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. 1989 Dec;86(23):9451-5.
doi: 10.1073/pnas.86.23.9451.

Chromosome-breaking structure in maize involving a fractured Ac element

E Ralston  1 , J English, H K Dooner
Affiliations

Chromosome-breaking structure in maize involving a fractured Ac element

E Ralston et al. Proc Natl Acad Sci U S A. 1989 Dec.

Abstract

Chromosome breakage in maize can result from an interaction between certain transposable elements. When an Ac (Activator) element and a state I Ds (Dissociation) element are present together in the genome, either linked or unlinked, breaks occur regularly at the locus of the Ds element. We show here that breaks occur with high frequency at or near the locus of a structure consisting of a 2.5-kilobase (kb) terminally deleted or fractured Ac element very tightly linked to a second, intact 4.6-kb Ac element. This structure has the features of a macrotransposon and may behave like one. Loss of the tight linkage abolishes chromosome breakage. A model based on transposition of the macrotransposon is proposed to explain the chromosome-breaking properties of Ac and Ds.

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References

    1. Cell. 1983 Sep;34(2):383-93 - PubMed
    1. Genetics. 1941 Mar;26(2):234-82 - PubMed
    1. EMBO J. 1984 Aug;3(8):1713-6 - PubMed
    1. Genetics. 1984 Oct;108(2):471-85 - PubMed
    1. Exp Cell Res. 1981 Dec;136(2):461-5 - PubMed

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