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首页> 外文期刊>Antimicrobial agents and chemotherapy. >An A643V amino acid substitution in Upc2p contributes to azole resistance in well-characterized clinical isolates of Candida albicans.
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An A643V amino acid substitution in Upc2p contributes to azole resistance in well-characterized clinical isolates of Candida albicans.

机译:Upc2p中的A643V氨基酸取代有助于白色念珠菌临床特征充分的唑耐药性。

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摘要

The Candida albicans Upc2p transcription factor regulates ERG11, encoding the target of azole drugs. Gain-of-function mutations that contribute to resistance were recently identified in a series of sequential clinical isolates (N. Dunkel, T. T. Liu, K. S. Barker, R. Homayouni, J. Morschhauser, and P. D. Rogers, Eukaryot. Cell 7:1180-1190, 2008). In the present study, UPC2 was sequenced from a matched set of 17 isolates. An A643V substitution was present in all of the isolates in the series that overexpressed ERG11. Azole susceptibility, ergosterol levels, and expression of ERG genes were elevated in the A643V clinical isolates and in reconstructed strains.
机译:白色念珠菌Upc2p转录因子调节ERG11,编码唑类药物的靶标。最近在一系列连续的临床分离株中鉴定了导致耐药的功能获得性突变(N. Dunkel,TT Liu,KS Barker,R。Homayouni,J。Morschhauser和PD Rogers,Eukaryot。Cell7:1180- 1190,2008)。在本研究中,从匹配的17个分离株中对UPC2进行了测序。 A643V替代存在于过表达ERG11的系列的所有分离物中。在A643V临床分离株和重组菌株中,Azole敏感性,麦角固醇水平和ERG基因表达均升高。

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