論文

査読有り
2016年5月

A strategy for absolute proteome quantification with mass spectrometry by hierarchical use of peptide-concatenated standards

PROTEOMICS
  • Keiji Kito
  • ,
  • Mitsuhiro Okada
  • ,
  • Yuko Ishibashi
  • ,
  • Satoshi Okada
  • ,
  • Takashi Ito

16
10
開始ページ
1457
終了ページ
1473
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/pmic.201500414
出版者・発行元
WILEY-BLACKWELL

The accurate and precise absolute abundance of proteins can be determined using mass spectrometry by spiking the sample with stable isotope-labeled standards. In this study, we developed a strategy of hierarchical use of peptide-concatenated standards (PCSs) to quantify more proteins over a wider dynamic range. Multiple primary PCSs were used for quantification of many target proteins. Unique "ID-tag peptides" were introduced into individual primary PCSs, allowing us to monitor the exact amounts of individual PCSs using a "secondary PCS" in which all "ID-tag peptides" were concatenated. Furthermore, we varied the copy number of the "ID-tag peptide" in each PCS according to a range of expression levels of target proteins. This strategy accomplished absolute quantification over a wider range than that of the measured ratios. The quantified abundance of budding yeast proteins showed a high reproducibility for replicate analyses and similar copy numbers per cell for ribosomal proteins, demonstrating the accuracy and precision of this strategy. A comparison with the absolute abundance of transcripts clearly indicated different post-transcriptional regulation of expression for specific functional groups. Thus, the approach presented here is a faithful method for the absolute quantification of proteomes and provides insights into biological mechanisms, including the regulation of expressed protein abundance.

リンク情報
DOI
https://doi.org/10.1002/pmic.201500414
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000379050800002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1002/pmic.201500414
  • ISSN : 1615-9853
  • eISSN : 1615-9861
  • Web of Science ID : WOS:000379050800002

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