Identification and quantification of the phosphorylated ovalbumin by high resolution mass spectrometry under dry-heating treatment
文献类型: 外文期刊
第一作者: Wang, Hui
作者: Wang, Hui;Tu, Zong-cai;Tu, Zong-cai;Liu, Guang-xian;Zhang, Lu;Chen, Yuan;Liu, Guang-xian
作者机构:
关键词: Ovalbumin;Phosphorylation;Mass spectrometry;Dry-heating treatment;Pepsin
期刊名称:FOOD CHEMISTRY ( 影响因子:7.514; 五年影响因子:7.516 )
ISSN:
年卷期:
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收录情况: SCI
摘要: The specific phosphorylation sites and degree of phosphorylation (DP) at each site are directly related to protein's structure and functional properties. Thus, characterizing the introduced phosphate groups is of great importance. This study was to monitor the phosphorylation sites, DP and the number of phosphorylation sites in P-Oval achieved by dry heating in the presence of pyrophosphate for 1, 2 and 5 days by using Fourier transform ion cyclotron mass spectrometry (FTICR MS). Two phosphorylation sites were found in natural ovalbumin, but the number of phosphorylation sites increased to 8, 8 and 10 after dry-heating phosphorylation for 1, 2 and 5 days, respectively. In addition, dual-phosphorylated peptides were detected for samples without extensive heating. The phosphorylation sites were found to be mainly on Ser residues, which could be the preferred phosphorylation site for dry heating in the presence of pyrophosphate. (C) 2016 Elsevier Ltd. All rights reserved.
分类号: TS2`TS201.2
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