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  • Title: An unusual transposon encoding heat shock inducible and developmentally regulated transcripts in Dictyostelium.
    Author: Rosen E, Sivertsen A, Firtel RA.
    Journal: Cell; 1983 Nov; 35(1):243-51. PubMed ID: 6194899.
    Abstract:
    We have isolated and characterized a transposable element from Dictyostelium discoideum denoted Tdd-1. There are approximately 50 complete copies of the element per haploid genome and approximately 100-150 partial elements. Southern blots of DNA from different Dictyostelium discoideum strains show that Tdd-1 is a mobile element. Tdd-1 is 4.9 kb long, with 313 bp inverted repeats. These repeats lie near the termini, but unlike other transposable elements one end of Tdd-1 extends 36 bp past the repeat and the other extends 1 bp. Tdd-1 encodes a series of developmentally regulated transcripts, all with the same polarity, that increase dramatically in abundance after approximately 10 hr of development. We have also identified a heat shock inducible transcript of the opposite polarity.
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