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30 results found
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Holocentromeres are dispersed point centromeres localized at transcription factor hotspots

    Florian A Steiner, Steven Henikoff
    Worm holocentromeres show a polycentric distribution, with each site containing a single centromeric nucleosome and also being targeted by multiple transcription factors.
    1. Chromosomes and Gene Expression

    The budding yeast Centromere DNA Element II wraps a stable Cse4 hemisome in either orientation in vivo

    Steven Henikoff et al.
    A stable tetrameric nucleosome occupies the central segment of each ∼120-bp budding yeast centromere in two rotational phases of both reflectional orientations in vivo.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Imaging the fate of histone Cse4 reveals de novo replacement in S phase and subsequent stable residence at centromeres

    Jan Wisniewski et al.
    Internally tagged, functional Cse4/CENP-A/CenH3 histone variant is exclusively centromeric and stable through the budding yeast cell cycle after replacement in S phase.
    1. Neuroscience

    A long non-coding RNA is required for targeting centromeric protein A to the human centromere

    Delphine Quénet, Yamini Dalal
    A non-coding RNA-based targeting mechanism could potentially epigenetically maintain specialized chromatin structures, such as the centromere, in vivo.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Recurrent loss of CenH3 is associated with independent transitions to holocentricity in insects

    Ines A Drinnenberg et al.
    CenH3, the defining component of centromeres in almost all eukaryotes, was independently lost in four insect lineages that transitioned from monocentricity to holocentricity.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Juxtaposition of heterozygous and homozygous regions causes reciprocal crossover remodelling via interference during Arabidopsis meiosis

    Piotr A Ziolkowski et al.
    Heterozygosity changes the balance between interfering and non-interfering crossovers during Arabidopsis meiosis.
    1. Chromosomes and Gene Expression

    Catastrophic chromosomal restructuring during genome elimination in plants

    Ek Han Tan et al.
    Complex chromosomal rearrangements similar to those described in cancer and developmental syndromes occur in plants during postzygotic genome elimination, a centromeric-derived incompatibility.
    1. Chromosomes and Gene Expression

    Transcription dynamically patterns the meiotic chromosome-axis interface

    Xiaoji Sun et al.
    Distributed cohesin rings flexibly tether the axial element structure of meiotic chromosomes to the underlying chromatin to readily accommodate ongoing transcription.
    1. Chromosomes and Gene Expression

    A histone H3K9M mutation traps histone methyltransferase Clr4 to prevent heterochromatin spreading

    Chun-Min Shan et al.
    A lysine-to-methionine mutation in histone H3 dominantly blocks histone H3K9 methylation by trapping its methyltransferase.
    1. Chromosomes and Gene Expression

    An efficient targeted nuclease strategy for high-resolution mapping of DNA binding sites

    Peter J Skene, Steven Henikoff
    CUT&RUN (Cleavage Under Targets & Release Using Nuclease) profiles antibody-targeted DNA-binding proteins in situ with high resolution and low background, providing a simple, robust and scalable alternative to chromatin immunoprecipitation.

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