153 results found
    1. Structural Biology and Molecular Biophysics

    Structure of a type IV pilus machinery in the open and closed state

    Vicki AM Gold et al.
    Electron cryo-tomography reveals a huge conformational change in the secretin domain of the type IV pilus machinery that occurs when the channel opens for pilus extrusion.
    1. Structural Biology and Molecular Biophysics

    Allosteric signalling in the outer membrane translocation domain of PapC usher

    Irene Farabella et al.
    Input from computational models has enabled the detection of allosteric communication that modulates the gating mechanism of a bacterial outer-membrane protein.
    1. Chromosomes and Gene Expression

    piRNA-guided co-transcriptional silencing coopts nuclear export factors

    Martin H Fabry et al.
    A member of the Drosophila Nuclear Export Factor (Nxf) family, Nxf2, forms part of the piRNA-dependent co-transcriptional silencing complex and is essential for transposon repression in fly ovaries.
    1. Stem Cells and Regenerative Medicine

    Ovaries absent links dLsd1 to HP1a for local H3K4 demethylation required for heterochromatic gene silencing

    Fu Yang et al.
    A Drosophila fertility gene is identified that acts as a linker between HP1a and local H3K4 demethylation during HP1a-mediated gene silencing that is required for ovary development and transposon silencing..
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    SNPC-1.3 is a sex-specific transcription factor that drives male piRNA expression in C. elegans

    Charlotte P Choi et al.
    snpc-1.3 specifies male piRNA transcription and is regulated by the sex determination pathway.
    1. Microbiology and Infectious Disease

    Interspecies interactions induce exploratory motility in Pseudomonas aeruginosa

    Dominique H Limoli et al.
    Pseudomonas aeruginosa coordinates invasion and destruction of Staphylococcus aureus communities by modulating single-cell and collective motility.
    1. Stem Cells and Regenerative Medicine

    Wnt signaling-mediated redox regulation maintains the germ line stem cell differentiation niche

    Su Wang et al.
    Wnt signaling regulates cellular redox in the germline stem cell differentiation niche via a novel regulatory mechanism, thereby controlling germ line stem cell progeny differentiation.
    1. Stem Cells and Regenerative Medicine

    A mex3 homolog is required for differentiation during planarian stem cell lineage development

    Shu Jun Zhu et al.
    The planarian mex3-1 gene is required for non-stem cell fates and suppresses a stem cell fate in differentiating cells.
    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. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Functional role of the type 1 pilus rod structure in mediating host-pathogen interactions

    Caitlin N Spaulding et al.
    The helical rod structure and dynamic spring-like properties of the type 1 pilus are evolutionarily fine-tuned for functioning in host-pathogen interactions during urinary tract infection and gut colonization.

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