Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland.
Molecular Life Science PhD Program of the Life Science Zurich Graduate School, Zurich, Switzerland.
EMBO Rep. 2018 Aug;19(8). doi: 10.15252/embr.201745310. Epub 2018 Jun 28.
Despite recent mass spectrometry (MS)-based breakthroughs, comprehensive ADP-ribose (ADPr)-acceptor amino acid identification and ADPr-site localization remain challenging. Here, we report the establishment of an unbiased, multistep ADP-ribosylome data analysis workflow that led to the identification of tyrosine as a novel ARTD1/PARP1-dependent ADPr-acceptor amino acid. MS analyses of ADP-ribosylated proteins confirmed tyrosine as an ADPr-acceptor amino acid in RPS3A (Y155) and HPF1 (Y238) and demonstrated that -modification of RPS3A is dependent on HPF1. We provide an ADPr-site Localization Spectra Database (ADPr-LSD), which contains 288 high-quality ADPr-modified peptide spectra, to serve as ADPr spectral references for correct ADPr-site localizations.
尽管最近在质谱(MS)技术方面取得了突破,但全面鉴定 ADP-核糖(ADPr)接受氨基酸和 ADPr 位点定位仍然具有挑战性。在这里,我们报告了一种无偏、多步骤的 ADP-核糖组数据分析工作流程的建立,该工作流程导致鉴定酪氨酸为新型 ARTD1/PARP1 依赖性 ADPr 接受氨基酸。对 ADP-核糖化蛋白的 MS 分析证实了酪氨酸是 RPS3A(Y155)和 HPF1(Y238)中的 ADPr 接受氨基酸,并表明 RPS3A 的 -修饰依赖于 HPF1。我们提供了一个 ADP-核糖基化位点定位谱数据库(ADPr-LSD),其中包含 288 个高质量的 ADPr 修饰肽谱,作为正确 ADPr 位点定位的 ADPr 谱参考。