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Identification technique development for post-transcriptional modifications of pseudouridylation in human RNA by mass spectrometry

Research Project

Project/Area Number 18K14253
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 34020:Analytical chemistry-related
Research InstitutionTokyo Metropolitan University

Principal Investigator

Yamaki Yuka  首都大学東京, 理学研究科, 客員研究員 (80781525)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords質量分析 / RNA / 転写後修飾 / シュードウリジン / LC-MS
Outline of Final Research Achievements

U2 snRNA and U3 snoRNA were purified from RNA biosynthesized with uridine-5,6-d2 in the human TK6 cells deficient in mono phosphate synthase. U2 snRNA and U3 snoRNA were analyzed by LC-MS after digestion with RNase. Spectrum were searched in the database Ariadne, and novel pseudouridylation sites were revealed.

Academic Significance and Societal Importance of the Research Achievements

シュードウリジン化酵素によりウリジンがシュードウリジン化修飾を受けても、化学的性質に変化は見られず質量に差が生じないことから、質量分析計で両者を判別することは困難であった。しかし、ΔUMPS株とラベルウリジンを用いることで、シュードウリジン化修飾により生じる質量差を利用することで、シュードウリジン化サイトを明らかにすることが可能になった。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (1 results)

All 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results)

  • [Journal Article] Landscape of the complete RNA chemical modifications in the human 80S ribosome.2018

    • Author(s)
      Taoka M, Nobe Y, Yamaki Y, Sato K, Ishikawa H, Izumikawa K, Yamauchi Y, Hirota K, Nakayama H, Takahashi N, Isobe T.
    • Journal Title

      Nucleic Acids Res.

      Volume: 46 Issue: 18 Pages: 9289-9298

    • DOI

      10.1093/nar/gky811

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access

URL: 

Published: 2018-04-23   Modified: 2021-02-19  

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