McGuire, TM
Carvajal, E.
Katzmann, D
Wagner, Marisa
[Department of Biology, The Catholic University of America, Washington, DC 20064, USA]
Moyerowley, WS.
Goffeau, André
[UCL]
Golin, J.
The yeast PDR1 locus encodes a member of the C6 zinc cluster family of transciptional regulatory proteins. Among the targets of PDR1 is the yeast PDR5 locus. The product of this gene is a member of the ATP-binding cassette (ABC) transmembrane protein family and plays a major role in inhibitor efflux. Mutations in PDR1 affect the relative level of PDR5 transcript and can therefore result in increased or decreased drug resistance. We isolated three second-site suppressors of a PDR1-7 semidominant hyper-resistant mutation. These mutants were drug hypersensitive, as compared with isogenic controls. Two of the three mutations contained alterations in a putative DNA-binding domain. Significantly, the mutant proteins exhibited reduced DNA-binding capacity.
Bibliographic reference |
McGuire, TM ; Carvajal, E. ; Katzmann, D ; Wagner, Marisa ; Moyerowley, WS. ; et. al. Analysis of second-site mutations that suppress the multiple drug resistance phenotype of the yeast PDR1-7 allele. In: Gene, Vol. 167, no. 1-2, p. 151-155 (1995) |
Permanent URL |
http://hdl.handle.net/2078.1/47410 |