869 results found
    1. Structural Biology and Molecular Biophysics

    Limited dishevelled/Axin oligomerization determines efficiency of Wnt/β-catenin signal transduction

    Wei Kan et al.
    In vitro and in cellulo characterization of oligomerization by the cytoplasmic Wnt effector dishevelled and its partner Axin provide new mechanistic principles for Wnt/β-catenin signaling.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    A single-parasite transcriptional atlas of Toxoplasma Gondii reveals novel control of antigen expression

    Yuan Xue et al.
    Single-cell RNA-sequencing resolves the transcriptional landscape of asexual development in Toxoplasma gondii, revealing concerted genetic programs to Plasmodiumfalciparum and a novel transcriptional factor that controls antigen switching.
    1. Structural Biology and Molecular Biophysics

    Gating and selectivity mechanisms for the lysosomal K+ channel TMEM175

    SeCheol Oh et al.
    Structures of the non-canonical potassium channel TMEM175 in open and closed states reveal unique mechanisms for channel gating and the selective permeation of K+ ions.
    1. Developmental Biology
    2. Neuroscience

    Extracellular matrix-inducing Sox9 promotes both basal progenitor proliferation and gliogenesis in developing neocortex

    Ayse Güven et al.
    Transcription factor Sox9 has an important role in neocortex expansion, where its expression in basal progenitors increases proliferation, induces premature gliogenesis and promotes the expression of extracellular matrix components.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Guanidine hydrochloride reactivates an ancient septin hetero-oligomer assembly pathway in budding yeast

    Courtney R Johnson et al.
    A naturally-occurring small molecule acts as a chemical chaperone in vivo to alter the folding of a budding yeast septin and promote an oligomerization pathway that was lost during evolution.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Distinct RanBP1 nuclear export and cargo dissociation mechanisms between fungi and animals

    Yuling Li et al.
    Animal RanBP1 nuclear export and cargo dissociation mechanisms are surprisingly different from yeast, due to mutations of critical residues, leading to greater nuclear transport efficiency and higher energy cost.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Synergy between RecBCD subunits is essential for efficient DNA unwinding

    Rani Zananiri et al.
    A new optical tweezers assay sheds light on the mechanism of cooperation and force generation by the subunits of RecBCD, critical for the repair of double strand breaks in bacteria.
    1. Genetics and Genomics

    Firefly genomes illuminate parallel origins of bioluminescence in beetles

    Timothy R Fallon et al.
    The first genomic view of beetle luciferase evolution indicates evolutionary independence of luciferase between fireflies and click-beetles, and provide valuable datasets which will accelerate the discovery of new biotechnological tools.
    1. Evolutionary Biology
    2. Structural Biology and Molecular Biophysics

    Evolutionary pathways of repeat protein topology in bacterial outer membrane proteins

    Meghan Whitney Franklin et al.
    There is a strand-based evolutionary mechanism for the diversification of outer membrane proteins, which has implications for how repeat proteins are created and for how outer membrane proteins fold.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Insights into the key determinants of membrane protein topology enable the identification of new monotopic folds

    Sonya Entova et al.
    Key sequence motifs, defined using the first reported structure of a monotopic membrane protein with a reentrant helix, enable identification of new monotopic membrane protein families previously predicted as membrane spanning.

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