Journal
BIOPHYSICAL CHEMISTRY
Volume 211, Issue -, Pages 59-69Publisher
ELSEVIER
DOI: 10.1016/j.bpc.2016.02.005
Keywords
Solvation dynamics; Fluorescence anisotropy; Human serum albumin; Stabilization; Sucrose; Chemical denaturation; Thermal denaturation
Funding
- University Grants Commission (UGC, Government of India)
- Council of Scientific and Industrial Research (CSIR, Government of India)
- Science and Engineering Research Board, Department of Science and Technology, Government of India [SR/S1/PC-08/2011]
- IIT Kanpur
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The present study is devoted to understand the effect of sucrose on the hydration dynamics and rotational relaxation dynamics within the domain-I of HSA during chemically as well as thermally induced unfolding. It has been observed that the average solvation time become slower in the presence of sucrose for the lower concentrations of GnHCI, however at higher concentrations of GnHCI the effect of sucrose is almost negligible. From the time resolved fluorescence anisotropy it has been observed that in the lower concentration region of GnHCI the sucrose induced stabilization is small as compared to the higher concentrations of GnHCI. We have concluded that the hydration dynamics plays an important role in the sucrose induced stabilization process at the low concentration region; whereas environmental restriction is responsible at the higher concentration of GnHCI. However, we have observed a negligible stabilizing effect of sucrose towards the temperature induced unfolding. (C) 2016 Elsevier B.V. All rights reserved.
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