Thermodynamics of bpti folding
โ Scribed by George I. Makhatadze; Key-Sun Kim; Clare Woodward; Peter L. Privalov
- Book ID
- 105356178
- Publisher
- Cold Spring Harbor Laboratory Press
- Year
- 1993
- Tongue
- English
- Weight
- 790 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0961-8368
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โฆ Synopsis
Abstract
A calorimetric study of the basic pancreatic trypsin inhibitor (BPTI) has been performed using the new generation of the adiabatic scanning microcalorimeters, operating in an extended temperature range of 5โ130 ยฐC. Precise measurements of the heat capacities of the native and unfolded states of BPTI show that the heat capacity change upon unfolding strongly depends on temperature; its value is maximal at about 50 ยฐC and diminishes as the temperature is increased. The temperature dependencies of the enthalpy and entropy changes upon BPTI unfolding were found to be similar to those normally observed for other small globular proteins. The stability of BPTI has been correlated with its structure.
๐ SIMILAR VOLUMES
The most surprising feature of proteins, which distinguishes them from all other types of large polymeric molecules and provides them with a broad range of special properties, is their unique structural order. The position of each atom in these macromolecules is unique relative to its neighboring at