Recombinant Taq DNA polymerase

Area of Science:

• Biotechnology
• Molecular Biology
• Enzyme Engineering

Background:

• The COVID-19 pandemic underscored the need for rapid diagnostic assays for health security.
• Taq DNA polymerase is a critical enzyme for molecular detection, particularly in PCR-based diagnostics.
• Its inherent thermostability, structural features, and engineered variants are key to efficient amplification.

Purpose of the Study:

• To provide an overview of recombinant Taq DNA polymerase.
• To discuss its characteristics, structural features, and engineering advances.
• To highlight production strategies and purification for industrial demands.

Main Methods:

• Review of structural properties contributing to Taq DNA polymerase thermostability.
• Analysis of protein engineering strategies to enhance enzyme fidelity, processivity, and stability.
• Overview of recombinant production, optimization, and purification techniques.

Main Results:

• Taq DNA polymerase's thermostability (activity >90 °C) is attributed to specific structural adaptations.
• Engineered variants demonstrate improved performance characteristics.
• Hot-start modifications enhance specificity and reduce non-specific amplification in diagnostic assays.

Conclusions:

• Recombinant Taq DNA polymerase production is crucial for meeting industrial demands in diagnostics and research.
• Optimized production and engineering of Taq DNA polymerase are essential for advancing molecular detection technologies.
• Taq DNA polymerase remains a relevant model enzyme for protein engineering and biotechnological applications.