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

doi:10.7506/spkx1002-6630-20180914-152

Abstract

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

CLC Number:

TS201.3

LANG Chenxiao, LUO Xin, ZHU Lixian, ZHANG Yimin, HAN Guangxing, DONG Pengcheng. Two-Component Regulatory System and Its Mechanism of Action in Regulating Bacterial Acid Tolerance Response: A Review[J]. FOOD SCIENCE, 2019, 40(15): 359-366.

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

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