title: Identification of a genomic DNA fragment containing the Drosophila melanogaster ovarian tumor gene (otu) and localization of regions governing its expression.
abstract: We have identified a genomic DNA fragment which restores fertility to mutants of the ovarian tumor locus (otu) of Drosophila melanogaster. Germ-line transformants bearing this fragment express otu mRNA with the same tissue specificity as, and at levels comparable to, the wild-type otu gene. Transcription from the otu promoter, P(otu), which lacks a TATA element, appears to be initiated at multiple transcription start points (tsp) within an 80-bp region. Deletion of sequences upstream of the tsp indicates that a region between nucleotides -190 and -310 is required for proper expression from the otu gene. A DNA fragment containing 452 bp upstream and 126 bp downstream from the tsp is able to direct expression of the Escherichia coli lacZ gene in the germ cells of the ovary and testis, indicating that cis-acting regulatory elements governing these expression patterns are located in a 578-bp region surrounding the multiple tsp.
authors.affiliation: Curriculum in Genetics, University of North Carolina, Chapel Hill 27599-3280.
authors.forename: A R
authors.initials: AR
authors.lastname: Comer
authors.forename: L L
authors.initials: LL
authors.lastname: Searles
authors.forename: L J
authors.initials: LJ
authors.lastname: Kalfayan
mesh_terms: D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D004252:DNA Mutational Analysis; D029721:Drosophila Proteins; D004331:Drosophila melanogaster / Q000235:genetics*; D005260:Female; D007301:Insect Hormones / Q000235:genetics*; D008969:Molecular Sequence Data; D009154:Mutation / Q000235:genetics; D011401:Promoter Regions, Genetic / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics; D011993:Recombinant Fusion Proteins / Q000235:genetics
chemical_list: D029721:Drosophila Proteins; D007301:Insect Hormones; D012333:RNA, Messenger; D011993:Recombinant Fusion Proteins; C061992:otu protein, Drosophila