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  • Title: Pot2, an inverted repeat transposon from the rice blast fungus Magnaporthe grisea.
    Author: Kachroo P, Leong SA, Chattoo BB.
    Journal: Mol Gen Genet; 1994 Nov 01; 245(3):339-48. PubMed ID: 7816044.
    Abstract:
    We report the cloning and characterisation of Pot2, a putative transposable element from Magnaporthe grisea. The element is 1857 bp in size, has 43-bp perfect terminal inverted repeats (TIRs) and 16-bp direct repeats within the TIRs. A large open reading frame, potentially coding for a transposase-like protein, was identified. This putative protein coding region showed extensive identity to that of Fot1, a transposable element from another phytopathogenic fungus, Fusarium oxysporum. Pot2, like the transposable elements Tc1 and Mariner of Caenorhabditis elegans and Drosophila, respectively, duplicates the dinucleotide TA at the target insertion site. Sequence analysis of DNA flanking 12 Pot2 elements revealed similarity to the consensus insertion sequence of Tc1. Pot2 is present at a copy number of approximately 100 per haploid genome and represents one of the major repetitive DNAs shared by both rice and non-rice pathogens of M. grisea.
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