The technique of two-dimensional electrophoresis (2-DE or 2D-PAGE) was used to analyze the protein expression differences between the wild type Agaricus bisporus CGMCC No. 0214 and its substratedecomposing ability degenerated strains 0214-3, 0214-5. As a result, two proteins were found to be up- and down-expressed, respectively, with obvious and repeatable profiles in both degenerated strains when grown in a liquid culture. Based on the results of MALDI-TOF/MS analysis and database searching, these two proteins were identified as an actin and a putative NADH dehydrogenase iron-sulfur protein 3, respectively. The results of this study provided a marker on the proteomics level for further study of the molecular mechanism of substrate-decomposing ability degeneration in A. bisporus.%对双孢蘑菇CGMCC No.0214及其基质降解能力退化菌株0214-3、0214-5进行了蛋白质双向电泳(2-DE或2D-PAGE)分析,发现了2个明显的、可重复的差异蛋白质,在退化菌株中分别为上调和下调表达,且2个退化菌株表现一致.根据质谱(MALDI-TOF/MS)分析和数据库检索结果,2个差异蛋白质初步鉴定为肌动蛋白和NADH脱氢酶铁硫蛋白3.
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