کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10393273 | 887764 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural changes in β-lactoglobulin by conjugation with three different kinds of carboxymethyl cyclodextrins
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
DSCEDCβ-Lg[η]1-ethyl-3-[3-(dimethylamino)propyl]carbodiimideβ-Lactoglobulin - β-لاکتوگلوبولینcircular dichroism - رنگ تابی دورانیCompactness - فشردگیShielding - محافظHydrophobic force - نیروی هیدروفوبIntrinsic viscosity - ویسکوزیته ذاتیStabilization - پایدارسازیProtein conjugation - پیوند پروتئینDifferential scanning calorimetry - کالریمتری روبشی افتراقی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
β-Lactoglobulin-carboxymethyl cyclodextrin (β-LG-CMCyD) conjugates were prepared by using water soluble carbodiimide. Three kinds of CMCyDs differing in molecular mass were used to investigate the effects of different CMCyD contents, net charge and hydrophobicity on the structural changes in β-lactoglobulin. The effect of CMCyDs on the structure of β-lactoglobulin was utilized to investigate the contribution of hydrophobic interactions to the stability of the protein. Spectroscopic studies suggested that the conformation around had not changed in either conjugate but the α-helix content of β-LG-CMCyD conjugates had markedly increased as compared with that of β-lactoglobulin. The differential scanning calorimetry technique confirmed that the addition of one glucose unit in β-LG-CMCyD conjugates, enthalpy change of calorimetry decreased and the denaturation temperature of each conjugate was higher than that of native β-lactoglobulin. The heat contents agreed well with the conformational transition measured by molar ellipticity at 222 nm ([θ]222) and Stoke's radius (RS) values. Therefore, hydrophobic forces play an important role in stabilizing and shielding of the β-LG-CMCyD conjugates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 432, Issue 1, 1 July 2005, Pages 106-111
Journal: Thermochimica Acta - Volume 432, Issue 1, 1 July 2005, Pages 106-111
نویسندگان
J. Chamani, A.A. Moosavi-Movahedi, G.H. Hakimelahi,