• Login
    View Item 
    •   Oxy Scholar Home
    • Biology
    • Biology URC Student Scholarship
    • View Item
    •   Oxy Scholar Home
    • Biology
    • Biology URC Student Scholarship
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Cloning of rpoS, a global regulator of stress induced genes, from the bacterial predator Bdellovibrio bacteriovorus .

    Thumbnail
    Author
    Baron, Desiree
    Issue
    urc_student; urc_student
    Date
    2000-01-01 0:00
    Metadata
    Show full item record
    URI
    https://scholar.oxy.edu/handle/20.500.12711/473
    Abstract
    The rpoS gene of Gram negative bacteria encodes an alternative sigma factor controlling the expression of a wide variety of genes involved with stress survival, nutrient starvation, and rapid changes in environmental conditions. Bdellovibrio bacteriovorus is a bacterium capable of attacking, invading, and parasitizing other Gram negative bacteria; this unusual microbe alternates between a free swimming "attack" phase in search of prey cells and the intraperiplasmic "parasitic" phase growing at the expense of the host cell. Bdellovibrio clearly experiences many changes in its environment during this alternation, including nutrient status (starvation outside host cells, adequate nutrition within host cells) and possible stressful conditions (osmotic stress within the periplasm of host cells). As a first step toward analysis of the genetic and biochemical strategies used by Bdellovibrio to support its unusual prokaryotic lifestyle, the rpoS gene of Bdellovibrio has been isolated, using a unique functional complementation assay with an E. coli reporter gene construct. We hope that analysis of the rpoS gene of Bdellovibrio will yield insights into the types and numbers of gene products (and the regulation of such genes) used by Bdellovibrio during its transition from "attack phase" to "parasitic phase" life.
    Collections
    • Biology URC Student Scholarship

    Browse

    All of Oxy ScholarCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsJournal TitleJournal IssueThis CollectionBy Issue DateAuthorsTitlesSubjectsJournal TitleJournal Issue

    My Account

    LoginRegister

    DSpace software copyright © 2002-2021  DuraSpace
    Contact Us | Send Feedback
    DSpace Express is a service operated by 
    Atmire NV