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- W4310030238 endingPage "14785" @default.
- W4310030238 startingPage "14785" @default.
- W4310030238 abstract "Characterization of the hydrated state of a protein is crucial for understanding its structural stability and function. In the present study, we have investigated the 3D hydration structure of the protein BPTI (bovine pancreatic trypsin inhibitor) by molecular dynamics (MD) and the integral equation method in the three-dimensional reference interaction site model (3D-RISM) approach. Both methods have found a well-defined hydration layer around the protein and revealed the localization of BPTI buried water molecules corresponding to the X-ray crystallography data. Moreover, under 3D-RISM calculations, the obtained positions of waters bound firmly to the BPTI sites are in reasonable agreement with the experimental results mentioned above for the BPTI crystal form. The analysis of the 3D hydration structure (thickness of hydration shell and hydration numbers) was performed for the entire protein and its polar and non-polar parts using various cut-off distances taken from the literature as well as by a straightforward procedure proposed here for determining the thickness of the hydration layer. Using the thickness of the hydration shell from this procedure allows for calculating the total hydration number of biomolecules properly under both methods. Following this approach, we have obtained the thickness of the BPTI hydration layer of 3.6 Å with 369 water molecules in the case of MD simulation and 3.9 Å with 333 water molecules in the case of the 3D-RISM approach. The above procedure was also applied for a more detailed description of the BPTI hydration structure near the polar charged and uncharged radicals as well as non-polar radicals. The results presented for the BPTI as an example bring new knowledge to the understanding of protein hydration." @default.
- W4310030238 created "2022-11-30" @default.
- W4310030238 creator A5004504644 @default.
- W4310030238 creator A5037112972 @default.
- W4310030238 creator A5040287484 @default.
- W4310030238 creator A5064151637 @default.
- W4310030238 date "2022-11-26" @default.
- W4310030238 modified "2023-10-01" @default.
- W4310030238 title "Protein 3D Hydration: A Case of Bovine Pancreatic Trypsin Inhibitor" @default.
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