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| Type |
Symposium |
| Area |
Recent Trends in Bio-Inorganic Chemistry |
| Room No. |
Room 211+212+213 |
| Time |
FRI 09:25-: |
| Code |
INOR1-2 |
| Subject |
Metal coordination region of concanavalin A for interaction with human norovirus
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| Authors |
Seung Jae Lee
Department of Chemistry, Chonbuk National University, Korea |
| Abstract |
Rapid methods for the detection and clinical treatment of human norovirus (HuNoV) are needed to control foodborne disease outbreaks, but reliable techniques that are fast and sensitive enough to detect small amounts of HuNoV in food and aquatic environments are not yet available. We explore the interaction between HuNoV and concanavalin A (Con A), which could facilitate the development of a sensitive detection tool for HuNov. Biophysical studies including hydrogen/deuterium exchange (HDX) mass spectrometry and surface plasmon resonance (SPR) revealed that when the metal coordinated region of Con A, which spans Asp16 to His24, is converted to nine alanine residues (mCon AMCR), the affinity for HuNoV (GII.4) diminishes, demonstrating that this Ca2+ and Mn2+ coordinated region is responsible for the observed virus-protein interaction. The mutated carbohydrate binding region of Con A (mCon ACBR) does not affect binding affinity, indicating that MCR is a major region of interaction. The results further contribute for the development of a HuNoV concentration tool, Con A-immobilized polyacrylate beads (Con A-PAB), for rapid detection of genotypes of genogroup I and II (GI and GII). This method offers many advantages over currently available methods, including a short concentration time. Norovirus can be detected in just 15 minutes with 90% recovery through Con A-PAB application. In addition, this method can be used over a wide range of pH values (pH 3.0 ̶ 10.0). Overall, this rapid and sensitive detection of human norovirus will aid in the prevention of virus transmission pathways and the method developed here may have broad applicability for other foodborne viral infections. |
| E-mail |
slee026@jbnu.ac.kr |
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120th General Meeting of the KCS