Engineering two-component systems for advanced biosensing: From architecture to applications in biotechnology.

Area of Science:

• Microbiology
• Synthetic Biology
• Biotechnology

Background:

• Two-component systems (TCSs) are essential bacterial signaling pathways involving phosphotransfer between histidine kinases and response regulators.
• TCSs enable bacteria to respond to environmental cues, and have been repurposed as biosensors for detecting heavy metals, biomarkers, and producing bioproducts.

Purpose of the Study:

• To review the architectures and regulatory mechanisms of TCSs.
• To summarize recent advancements in engineering TCSs for improved biosensor performance.
• To highlight the potential of engineered TCSs in various biotechnological fields.

Main Methods:

• Discussion of TCS architectures and regulatory mechanisms.
• Summary of experimental and computational methods for TCS engineering.
• Analysis of strategies to fine-tune biosensor parameters like response curve and specificity.

Main Results:

• TCSs can be engineered to enhance biosensor functionality.
• Engineering methods allow for fine-tuning of TCS response curves and specificity.
• Engineered TCSs show promise for applications in medicine, environmental monitoring, and biorefineries.

Conclusions:

• Engineering TCSs is crucial for overcoming limitations in current biosensor designs.
• Optimized TCS biosensors have broad applications across biotechnology.
• Further development in TCS engineering will drive innovation in medical, environmental, and industrial biotechnology.