食品科学 ›› 2019, Vol. 40 ›› Issue (15): 359-366.doi: 10.7506/spkx1002-6630-20180914-152

• 专题论述 • 上一篇    

双组分调控系统及其对细菌诱导性耐酸响应调控机理的研究进展

郎晨晓,罗 欣,朱立贤,张一敏,韩广星,董鹏程   

  1. 1.山东农业大学食品科学与工程学院,山东 泰安 271018;2.国家肉牛牦牛产业技术体系临沂站,山东 临沂 276000
  • 出版日期:2019-08-15 发布日期:2019-08-26
  • 基金资助:
    山东省自然科学基金青年项目(ZR2017BC064);现代农业产业技术体系建设专项(CARS-37);山东省牛产业创新团队加工与质量控制岗位项目(SDAIT-09-09)

Two-Component Regulatory System and Its Mechanism of Action in Regulating Bacterial Acid Tolerance Response: A Review

LANG Chenxiao, LUO Xin, ZHU Lixian, ZHANG Yimin, HAN Guangxing, DONG Pengcheng   

  1. 1. College of Food Science and Engineering, Shandong Agricultural University, Tai’an 271018, China;2. National Beef Cattle Industrial Technology System, Linyi Station, Linyi 276000, China
  • Online:2019-08-15 Published:2019-08-26

摘要: 双组分调控系统(two-component regulatory system,TCS)是维持细菌在压力环境中存活的重要结构。食品加工过程极易产生高渗、弱酸等压力环境,双组分系统能够帮助细菌感受外部环境的胁迫,及时动员体内对抗机制,这一过程容易产生耐酸、耐渗透压、耐高温甚至是高毒性的菌株,威胁食品安全。本文主要对TCS的结构组成、识别信号及调控作用等进行概述,并与细菌诱导耐酸响应(acid tolerance response,ATR)中的酸休克蛋白、细胞膜系统和氨基酸代谢等产生机制进行联系,综述了细菌在酸性条件下通过TCS响应信号分子激发ATR的具体过程。

关键词: 双组分调控系统, 诱导耐酸响应, 信号分子, 调控机制, 食品加工

Abstract: The two-component regulatory system (TCS) is a vital structure for maintaining the survival of bacteria in complex environments. Food processing can induce high osmotic pressure, weak acid and other stressful environments. The two-component system can help bacteria to perceive the external environment and mobilize the internal resistance mechanism in time. However, this process can produce strains that are resistant to acids, osmotic pressure, and high temperature, and even highly virulent strains threatening food safety. This paper summarizes the structural composition, recognition signal and regulatory role of TCS. Based on the acid shock proteins, cell membrane system and amino acid metabolism associated with acid tolerance response (ATR), the activation process of ATR by TCS in response to signal molecules under acidic conditions is also discussed.

Key words: two-component regulation system, acid tolerance response, signal molecule, regulation mechanism, food processing

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