Genetics, Vol 139, 321-326, Copyright © 1995


INVESTIGATIONS

Molecular Characterization of the Breakpoints of an Inversion Fixed Between Drosophila melanogaster and D. subobscura

S. Cirera, J. M. Martin-Campos, C. Segarra and M. Aguade
Department de Genetica, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain

The two breakpoints of a chromosomal inversion fixed since the split of Drosophila melanogaster and D. subobscura lineages have been isolated and sequenced in both species. The regions spanning the breakpoints initially were identified by the presence of two signals after interspecific in situ hybridization on polytene chromosomes. Interspecific comparison of the sequenced regions allowed us to delineate the location of the breakpoints. Close to one of these breakpoints a new transcription unit (bcn92) has been identified in both species. The inversion fixed between D. melanogaster and D. subobscura does not seem to have broken any transcription unit. Neither complete nor defective transposable elements were found in the regions encompassing the breakpoints. Short thymine-rich sequences (30-50 bp long) have been found bordering the breakpoint regions. Although alternating Pur-Pyr sequences were detected, these putative target sites for topoisomerase II were not differentially clustered in the breakpoints.


This article has been cited by other articles:


Home page
GeneticsHome page
J. Gonzalez, F. Casals, and A. Ruiz
Testing Chromosomal Phylogenies and Inversion Breakpoint Reuse in Drosophila
Genetics, January 1, 2007; 175(1): 167 - 177.
[Abstract] [Full Text] [PDF]


Home page
Proc. Natl. Acad. Sci. USAHome page
I. V. Sharakhov, B. J. White, M. V. Sharakhova, J. Kayondo, N. F. Lobo, F. Santolamazza, A. della Torre, F. Simard, F. H. Collins, and N. J. Besansky
Breakpoint structure reveals the unique origin of an interspecific chromosomal inversion (2La) in the Anopheles gambiae complex
PNAS, April 18, 2006; 103(16): 6258 - 6262.
[Abstract] [Full Text] [PDF]


Home page
GeneticsHome page
L. M. Matzkin, T. J. S. Merritt, C.-T. Zhu, and W. F. Eanes
The Structure and Population Genetics of the Breakpoints Associated With the Cosmopolitan Chromosomal Inversion In(3R)Payne in Drosophila melanogaster
Genetics, July 1, 2005; 170(3): 1143 - 1152.
[Abstract] [Full Text] [PDF]


Home page
Genome ResHome page
S. Richards, Y. Liu, B. R. Bettencourt, P. Hradecky, S. Letovsky, R. Nielsen, K. Thornton, M. J. Hubisz, R. Chen, R. P. Meisel, et al.
Comparative genome sequencing of Drosophila pseudoobscura: Chromosomal, gene, and cis-element evolution
Genome Res., January 1, 2005; 15(1): 1 - 18.
[Abstract] [Full Text] [PDF]


Home page
Mol Biol EvolHome page
F. Casals, M. Caceres, and A. Ruiz
The Foldback-like Transposon Galileo Is Involved in the Generation of Two Different Natural Chromosomal Inversions of Drosophila buzzatii
Mol. Biol. Evol., May 1, 2003; 20(5): 674 - 685.
[Abstract] [Full Text] [PDF]


Home page
GeneticsHome page
J. Gonzalez, J. M. Ranz, and A. Ruiz
Chromosomal Elements Evolve at Different Rates in the Drosophila Genome
Genetics, July 1, 2002; 161(3): 1137 - 1154.
[Abstract] [Full Text] [PDF]


Home page
ScienceHome page
M. Cáceres, J. M. Ranz, A. Barbadilla, M. Long, and A. Ruiz
Generation of a Widespread Drosophila Inversion by a Transposable Element
Science, July 16, 1999; 285(5426): 415 - 418.
[Abstract] [Full Text]


Home page
GeneticsHome page
J. Rozas, C. Segarra, G. Ribó, and M. Aguadé
Molecular Population Genetics of the rp49 Gene Region in Different Chromosomal Inversions of Drosophila subobscura
Genetics, January 1, 1999; 151(1): 189 - 202.
[Abstract] [Full Text]


Home page
Proc. Natl. Acad. Sci. USAHome page
K. D. Mathiopoulos, A. della Torre, V. Predazzi, V. Petrarca, and M. Coluzzi
Cloning of inversion breakpoints in the Anopheles gambiae complex traces a transposable element at the inversion junction
PNAS, October 13, 1998; 95(21): 12444 - 12449.
[Abstract] [Full Text] [PDF]


Home page
Genome ResHome page
M. Caceres, M. Puig, and A. Ruiz
Molecular Characterization of Two Natural Hotspots in the Drosophila buzzatii Genome Induced by Transposon Insertions
Genome Res., August 1, 2001; 11(8): 1353 - 1364.
[Abstract] [Full Text] [PDF]