Proteomic characterization and comparison of mammalian milk fat globule proteomes by iTRAQ analysis
文献类型: 外文期刊
第一作者: Yang, Yongxin
作者: Yang, Yongxin;Zheng, Nan;Zhao, Xiaowei;Zhang, Yangdong;Han, Rongwei;Ma, Lu;Zhao, Shengguo;Li, Songli;Guo, Tongjun;Wang, Jiaqi;Yang, Yongxin;Zhao, Xiaowei;Zheng, Nan;Zhang, Yangdong;Zhao, Shengguo;Li, Songli;Wang, Jiaqi;Han, Rongwei
作者机构:
关键词: Milk fat globule membrane proteome;Quantitative proteomics;Mammal species;Clustering
期刊名称:JOURNAL OF PROTEOMICS ( 影响因子:4.044; 五年影响因子:4.02 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Milk fat globule membrane (MFGM) proteins are known to be involved in many biological functions; however, their components and inter-species complexity have not yet been completely elucidated. We investigated the protein composition of the MFGM-enriched fraction from Holstein, Jersey, yak, buffalo, goat, camel, horse, and human. Extracted proteins from the MFGM-enriched fractions were identified and quantified by an iTRAQ proteomic approach. We identified 520 protein species categorized as biological processes, cellular components and molecular function according to their annotation. Cellular process, localization, transport, signal transduction, and response to stimulus were the most common biological processes; binding and catalytic activities were the most prevalent molecular functions. Pathway analysis revealed several pathways, including glycolysis/ gluconeogenesis, peroxisome proliferator-activated receptor signaling, and fatty acid biosynthesis. Quantified MFGM-enriched proteins were subjected to discriminative proteomic profiling by principal component analysis and a hierarchical clustering method, and then organized into four major clusters: (1) Holstein, Jersey, and yak milk; (2) buffalo and goat milk; (3) Holstein, Jersey, buffalo, yak, and goat milk; and (4) camel, horse, and human milk. These novel quantitative data provide insight into the protein composition of the MFGM and their potential physiological functions, and highlight the significant differences in the MFGM fractions among mammalian species.
分类号: Q51
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