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Gene organization of a novel defensin of Ixodes ricinus: first annotation of an intron/exon structure in a hard tick defensin gene and first evidence of the occurrence of two isoforms of one member of the arthropod defensin family

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F07%3A00087415" target="_blank" >RIV/60077344:_____/07:00087415 - isvavai.cz</a>

  • Alternative codes found

    RIV/60076658:12310/07:00008029

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Gene organization of a novel defensin of Ixodes ricinus: first annotation of an intron/exon structure in a hard tick defensin gene and first evidence of the occurrence of two isoforms of one member of the arthropod defensin family

  • Original language description

    Antimicrobial peptides (defensins) are effectors of the immune system. Herein we describe a novel Ixodes ricinus defensin gene(s), we analyze its structure, and we compare it with other known antimicrobial peptides from different tick species. For the first time, an intron/exon structure is discovered in a hard-tick defensin gene. The intron/exon genomic organization of the gene is similar to the organization in Ornithodoros moubata, but not to that of the intronless defensins of Dermacentor variabilisand Ixodes scapularis. The analysis of the deduced amino acid sequences of different recombinants from the I. ricinus cDNA library reveals the presence of two defensin isoforms with 3 amino acid substitutions. Whether or not these substitutions affect the biological properties of the peptides is currently unknown. The expression of the defensin gene is strongly induced in the tick midgut after infection with Borrelia burgdorferi.

  • Czech name

    Genová organizace nového genu defensinu klíštěte Ixodes ricinus: první záznam intron/exonové struktury genu defensinu u tvrdého klíštěte Ixodes ricinus a první evidence výskytu dvou forem jednoho členu rodiny defensinů u členovců

  • Czech description

    Antimikrobiální peptidy (defensiny) jsou efektory imunního systému. Zde popisujeme nový gen/geny defensinu Ixodes ricinus, analyzujeme jeho strukturu a porovnáváme ho s dalšími známými antimikrobiálními peptidy u různých klíšťat. Poprvé byla zjištěna intron/exonová struktura genu defensinu u tvrdého klíštěte. Intron/exonová genomová organizace popisovaného genu I. ricinus je podobna této u Ornithodoros moubata, nikoliv u Dermacentor variabilis nebo Ixodes scapularis. Analýza odvozených aminokyselinovýchsekvencí různých rekombinantů z cDNA knihovny I. ricinus odhalila přítomnost dvou izoforem defensinu se třemi aminokyselinovými záměnami. Zdali tyto záměny ovlivňují biologické vlastnosti peptidů či nikoliv není stále známo. Exprese genu defensinu je silně indukována ve střevě klíštěte po infekci borreliemi.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    GJ - Diseases and animal vermin, veterinary medicine

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Insect Molecular Biology

  • ISSN

    0962-1075

  • e-ISSN

  • Volume of the periodical

    16

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    7

  • Pages from-to

    501-507

  • UT code for WoS article

  • EID of the result in the Scopus database