|Citation||Roiha, H., Glover, D.M. (1981). Duplicated rDNA sequences of variable lengths flanking the short type I insertions in the rDNA of Drosophila melanogaster. Nucleic Acids Res. 9(): 5521--5532. (Export to RIS)|
|Publication Type||Research paper|
|PubMed Abstract||We describe cloned segments of rDNA that contain short type I insertions of differing lengths. These insertions represent a coterminal subset of sequences from the right hand side of the major 5kb type I insertion. Three of these shorter insertions are flanked on both sides by a short sequence present as a single copy in uninterrupted rDNA units. The duplicated segment is 7, 14 and 15 nucleotides in the different clones. In this respect, the insertions differ from the 5kb type I insertion, where the corresponding sequence is found only at the right hand junction and where at the left hand side there is a deletion of 9 nucleotides of rDNA (Roiha et al.,1981). One clone is unusual in that it contains two type I insertions, one of which is flanked by a 14 nucleotide repeat. The left hand junction of the second insertion occurs 380 nucleotides downstream in the rDNA unit from the first. It has an identical right hand junction to the other elements and the 380 nucleotide rDNA sequence is repeated on both sides of the insertion. We discuss the variety of sequence rearrangements of the rDNA which flank type I insertions.|
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|Language of Publication||English|
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|Also Published As|
|Abbreviation||Nucleic Acids Res.|
|Title||Nucleic Acids Research|
|Data from Reference|