کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1987534 | 1540289 | 2010 | 6 صفحه PDF | دانلود رایگان |
This work focused on the conformational changes of α-chymotrypsin from bovine pancreas for various concentrations as well as the effects of chemical denaturation and organic solvents using both of viscosity and dynamic light scattering techniques. A wide range of concentrations varying between 0.1 and 30 mg/ml is tested to determine the critical concentration c** that separates the extremely dilute regime to the dilute regime and the overlapping concentration c* that separates the dilute regime to the semi-dilute regime. The knowledge of α-chymotrypsin folding process is followed for a range of chemical denaturant concentrations varying from 1 to 6 M. We showed that the α-chymotrypsin folds through a cooperative two-state transition without detectable kinetic intermediates and the formation of 50% unfolded happens for 5.5 M of urea or guanidinium chloride (GdmCl) concentrations. The action modes of the acetonitrile on the conformational changes of α-chymotrypsin are also achieved for concentrations varying between 10 and 50%.
Journal: International Journal of Biological Macromolecules - Volume 47, Issue 4, 1 November 2010, Pages 425–430