cis -Acting Elements within the Candida albicans ERG11 Promoter Mediate the Azole Response through Transcription Factor Upc2p
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چکیده
منابع مشابه
The UPC2 promoter in Candida albicans contains two cis-acting elements that bind directly to Upc2p, resulting in transcriptional autoregulation.
In Candida albicans, ergosterol biosynthetic genes, including ERG11, which encodes the target of azole antifungal drugs, are regulated by the transcriptional regulator Upc2p. To initially characterize the promoter of the UPC2 gene, 5' rapid amplification of cDNA ends was used to identify two transcriptional initiation sites upstream of the ATG codon. The regions within the UPC2 promoter require...
متن کاملNucleotide substitutions in the Candida albicans ERG11 gene of azole-susceptible and azole-resistant clinical isolates.
One of the mechanisms of Candida albicans resistance to azole drugs used in antifungal therapy relies on increased expression and presence of point mutations in the ERG11 gene that encodes sterol 14α demethylase (14DM), an enzyme which is the primary target for the azole class of antifungals. The aim of the study was to analyze nucleotide substitutions in the Candida albicans ERG11 gene of azol...
متن کاملRole of Candida albicans transcription factor Upc2p in drug resistance and sterol metabolism.
In Candida albicans, drug resistance to clinically important antifungal drugs may be regulated through the action of transcription factors in a manner that may or may not be similar to regulation in Saccharomyces cerevisiae. A search of the C. albicans genome identified a single homolog of the S. cerevisiae transcription factor genes UPC2 (ScUPC2) and ECM22 (ScECM22) that have been associated w...
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Upc2p, a transcription factor of the zinc cluster family, is an important regulator of sterol biosynthesis and azole drug resistance in Candida albicans. To better understand Upc2p function in C. albicans, we used genomewide location profiling to identify the transcriptional targets of Upc2p in vivo. A triple hemagglutinin epitope, introduced at the C terminus of Upc2p, conferred a gain-of-func...
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The in vitro activity of three different azoles (fluconazole, FLC, voriconazole, VRC and ketoconazole, KTC) was determined and correlated with the single nucleotide polymorphisms (SNPs) in a “hot spot” region of the ERG11 gene in a collection of 52 arbitrarily selected C. albicans strains isolated from Sardinian subjects with oropharyngeal candidiasis. Among the strains evaluated, 23.1% were re...
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ژورنال
عنوان ژورنال: Eukaryotic Cell
سال: 2007
ISSN: 1535-9778,1535-9786
DOI: 10.1128/ec.00331-06