14 results found
    1. Chromosomes and Gene Expression

    Six domesticated PiggyBac transposases together carry out programmed DNA elimination in Paramecium

    Julien Bischerour et al.
    The machinery that carries out programmed DNA rearrangements is composed of domesticated transposases. One is catalytically active, five play architectural function essential for the accuracy of the process.
    1. Ecology
    2. Evolutionary Biology
    C. elegans illustration

    The Natural History of Model Organisms: C. elegans outside the Petri dish

    Lise Frézal, Marie-Anne Félix
    To leverage the tools, resources and knowledge that exist for C. elegans so that we can study ecology, evolution and other aspects of biology, we need to understand the natural history of this important model organism.
    1. Developmental Biology
    2. Evolutionary Biology

    Domestic chickens activate a piRNA defense against avian leukosis virus

    Yu Huining Sun et al.
    To protect the germ line genome, chickens acquire new small RNA-based immune defense in response to recently endogenized retroviruses by turning a truncated provirus into a weapon.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    Hyperosmotic stress memory in Arabidopsis is mediated by distinct epigenetically labile sites in the genome and is restricted in the male germline by DNA glycosylase activity

    Anjar Wibowo et al.
    Transient adaptation to environmental fluctuations in plants is mediated through discrete epigenetic changes.
    1. Plant Biology

    Regulation of rice root development by a retrotransposon acting as a microRNA sponge

    Jungnam Cho, Jerzy Paszkowski
    Retrotransposon-derived messenger RNA plays a critical role in rice root development via sequestration of miR171, which suggests a novel trans-acting regulation by transposable elements.
    1. Ecology
    2. Evolutionary Biology

    Reconstructing the functions of endosymbiotic Mollicutes in fungus-growing ants

    Panagiotis Sapountzis et al.
    Domestication of endosymbiotic Mollicutes may have resolved nitrogen-recycling challenges for attine ants and enabled the evolutionary derived leaf-cutting ants to fully exploit their herbivorous niches.
    1. Evolutionary Biology
    2. Genetics and Genomics

    The yeast mating-type switching endonuclease HO is a domesticated member of an unorthodox homing genetic element family

    Aisling Y Coughlan et al.
    A family of homing genetic elements that look like inteins but work differently is the progenitor of the endonuclease that enables Saccharomyces cerevisiae to change its mating type.
    1. Structural Biology and Molecular Biophysics

    A bend, flip and trap mechanism for transposon integration

    Elizabeth R Morris et al.
    Structural and biochemical analyses of a eukaryotic DNA transpososome in the integration step reveal how mariner/Tc1 transposons are selectively integrated into a TA target sequence.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Structure of the germline genome of Tetrahymena thermophila and relationship to the massively rearranged somatic genome

    Eileen P Hamilton et al.
    The model organism Tetrahymena thermopile carries two nuclei with distinct genomes: an unrearranged germline genome with five chromosomes, and a somatic genome reduced in size by a third and with 181 chromosomes.
    1. Genetics and Genomics
    2. Plant Biology

    The MADS-box transcription factor PHERES1 controls imprinting in the endosperm by binding to domesticated transposons

    Rita A Batista et al.
    Jumping of transposable elements provides DNA-binding sites for the MADS-box transcription factor PHERES1, allowing the regulation of imprinted genes and other key endosperm development genes.

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