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Spectroscopy and molecular docking study on the interaction behavior between nobiletin and pepsin
Hua-jin Zeng1, Tingting Qi, Ran Yang
1School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, People's Republic of China.
Journal of Fluorescence
|May 3, 2014
Summary
Nobiletin (NOB) binds to pepsin, altering its structure and inhibiting its activity. This interaction occurs via hydrophobic and electrostatic forces at a single binding site within the pepsin cavity.
Area of Science:
- Biochemistry
- Enzymology
- Molecular Biology
Background:
- Pepsin is a crucial digestive enzyme.
- Nobiletin (NOB) is a flavonoid with potential biological activities.
- Understanding nobiletin-protein interactions is important for its therapeutic applications.
Purpose of the Study:
- To investigate the binding mechanism of nobiletin (NOB) with pepsin.
- To elucidate the structural and functional consequences of NOB binding to pepsin.
Main Methods:
- Spectroscopic techniques (fluorescence spectroscopy)
- Molecular docking simulations
Main Results:
- Nobiletin (NOB) forms a complex with pepsin through spontaneous binding.
- Binding involves hydrophobic and electrostatic interactions at a single site within the pepsin cavity.
- NOB binding induces conformational and micro-environmental changes in pepsin, leading to inhibition of its enzymatic activity.
Conclusions:
- Nobiletin (NOB) interacts with pepsin at a molecular level.
- The binding of NOB alters pepsin's structure and function, resulting in enzyme inhibition.
- This study provides insights into the molecular basis of nobiletin's effect on pepsin.
