Mäder Ulrike, Homuth Georg, Scharf Christian, Büttner Knut, Bode Rüdiger, Hecker Michael
Institut für Mikrobiologie, Ernst-Moritz-Arndt-Universität Greifswald, D-17487 Greifswald, Germany.
J Bacteriol. 2002 Aug;184(15):4288-95. doi: 10.1128/JB.184.15.4288-4295.2002.
A comprehensive study of Bacillus subtilis gene expression patterns in response to amino acid availability was performed by means of proteomics and transcriptomics. The methods of two-dimensional protein gel electrophoresis and DNA macroarray technology were combined to analyze cells exponentially grown in minimal medium with and without 0.2% Casamino Acids (CAA). This approach revealed about 120 genes predominantly involved in amino acid biosynthesis, sporulation, and competence, which were downregulated in CAA-containing medium. Determination of sporulation frequencies confirmed the physiological relevance of the expression data.
通过蛋白质组学和转录组学方法,对枯草芽孢杆菌在氨基酸可利用情况下的基因表达模式进行了全面研究。将二维蛋白质凝胶电泳和DNA微阵列技术相结合,分析了在添加和不添加0.2%酪蛋白氨基酸(CAA)的基本培养基中指数生长的细胞。该方法揭示了约120个主要参与氨基酸生物合成、芽孢形成和感受态的基因,它们在含CAA的培养基中表达下调。芽孢形成频率的测定证实了表达数据的生理相关性。