34 results found
    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

    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. 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.
    1. Chromosomes and Gene Expression

    Noncoding RNA-nucleated heterochromatin spreading is intrinsically labile and requires accessory elements for epigenetic stability

    R A Greenstein et al.
    Heterochromatin spreading in fission yeast predominantly produces intergenerationally unstable outcomes, requiring an accessory element that represses histone turnover.
    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. 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. Developmental Biology
    2. Plant Biology

    Selective egg cell polyspermy bypasses the triploid block

    Yanbo Mao et al.
    A ménàge à trois introduces extra DNA only to plant embryos, thus skipping endosperm-induced seed hybridization barriers.
    1. Microbiology and Infectious Disease

    Modifications at K31 on the lateral surface of histone H4 contribute to genome structure and expression in apicomplexan parasites

    Fabien Sindikubwabo et al.
    A versatile acetylation-methylation switch at lysine 31 on the lateral surface of histone H4 contributes to chromatin structure in apicomplexan parasites.
    1. Developmental Biology

    A population of adult satellite-like cells in Drosophila is maintained through a switch in RNA-isoforms

    Hadi Boukhatmi, Sarah Bray
    Adult muscle progenitors evade differentiation by expressing a short RNA isoform of Zfh1 which is insensitive to regulation by a micro-RNA.

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