The linker histone in Saccharomyces cerevisiae interacts with actin-related protein 4 and both regulate chromatin structure and cellular morphology

Milena Georgieva, Dessislava Staneva, Katya Uzunova, Toni Efremov, Konstantin Balashev, Masahiko Harata, George Miloshev

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Chromatin structure promotes important epigenetic mechanisms that regulate cellular fate by organizing, preserving and controlling the way by which the genetic information works. Our understanding of chromatin and its functions is sparse and not yet well defined. The uncertainty comes from the complexity of chromatin and is induced by the existence of a large number of nuclear proteins that influence it. The intricate interaction among all these structural and functional nuclear proteins has been under extensive study in the recent years. Here, we show that Saccharomyces cerevisiae linker histone physically interacts with Arp4p (actin-related protein 4) which is a key subunit of three chromatin modifying complexes - INO80, SWR1 and NuA4. A single - point mutation in the actin - fold domain of Arp4p together with the knock-out of the gene for the linker histone in S. cerevisiae severely abrogates cellular and nuclear morphology and leads to complete disorganizing of the higher levels of chromatin organization.

    Original languageEnglish
    Pages (from-to)182-192
    Number of pages11
    JournalInternational Journal of Biochemistry and Cell Biology
    Volume59
    DOIs
    Publication statusPublished - 2015 Feb

    Keywords

    • Actin-related protein 4 (Arp4p)
    • Chromatin
    • Chromatin remodeling
    • Hho1p
    • higher-order chromatin structure

    ASJC Scopus subject areas

    • Biochemistry
    • Cell Biology

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