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  • 1
    Electronic Resource
    Electronic Resource
    Athila, a new retroelement from Arabidopsis thaliana (1995)
    Springer
    Plant molecular biology 29 (1995), S. 441-452 
    Details
    ISSN: 1573-5028
    Keywords: repetitive DNA ; retroviral element ; heterochromatin ; transposon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract An analysis of Arabidopsis thaliana heterochromatic regions allowed the identification of a new family of retroelements called Athila. These 10.5 kb elements, representing ca. 0.3% of the genome, present several features of retrotransposons and retroviruses. Athila elements are flanked by 1.5 kb long terminal repeats (LTR) that are themselves bounded by 5 bp perfect inverted repeats. These LTRs start and end with the retroviral consensus 5′TG...CA3′ nucleotides. A putative tRNA-binding site and a polypurine tract are found adjacent to the 5′ and 3′ LTR respectively. The central domain is composed of two long open reading frames (ORFs) of 935 and 694 amino acids. Despite several indications of recent transposition activity, the translation of these ORFs failed to reveal significant homology with proteins associated to retrotransposition. We suggest that the Athila family could result from the transduction and dispersion of a cellular gene by a retrotransposon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00020976
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    DNA regions flanking the major Arabidopsis thaliana satellite are principally enriched in Athila retroelement sequences (1996)
    Springer
    Genetica 97 (1996), S. 141-151 
    Details
    ISSN: 1573-6857
    Keywords: Arabidopsis ; heterochromatin ; retroviral element ; satellite DNA ; transposon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract An analysis of Arabidopsis thaliana heterochromatic regions revealed that genomic sequences immediately flanking the major 180 bp satellite are essentially made of middle repetitive sequences and that most of these sequences correspond to defective Athila retroelements. Using YAC and λ clones, we evaluated the distribution of Athila elements in the Arabidopsis genome and showed that, despite the presence of numerous euchromatic copies, these elements are especially concentrated in or near heterochromatic regions. Sequencing of the various DNA transitions between satellite and Athila repeats provides strong evidence that most of the heterochromatic elements retrotransposed directly into 180 bp satellite clusters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00054621
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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