中国畜牧兽医

• 疾病防治 • 上一篇    

牛源大肠杆菌不同生长阶段的比较蛋白质组学研究

赵小伟,杨永新,程广龙,黄冬维,赵辉玲   

  1. 安徽省农业科学院畜牧兽医研究所,安徽合肥 230031
  • 收稿日期:2014-01-27 出版日期:2014-08-20 发布日期:2014-08-22
  • 通讯作者: 程广龙(1964—),男,研究方向:奶牛健康养殖。
  • 作者简介:赵小伟(1985—),男,安徽人,硕士,研究方向:奶牛健康养殖。
  • 基金资助:

    安徽省农业科学院院长青年基金项目(12B0412);科技部农业科技成果转化资金项目(2013GB2C300216)。

Comparative Proteomic Analysis of Escherichia coli Protein during Growth Phase

ZHAO Xiao-wei,YANG Yong-xin,CHENG Guang-long,HUANG Dong-wei,ZHAO Hui-ling   

  1. Institute of Animal Sciences,Anhui Academy of Agricultural Sciences,Hefei 230031,China
  • Received:2014-01-27 Online:2014-08-20 Published:2014-08-22

摘要: 为了分析牛源大肠杆菌生长周期中不同阶段蛋白的表达变化,本研究采用二维凝胶电泳结合质谱技术分离并鉴定了大肠杆菌生长周期中延迟期、对数期和平稳期菌体全蛋白的表达变化。结果显示,大肠杆菌菌体全蛋白组成在延迟期、对数期和平稳期存在差异,大肠杆菌生长延迟期的外膜蛋白W和磷酸丙酮酸羧化酶表达量高于对数期和平稳期,而周质蛋白、外膜蛋白Ⅱ和磷酸转乙酰酶表达量低于对数期和平稳期。本研究结果初步揭示了菌体蛋白表达变化与细菌生长的关系,为进一步用于大肠杆菌奶牛乳房炎的防控提供参考。

关键词: 二维凝胶电泳; 生长阶段; 蛋白质组学; 大肠杆菌

Abstract: To investigate the differentially expressed proteins of Escherichia coli from mastitic cow during growth phase,two-dimensional electrophoresis coupled with mass spectrometry method were used to separate and identify the changes of proteins in the lag phase,exponential phase and stationary phase of Escherichia coli.The results showed that some protein compositions of Escherichia coli were changed in lag phase,exponential phase and stationary phase.Relative abundance of outer membrane protein W and phosphoenolpyruvate carboxykinase in Escherichia coli were increased,while periplasmic protein,outer membrane protein Ⅱ and phosphotransacetylase were decreased in the lag phase comparative with exponential phase and stationary phase.Results of this study help provide the relationships between proteins expression and the growth of this pathogen,and were used to control and protect the host against the pathogen.

Key words: two-dimensional electrophoresis; growth phase; proteomic; Escherichia coli