrupt lipid landscapes in the secretory pathway

    Tolulope Sokoya, Jan Parolek ... Joost CM Holthuis
    Organellar lipidomics and lipid reporter studies in intact cells reveal how disease-relevant mutations in a sphingolipid biosynthetic enzyme cause a wide-ranging perturbation of lipid distributions and membrane properties along the secretory pathway.
    1. Microbiology and Infectious Disease

    Profiling of myristoylation in Toxoplasma gondii reveals an N-myristoylated protein important for host cell penetration

    Malgorzata Broncel, Caia Dominicus ... Moritz Treeck
    Myristoylation of a secreted protein, identified in a global myristoylation analysis of the eukaryotic parasite Toxoplasma gondii, is important for host cell invasion.
    1. Biochemistry and Chemical Biology

    High-throughput profiling of sequence recognition by tyrosine kinases and SH2 domains using bacterial peptide display

    Allyson Li, Rashmi Voleti ... Neel H Shah
    A high-throughput method to profile tyrosine kinases and phosphotyrosine recognition domains reveals new rules for sequence specificity and maps the effects of mutations on the recognition of tyrosine phosphorylation sites.
    1. Structural Biology and Molecular Biophysics

    Thermal fluctuations of immature SOD1 lead to separate folding and misfolding pathways

    Ashok Sekhar, Jessica AO Rumfeldt ... Lewis E Kay
    Solution NMR spectroscopy reveals the energy landscape of immature Cu, Zn-superoxide dismutase and leads to atomic resolution structural models of transiently populated non-native oligomers.
    1. Structural Biology and Molecular Biophysics

    Patient-specific mutations impair BESTROPHIN1’s essential role in mediating Ca2+-dependent Cl- currents in human RPE

    Yao Li, Yu Zhang ... Tingting Yang
    A multidisciplinary platform featured by patient-derived RPEs is established to study the disease-causing mechanisms of BEST1 mutations, and demonstrates gene-supplemented rescue of the mutation-caused deficiency in Ca2+-dependent Cl- current in human RPE.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Critical role for isoprenoids in apicoplast biogenesis by malaria parasites

    Megan Okada, Krithika Rajaram ... Paul A Sigala
    Malaria parasites target a polyprenyl synthase enzyme to the apicoplast organelle and require its activity to produce long-chain linear isoprenoids necessary for apicoplast biogenesis.

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