کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1987249 | 1540296 | 2010 | 5 صفحه PDF | دانلود رایگان |
Little work has been done to understand the folding of proteins at alkaline conditions. BSA acquires a partially reversible unfolded state at pH 13.0, devoid of any native structure. Introduction of methanol, ethanol and 2-propanol with the alkaline unfolded protein resulted in β-sheet-like structure formation, and 2,2,2-trifluroethanol found to enhance α-helical conformations with simultaneous increase in aggregation. The extent of secondary and tertiary structure formation is in the order of methanol < ethanol < 2-propanol < 2,2,2-trifluroethanol. Exposure of hydrophobic core of protein molecules in apolar environment of 2,2,2-trifluroethanol seems to promote intermolecular cluster formation. This is one of the very few reports that α-helical structures can also aggregate.
Journal: International Journal of Biological Macromolecules - Volume 46, Issue 2, 1 March 2010, Pages 250–254