کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8327790 | 1540203 | 2018 | 48 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanistic insights into the urea-induced denaturation of kinase domain of human integrin linked kinase
ترجمه فارسی عنوان
بینش مکانیکی به دژنراسیون ناشی از اوره دامنه کیناز از کیناز مرتبط با انترین انسان
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
Integrin-linked kinase (ILK), a ubiquitously expressed intracellular Ser/Thr protein kinase, plays a major role in the oncogenesis and tumour progression. The conformational stability and unfolding of kinase domain of ILK (ILK193-446) was examined in the presence of increasing concentrations of urea. The stability parameters of the urea-induced denaturation were measured by monitoring changes in [θ]222 (mean residue ellipticity at 222 nm), difference absorption coefficient at 292 nm (Îε292) and intrinsic fluorescence emission intensity at pH 7.5 and 25 ± 0.1 °C. The urea-induced denaturation was found to be reversible. The protein unfolding transition occurred in the urea concentration range 3.0-7.0 M. A coincidence of normalized denaturation curves of optical properties ([θ]222, Îε292 and λmax, the wavelength of maximum emission intensity) suggested that urea-induced denaturation of kinase domain of ILK is a two-state process. We further performed molecular dynamics simulation for 100 ns to see the effect of urea on structural stability of kinase domain of ILK at atomic level. Structural changes with increasing concentrations of urea were analysed, and we observed a significant increase in the root mean square deviation, root mean square fluctuations, solvent accessible surface area and radius of gyration. A correlation was observed between in vitro and in silico studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 111, May 2018, Pages 208-218
Journal: International Journal of Biological Macromolecules - Volume 111, May 2018, Pages 208-218
نویسندگان
Sunayana Begum Syed, Faez Iqbal Khan, Sabab Hasan Khan, Saurabha Srivastava, Gulam Mustafa Hasan, Kevin A. Lobb, Asimul Islam, Faizan Ahmad, Md. Imtaiyaz Hassan,