使用OpenProt和质谱仪探索替代蛋白质组
Nicolas Provencher1, Sébastien Leblanc1, Jean-François Jacques1
1Department of Biochemistry and Functional Genomics, Université de Sherbrooke, Sherbrooke, QC, Canada.
Methods in molecular biology (Clifton, N.J.)
|July 12, 2024
概括
OpenProt从转录组中未注释的开放阅读框架 (ORF) 中识别出新型蛋白质和异型. 这种蛋白质基因组工具有助于使用质谱仪检测新的蛋白质和异型.
科学领域:
- 蛋白质基因组学是什么
- 文字转录学 (Transcriptomics) 是一个学科.
- 生物信息学是一种生物信息学.
背景情况:
- 蛋白质基因组学揭示了从未注释的开放阅读框架 (ORF) 转换到信使RNA (mRNA) 和非编码RNA (ncRNA) 中的翻译.
- 像UniProt,RefSeq和Ensembl这样的现有数据库主要注释正规蛋白质,留下了许多未被发现的翻译ORF.
- 发现非正规蛋白质,包括新型异型和替代蛋白质,对于全面了解蛋白质组至关重要.
研究的目的:
- 介绍OpenProt,一个全面的数据库,用于注释物种的转录组内的所有ORF (≥30个编码).
- 描述在基因和转录中识别多个ORF的方法.
- 通过基于质谱的蛋白质组学来解释OpenProt用于检测新型异构和替代蛋白质的利用.
主要方法:
- 所有ORF的全转录组注释,最小长度为30个编码子.
- 标注蛋白质分为参考 (正规) 和非正规类型 (新异型,替代蛋白质) 的分类.
- 使用OpenProt数据库查询和质谱数据进行蛋白质识别和验证.
主要成果:
- OpenProt成功地注释了大量的ORF,显著扩大了已知的蛋白质组.
- 该数据库区分了具有已知蛋白质同质性的新型单元形式和缺乏同质性的新型替代蛋白质.
- 描述的方法可以在蛋白质学研究中检测和表征这些非正规蛋白质.
结论:
- OpenProt提供了一个有价值的资源,用于探索来自ORFs的未注释蛋白质组.
- 该平台有助于发现新型蛋白质异构体和全新的蛋白质,推动蛋白质基因组研究.
- 将OpenProt与基于质谱的蛋白质组学集成,可以提高以前未被发现的蛋白质编码元素的识别.
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