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Two independent cis-acting elements regulate the sex- and tissue-specific expression of yp3 in Drosophila melanogaster

Published online by Cambridge University Press:  14 April 2009

Elaine Ronaldson
Affiliation:
Institute of Cell and Molecular Biology, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JR, Tel: 031 650 5368, fax: 031 668 3870, E-mail: MBOWNES@srv0.bio.ed.ac.uk
Mary Bownes*
Affiliation:
Institute of Cell and Molecular Biology, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JR, Tel: 031 650 5368, fax: 031 668 3870, E-mail: MBOWNES@srv0.bio.ed.ac.uk
*
* Corresponding author.

Summary

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In Drosophila, the three yolk protein (yp) genes are transcribed in a sex-, tissue- and developmentally specific manner, providing an ideal system in which to investigate the factors involved in their regulation. The yolk proteins are synthesized in the fat body of adult females, and in the ovarian follicle cells surrounding the developing oocyte during stages 8–10 of oogenesis. We report here an analysis of the yolk protein 3 (yp3) gene and its flanking sequences by means of P-element mediated germ-line transformation and demonstrate that a 747 bp promoter region is sufficient to direct sex-specific expression in the female fat body and both the temporal- and cell-type-specificity of expression during oogenesis. Two elements that independently govern yp3 transcription in these tissues have been separated and no other sequences in the upstream, downstream or coding regions have been identified that are autonomously involved in yp3 expression.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1995

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