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Method for the Quantitative Detection of Isoforms of Translation Initiation Factors 4E in Potato Leaf Tissues Using Multiple Reaction Monitoring
Journal of Analytical Chemistry ( IF 1.0 ) Pub Date : 2024-12-27 , DOI: 10.1134/s106193482470120x
V. D. Karlov ,  V. Yu. Korchinskaya ,  O. I. Klychnikov

Abstract

Potato, like other Solanaceae plants, have a small family of eukaryotic translation initiation factors 4E (eIF4E), including four proteins eIF4E-1, eIF4E-2, eIF(iso)4E, and the novel cap-binding protein (nCBP). These factors play roles in the process of the post-transcriptional regulation of gene expression. The eIF4Es are also used by numerous RNA viruses to synthesize their proteins. The quantitative detection of eIF4Es at the proteome level yields data about their abundances and the involvement of each factor in the process of translation initiation under normal and stress conditions. To quantify eIF4Es, we have developed a mass spectrometry protocol for the detection of isoforms in potato S. tuberosum leaf tissues by multiple reaction monitoring (MRM) assay. As a result, we have detected all potato eIF4Es and determined their amounts with the most abundant protein, eIF4E-1.



中文翻译:


使用多反应监测定量检测马铃薯叶组织中翻译起始因子 4E 亚型的方法


 抽象


与其他茄科植物一样,马铃薯有一个真核翻译起始因子 4E (eIF4E) 小家族,包括四种蛋白质 eIF4E-1、eIF4E-2、eIF(iso)4E 和新型帽结合蛋白 (nCBP)。这些因子在基因表达的转录后调控过程中发挥作用。许多 RNA 病毒也使用 eIF4E 来合成其蛋白质。在蛋白质组水平上定量检测 eIF4Es 可产生有关其丰度以及每个因子在正常和应激条件下翻译起始过程中的参与程度的数据。为了定量 eIF4E,我们开发了一种质谱方案,用于通过多反应监测 (MRM) 测定法检测马铃薯 S. tuberosum 叶组织中的亚型。结果,我们检测到了所有马铃薯 eIF4E,并使用最丰富的蛋白质 eIF4E-1 确定了它们的数量。

更新日期:2024-12-27
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