Comprehensive identification of novel proteins and N-glycosylation sites in royal jelly
文献类型: 外文期刊
第一作者: Zhang, Lan
作者: Zhang, Lan;Han, Bin;Li, Rongli;Lu, Xiaoshan;Fang, Yu;Feng, Mao;Li, Jianke;Zhang, Lan;Lu, Xiaoshan;Nie, Aiying;Guo, Lihai
作者机构:
关键词: Royal jelly;N-glycosylation;Hydrazide chemistry;Lectin affinity;Tandem mass spectrometry
期刊名称:BMC GENOMICS ( 影响因子:3.969; 五年影响因子:4.478 )
ISSN: 1471-2164
年卷期: 2014 年 15 卷
页码:
收录情况: SCI
摘要: Background: Royal jelly (RJ) is a proteinaceous secretion produced from the hypopharyngeal and mandibular glands of nurse bees. It plays vital roles in honeybee biology and in the improvement of human health. However, some proteins remain unknown in RJ, and mapping N-glycosylation modification sites on RJ proteins demands further investigation. We used two different liquid chromatography-tandem mass spectrometry techniques, complementary N-glycopeptide enrichment strategies, and bioinformatic approaches to gain a better understanding of novel and glycosylated proteins in RJ. Results: A total of 25 N-glycosylated proteins, carrying 53 N-glycosylation sites, were identified in RJ proteins, of which 42 N-linked glycosylation sites were mapped as novel on RJ proteins. Most of the glycosylated proteins were related to metabolic activities and health improvement. The 13 newly identified proteins were also mainly associated with metabolic processes and health improvement activities. Conclusion: Our in-depth, large-scale mapping of novel glycosylation sites represents a crucial step toward systematically revealing the functionality of N-glycosylated RJ proteins, and is potentially useful for producing a protein with desirable pharmacokinetic and biological activity using a genetic engineering approach. The newly-identified proteins significantly extend the proteome coverage of RJ. These findings contribute vital and new knowledge to our understanding of the innate biochemical nature of RJ at both the proteome and glycoproteome levels.
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