Genomic and structural organization of Drosophila melanogaster G elements (original) (raw)

Journal Article

,

1

Dipartimento di Biologia e Patologia Cellulare e Molecolare, University of Naples, Second Medical School

Italy

2

Istituto Intemazionale di Genetica e Biofisica, CNR, Via Guglielmo Marconi 10

80125 Naples, Italy

* To whom reprint requests should be sent. Present address: c/o European Molecular Biology Laboratory, Postfach 10.2209, 6900 Heidelberg 1, FRG

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,

2

Istituto Intemazionale di Genetica e Biofisica, CNR, Via Guglielmo Marconi 10

80125 Naples, Italy

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2

Istituto Intemazionale di Genetica e Biofisica, CNR, Via Guglielmo Marconi 10

80125 Naples, Italy

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Received:

18 November 1985

Accepted:

17 December 1985

Published:

26 January 1986

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Pier Paolo Di Nocera, Franco Graziani, Giovanni Lavorgna, Genomic and structural organization of Drosophila melanogaster G elements , Nucleic Acids Research, Volume 14, Issue 2, 26 January 1986, Pages 675–691, https://doi.org/10.1093/nar/14.2.675
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Abstract

The properties and the genomic organization of G elements, a moderately repeated DNA family of D. melanogaster , are reported. G elements lack terminal repeats, generate target site duplications at the point of insertion and exhibit at one end a stretch of A residues of variable lenght. In a large number of recombinant clones analyzed G elements occur in tandem arrays, interspersed with specific ribosomal DNA (rDNA) segments. This arrangement results from the insertion of members of the G family within the nontranscribed spacer (NTS) of rDNA units. Similarity of the site of integration of G elements to that of ribosomal DNA insertions suggests that distinct DNA sequences might have been inserted into rDNA through a partly common pathway.

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