کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8329545 | 1540212 | 2017 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Trehalose induced structural modulation of Bovine Serum Albumin at ambient temperature
ترجمه فارسی عنوان
ترهلوز القاء مدولاسیون ساختاری آلبومین سرم گاو را در دمای محیط ایجاد می کند
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کلمات کلیدی
پروتئین تثبیت کننده اسمولیت، اثر تراهولوز، آلبومین سرم گاو، عامل ضد تجمع، ساختار-عملکرد تابع،
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
Trehalose is a well-known protein stabilizing osmolyte. The present study has been designed to understand the interaction of trehalose with BSA at ambient temperature. Steady state fluorescence and life-time analysis along with CD, DLS and ITC have been employed to show that trehalose causes surface-associated structural perturbation of BSA to promote its compaction. Trehalose at 0.1Â M concentration resulted in increased solvent exposure of one of the two tryptophans of BSA with a 5Â nm redshift in emission and enhanced susceptibility to acrylamide quenching with an increase in KSV from 2.61Â Mâ1to 5.16Â Mâ1. 0.5Â M trehalose resulted in reduced accessibility of tryptophan and destabilization of ANS binding (Forster radius increased from 24Â Ã
to 27.36Â Ã
for tryptophan-ANS FRET) indicating shielding of BSA in trehalose matrix. Simultaneously, there was compaction of BSA as shown by increased alpha-helicity from 45.85% to 48.81%, decreased thioflavin-T binding and reduction in hydrodynamic radius from 9.69Â nm to 6.59Â nm. Trehalose induced solution viscosity resulted in significant decrease in binding affinity of BSA towards curcumin and resveratrol. The results are in unison with the preferential exclusion and vitrification models to explain protein stabilization by trehalose and also points at the structure-function trade-off of proteins in presence of trehalose.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 105, Part 1, December 2017, Pages 645-655
Journal: International Journal of Biological Macromolecules - Volume 105, Part 1, December 2017, Pages 645-655
نویسندگان
Ahana Das, Pijush Basak, Rudradip Pattanayak, Turban Kar, Rajib Majumder, Debadrita Pal, Anindita Bhattacharya, Maitree Bhattacharyya, Samudra Prosad Banik,