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Updated: May 9, 2026

DNA-affinity-purified Chip (DAP-chip) Method to Determine Gene Targets for Bacterial Two component Regulatory Systems
Published on: July 21, 2014
Overview of functionally characterized two-component regulatory systems in Vibrio parahaemolyticus
Fengjun Sun1, Pu Yao1, Yiquan Zhang2
1Department of Pharmacy, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, 400038, China.
None:
Two-component regulatory systems (TCSs) are ubiquitous signal transduction pathways in bacteria, enabling adaptive responses to environmental changes via phosphoryl signaling. In Vibrio parahaemolyticus, a globally significant enteropathogen, TCSs orchestrate survival strategies and pathogenicity. This review synthesizes current knowledge on the composition, signaling mechanisms, and functional roles of key TCSs in V. parahaemolyticus. Systems such as VbrK/VbrR, which senses β-lactams and nitrite to modulate β-lactamase production and suppresses type III secretion system 1 (T3SS1), and ArcB/ArcA, which integrates oxygen-dependent signals into quorum sensing and virulence regulation, highlight the adaptability of this pathogen. Other systems, including BarA/UvrY, PhoB/PhoR, and TtrS/TtrR, further illustrate the regulatory complexity governing metabolism, motility, and host colonization. Despite advances, significant gaps remain in understanding ligand specificity, cross-system interactions, and mechanistic details of transcriptional regulation, particularly for newly identified regulatory targets and auxiliary TCS interactions.
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