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Analysis of the ftz upstream element : germ layer-specific enhancers are independently autoregulated
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 155976
Author(s) Pick, L; Schier, A; Affolter, M; Schmidt-Glenewinkel, T; Gehring, W J
Author(s) at UniBasel Affolter, Markus
Schier, Alexander
Gehring, Walter Jakob
Year 1990
Title Analysis of the ftz upstream element : germ layer-specific enhancers are independently autoregulated
Journal Genes & development
Volume 4
Number 7
Pages / Article-Number 1224-39
Keywords Animals; Base Sequence; Drosophila Proteins; Drosophila melanogaster/embryology/*genetics; Embryo; Nonmammalian/ultrastructure; Embryonic and Fetal Development; *Enhancer Elements; Genetic; Fushi Tarazu Transcription Factors; *Gene Expression Regulation; *Genes; Homeobox; *Homeodomain Proteins; Insect Hormones/*genetics; Molecular Sequence Data; Morphogenesis; Recombinant Fusion Proteins/biosynthesis; Transcription
Abstract

The Drosophila fushi tarazu (ftz) upstream element is an enhancer-like element that is required for the correct expression of ftz in developing embryos and that directs transcription from a minimal promoter in a ftz-like seven-striped pattern. Using a deletion analysis, we have identified several independent cis-regulatory elements in the upstream element. A distal enhancer directs fusion gene expression in seven stripes primarily in the mesoderm. A more complex proximal enhancer contains a mesodermally active element and a second element with which it interacts to generate seven stripes in the ectoderm. Striped expression directed by each enhancer is ftz-dependent, and each contains binding sites for purified ftz homeo domain. We suggest that ftz protein acts in combination with germ layer-restricted transcription factors directly and positively to regulate the transcription of its own gene.

Publisher Cold Spring Harbor Laboratory
ISSN/ISBN 0890-9369
edoc-URL http://edoc.unibas.ch/dok/A5258972
Full Text on edoc No
Digital Object Identifier DOI 10.1101/gad.4.7.1224
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/1976571
ISI-Number WOS:A1990DN34300013
Document type (ISI) Journal Article
 
   

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19/04/2024