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KMID : 0545120230330070857
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Journal of Microbiology and Biotechnology
2023 Volume.33 No. 7 p.857 ~ p.863
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ClC Chloride Channels in Gram-Negative Bacteria and Its Role in the Acid Resistance Systems
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Kim Min-Jeong
Choi Nak-Jun
Choi Eun-Na
Lee Eun-Jin
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Abstract
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Pathogenic bacteria that colonize the human intestinal tract have evolved strategies to overcome acidic conditions when they pass through the gastrointestinal tract. Amino acid-mediated acid resistance systems are effective survival strategies in a stomach that is full of amino acid substrate. The amino acid antiporter, amino acid decarboxylase, and ClC chloride antiporter are all engaged in these systems, and each one plays a role in protecting against or adapting to the acidic environment. The ClC chloride antiporter, a member of the ClC channel family, eliminates negatively charged intracellular chloride ions to avoid inner membrane hyperpolarization as an electrical shunt of the acid resistance system. In this review, we will discuss the structure and function of the prokaryotic ClC chloride antiporter of amino acid-mediated acid resistance system.
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KEYWORD
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clcA, acid resistance, ClC channel, chloride antiporter
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