Thermostability of protein studied by molecular dynamics simulation
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Updated: Aug 29, 2026

Determination of Protein-ligand Interactions Using Differential Scanning Fluorimetry
Published on: September 13, 2014
Jian-Hua Zhang1, Li-Li Zhang, Lin-Xiang Zhou
1Surface Physics Key Laboratory Department of Physics, Fudan University, China.
Abstract:
The thermostability of protein thermostable cathechol 2,3-dixoygenase (TC23O) has been studied by the parallel molecular dynamics simulations. By analysis of the exponent beta, which is related to the scattering spectrum and constant-pressure heat capacity Cp, we reveal the respective contribution of a specific residue 228 proline; a specific salt bridge, Lys188N-Glu291OE1; four ions; and a different water environment to the thermostability of TC23O. The dynamic transition temperature of the mutants, Pro228Ser and Glu291Gly of the TC23O, was decreased about 10 degrees C and 19 degrees C respectively. The displacement of the four ions had no significant effect on the thermostability of TC23O. Water affects the thermostability by influencing the changes of accessible conformation to a certain extent. All these results agree with the known experimental results.
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