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Development of phospholipid analogs for stable solubilization of membrane proteins and application for high resolution NMR analysis

Research Project

Project/Area Number 26670012
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Physical pharmacy
Research InstitutionKyoto University

Principal Investigator

Matsuzaki Katsumi  京都大学, 薬学研究科(研究院), 教授 (00201773)

Co-Investigator(Kenkyū-buntansha) YANO YOSHIAKI  京都大学, 大学院薬学研究科, 助教 (60402799)
HOSHINO MASARU  京都大学, 大学院薬学研究科, 准教授 (70304053)
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords膜タンパク質 / 可溶化剤 / 脂質ナノディスク / 無細胞合成
Outline of Final Research Achievements

Membrane proteins are important drug targets, however, structural investigations by solution NMR have limitations due to aqueous insolubility of membrane proteins. The phospholipid-based agent cholyl-PC was examined to solubilize membrane proteins into micelles with small size. Cholyl-PC preserved native structure of solubilized bacteriorhodopsin for 1 week even at 50℃. By using a cell-free system, another membrane protein, β2 adrenergic receptor, was synthesized, the N-terminus of which was specifically labeled with a synthetic fluorophore.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report

URL: 

Published: 2014-04-04   Modified: 2017-05-10  

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