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Construction of Vector for Functional Analysis of the Intrinsically Bent DNA in the ACE3 Replicator from Drosophila melanogaster

DOI: 10.4236/ojgen.2014.41002    3,301 Downloads   4,206 Views  

ABSTRACT

DNA replication is a crucial process for species survival, nevertheless it is not clear which factors define origin selection in multicellular eukaryotes. Developmental gene amplification systems, such as the one described during ovarian follicles development in Drosophila melanogaster, are useful tools for studying of DNA replication process in these organisms. We previously described that the well characterized third chromosome amplified domain of D. melanogater displays three intrinsically bent DNA sites: b1, localized at an amplification control element (ACE3), b2 and b3, both localized at the preferential origin ori-β. This proposal aimed to construct a Drosophila transformation vector, which contains a short deletion at the ACE3, in order to reduce the intrinsically bent DNA site b1, and analyze the functional role of this site in the gene amplification process. Through a series of cloning steps, we obtained a Big Parent vector derivative, containing a deletion at the positions 176-180 bp, inside the ACE3. The generation of a Drosophila transformation vector displays a reduced intrinsically bent DNA site in the third chromosome amplified domain, it will allow the analysis of the functional role of this curvature in developmental gene amplification, providing new insights on replication initiation in D. melanogaster and the function of intrinsically bent DNA sites.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Freitas, D. , Gimenes, F. , Fiorini, A. , Rando, F. , Neto, Q. and Fernandez, M. (2014) Construction of Vector for Functional Analysis of the Intrinsically Bent DNA in the ACE3 Replicator from Drosophila melanogaster. Open Journal of Genetics, 4, 8-15. doi: 10.4236/ojgen.2014.41002.

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