Multiple Pdr1p/Pdr3p Binding Sites Are Essential for Normal Expression of the ATP Binding Cassette Transporter Protein-encoding Gene

David J. Katzmann; Timothy C. Hallstrom; Yannick Mahé; W. Scott Moye-Rowley

doi:10.1074/jbc.271.38.23049

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Multiple Pdr1p/Pdr3p Binding Sites Are Essential for Normal Expression of the ATP Binding Cassette Transporter Protein-encoding Gene

Journal article

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Multiple Pdr1p/Pdr3p Binding Sites Are Essential for Normal Expression of the ATP Binding Cassette Transporter Protein-encoding Gene

David J. Katzmann, Timothy C. Hallstrom, Yannick Mahé and W. Scott Moye-Rowley

The Journal of biological chemistry, Vol.271(38), pp.23049-23054

09/1996

DOI: 10.1074/jbc.271.38.23049

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Abstract

Saccharomyces cerevisiae has large number of genes that can be genetically altered to produce a multiple or pleiotropic drug resistance phenotype. The homologous zinc finger transcription factors Pdr1p and Pdr3p both elevate resistance to many drugs, including cycloheximide. This elevation in cycloheximide tolerance only occurs in the presence of an intact copy of the PDR5 gene that encodes a plasma membrane-localized ATP binding cassette transporter protein. Previously, we have found that a single binding site for Pdr3p present in the PDR5 promoter is sufficient to provide Pdr3p- responsive gene expression. In this study, we have found that there are three sites in the PDR5 5'-noncoding region that are closely related to one another and are bound by both Pdr1p and Pdr3p. These elements have been designated Pdr1p/Pdr3p response elements (PDREs), and their role in the maintenance of normal PDR5 expression has been analyzed. Mutations have been constructed in each PDRE and shown to eliminate Pdr1p/Pdr3p binding in vitro. Analysis of the effect of these mutant PDREs on normal PDR5 promoter function indicates that each element is required for wildtype expression and drug resistance. A single PDRE placed upstream of a yeast gene lacking its normal upstream activation sequence is sufficient to confer Pdr1p responsiveness to this heterologous promoter.

Details

Title: Subtitle: Multiple Pdr1p/Pdr3p Binding Sites Are Essential for Normal Expression of the ATP Binding Cassette Transporter Protein-encoding Gene
Creators: David J. Katzmann - University of Iowa
Timothy C. Hallstrom - University of Iowa
Yannick Mahé - Université Catholique de Louvain
W. Scott Moye-Rowley - University of Iowa
Resource Type: Journal article
Publication Details: The Journal of biological chemistry, Vol.271(38), pp.23049-23054
DOI: 10.1074/jbc.271.38.23049
ISSN: 0021-9258
eISSN: 1083-351X
Language: English
Date published: 09/1996
Academic Unit: Molecular Physiology and Biophysics; Internal Medicine
Record Identifier: 9984297505302771

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