141 results found
    1. Microbiology and Infectious Disease

    Structural basis of host recognition and biofilm formation by Salmonella Saf pili

    Longhui Zeng et al.
    SafDAA-SafDAA structure and functional characterizations reveal a pili-mediated inter-cellular oligomerization mechanism for bacterial aggregation and biofilm formation in Salmonella enterica.
    1. Cell Biology

    Dynein–Dynactin–NuMA clusters generate cortical spindle-pulling forces as a multi-arm ensemble

    Masako Okumura et al.
    Optogenetic reconstitution reveals core functional modules and architecture of the cortical force-generating machinery in human cells.
    1. Cell Biology
    2. Plant Biology

    Host autophagy machinery is diverted to the pathogen interface to mediate focal defense responses against the Irish potato famine pathogen

    Yasin F Dagdas et al.
    Defense-related selective autophagy mediated by the antimicrobial autophagy cargo receptor NBR1/Joka2 is diverted to pathogen penetration sites to restrict plant colonization by the oomycete pathogen Phytophthora infestans.
    1. Chromosomes and Gene Expression

    Transcription factor clusters regulate genes in eukaryotic cells

    Adam JM Wollman et al.
    Transcription factors form clusters independently of the presence of DNA, which regulate target genes as opposed to individual monomers, addressing a longstanding question of how transcription factors can find gene targets so quickly.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sec17 (α-SNAP) and an SM-tethering complex regulate the outcome of SNARE zippering in vitro and in vivo

    Matthew L Schwartz et al.
    Sec17 is shown to have divergent effects on pre-fusion SNARE complex activity, depending on the state of SNARE zippering and HOPS, an SM-tether complex, controls the outcome of Sec17-SNARE engagement.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The Sec1/Munc18 protein Vps45 holds the Qa-SNARE Tlg2 in an open conformation

    Travis J Eisemann et al.
    Whereas in a paradigmatic structure an SM protein chaperone clamps its client SNARE shut, a second structure demonstrates that an SM protein can also hold its SNARE open to promote assembly.
    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. 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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure of Vps4 with circular peptides and implications for translocation of two polypeptide chains by AAA+ ATPases

    Han Han et al.
    Structural and biochemical studies indicate that AAA+ ATPase employ a general mechanism to translocate a variety of substrates, including extended polypeptides, hairpins, crosslinked chains, and chains conjugated to other molecules.
    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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