Liquid Chromatography High-Resolution Mass Spectrometry Identifies the Glycation Sites of Bovine Serum Albumin Induced by D-Ribose with Ultrasonic Treatment
文献类型: 外文期刊
作者: Zhang, Nanhai 1 ; Tu, Zongcai 1 ; Wang, Hui 1 ; Liu, Guangxian 2 ; Wang, Zhenxing 2 ; Huang, Tao 1 ; Qin, Xu 1 ; Xie, Xin 1 ;
作者机构: 1.Nanchang Univ, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China
2.Jiangxi Normal Univ, Coll Life Sci, Nanchang 330022, Jiangxi, Peoples R China
3.Jiangxi Acad Agr Sci, Nanchang 330200, Jiangxi, Peoples R China
关键词: BSA;ultrasonication;glycation;LCHR-MS;DSP
期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:5.279; 五年影响因子:5.269 )
ISSN: 0021-8561
年卷期: 2018 年 66 卷 3 期
页码:
收录情况: SCI
摘要: Ultrasonication is an emerging technology applied in food processing and biological experimental pretreatments. Cavitation phenomena induced during ultrasonic treatment can generate localized high temperature and pressure, which can result in glycation reaction between protein and reducing sugars. In this study, the mixture of bovine serum albumin (BSA) and d-ribose was treated under 600 W for different times. Interestingly, a large amount of carbonized black materials appeared after ultrasonication, while the UV absorbance and intrinsic fluorescence spectra reflecting conformational changes were not obvious. Only 12 sites (11 lysines and 1 arginine) of the BSA with ribose under ultrasonic treatment for 35 min were identified through liquid chromatography high-resolution mass spectrometry (LCHR-MS). K547, K548, R359/R360, and K587 were the most reactive glycated sites, with the average degree of substitution per peptide molecule (DSP) value ranging from 15 to 35%. The glycated modification was distributed not only in domain III, but also in domains I and II. The glycated modification could occur during ultrasonic treatment, thereby influencing the properties of biomacromolecule after extraction.
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