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- Kim, Chae Un
- High Pressure X-ray Science Lab.
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Tracking solvent dynamics during carbonic anhydrase catalysis
- Author(s)
- Kim, Chae Un
- Issued Date
- 2020-08-05
- Citation
- 70th American Crystallographic Association annual meeting
- Abstract
- Human carbonic anhydrase II (CA II) is a zinc metalloenzyme that catalyzes the reversible hydration/dehydration of CO2/HCO3-. Although CA II has been extensively studied to investigate the proton-transfer process that occurs in the active site, its underlying mechanism is still not fully understood. In this presentation, we present the crystallographic structures of CA II cryocooled under various CO2 pressures. The structures reveal new intermediate solvent states of CA II that provide crystallographic snapshots during the restoration of the proton-transfer water network in the active site. In addition, the structures provide hints for the role of metal ions in CA II catalysis.
- Publisher
- American Crystallographic Association
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