Engineering the Active Site Lid Dynamics to Improve the Catalytic Efficiency of Yeast Cytosine Deaminase
Abstract
:1. Introduction
2. Results
2.1. Construct yCD with a Helix Tail
2.2. Product Release Rate of yCD Variants
2.3. Activation Enthalpy and Entropy of yCD Variants
2.4. Structure and Active Site Interactions of yCD-RQ and yCD-RQ-1/8SAH
2.5. Conformational Dynamics from H/D Exchanges
3. Discussion
4. Materials and Methods
4.1. Construction of Mutagenesis Library
4.2. Screening Procedure
4.3. Expression and Purification of yCD Fusion Proteins
4.4. Kinetic Measurements and Data Fitting
4.5. 19F NMR Spectroscopy and the Product Release Rate
4.6. H/D Exchange Rate of yCD and Its Variants
4.7. Crystallization, Data Collection, and Structure Refinement
5. Patents
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Deng, H.; Qin, M.; Liu, Z.; Yang, Y.; Wang, Y.; Yao, L. Engineering the Active Site Lid Dynamics to Improve the Catalytic Efficiency of Yeast Cytosine Deaminase. Int. J. Mol. Sci. 2023, 24, 6592. https://doi.org/10.3390/ijms24076592
Deng H, Qin M, Liu Z, Yang Y, Wang Y, Yao L. Engineering the Active Site Lid Dynamics to Improve the Catalytic Efficiency of Yeast Cytosine Deaminase. International Journal of Molecular Sciences. 2023; 24(7):6592. https://doi.org/10.3390/ijms24076592
Chicago/Turabian StyleDeng, Hanzhong, Mingming Qin, Zhijun Liu, Ying Yang, Yefei Wang, and Lishan Yao. 2023. "Engineering the Active Site Lid Dynamics to Improve the Catalytic Efficiency of Yeast Cytosine Deaminase" International Journal of Molecular Sciences 24, no. 7: 6592. https://doi.org/10.3390/ijms24076592