波谱学杂志 ›› 2021, Vol. 38 ›› Issue (2): 155-163.doi: 10.11938/cjmr20202854

• 研究论文 • 上一篇    下一篇

Bacillus subtilis转录因子CtsR蛋白中clpC操纵子结合区域的NMR研究

陈晓雯1,黄碧玲1,黄少华1,*(),赵玉芬1,2,3,*()   

  1. 1. 宁波大学 新药技术研究院, 浙江 宁波 315211
    2. 厦门大学 化学化工学院, 福建省化学生物学重点实验室, 福建 厦门 361005
    3. 清华大学 化学系, 生命有机磷化学与化学生物学重点实验室, 北京 100084
  • 收稿日期:2020-09-21 出版日期:2021-06-05 发布日期:2020-11-20
  • 通讯作者: 黄少华,赵玉芬 E-mail:huangshaohua@nbu.edu.cn;zhaoyufen@nbu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(91856126);福建省化学生物学重点实验室(厦门大学)开放基金资助项目(2021001)

An NMR Study on the clpC Operon Binding Region of Transcription Factor CtsR from Bacillus subtilis

Xiao-wen CHEN1,Bi-ling HUANG1,Shao-hua HUANG1,*(),Yu-fen ZHAO1,2,3,*()   

  1. 1. Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
    2. Department of Chemical Biology, College of Chemistry and Chemical Engineering, and the Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, China
    3. Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2020-09-21 Online:2021-06-05 Published:2020-11-20
  • Contact: Shao-hua HUANG,Yu-fen ZHAO E-mail:huangshaohua@nbu.edu.cn;zhaoyufen@nbu.edu.cn

摘要:

革兰氏阳性菌枯草芽孢杆菌(Bacillus subtilis)响应热刺激时,精氨酸激酶McsB磷酸化转录因子CtsR蛋白中clpC操纵子结合区域的Arg62(R)位点,使得CtsR与clpC操纵子解离,从而启动clpC相关基因的转录过程,以表达细菌应对热刺激所需的蛋白.本文以CtsR蛋白中结合clpC操纵子的区域(KRGGGG)为研究对象,通过对1H NMR、1H-1H COSY、1H-1H TOCSY、1H-15N HSQC和1H-13C HSQC等谱图的综合分析,对其1H、13C以及15N的化学位移进行归属,为该片段与clpC操纵子相互作用,以及精氨酸磷酸化调控机制的研究提供基础.

关键词: 转录因子, 核磁共振, 化学位移, 溶液结构

Abstract:

When Gram-positive bacterium Bacillus subtilis responds to heat-shock, protein arginine kinase McsB phosphorylates Arg62 (R) in the clpC operon binding region of transcription factor CtsR, leading to dissociation of CtsR and clpC operon and initiation of stress-genes transcription for the ensuing expression of heat-shock proteins. This work investigated the clpC operon binding region (KRGGGG) of CtsR with NMR spectra (i.e., 1H NMR, 1H-1H COSY, 1H-1H TOCSY, 1H-15N HSQC and 1H-13C HSQC). The 1H, 13C and 15N chemical shifts of the protein segment were assigned. The interaction between CtsR and clpC operon and the regulatory mechanism of arginine phosphorylation were analyzed.

Key words: transcription factor, nuclear magnetic resonance (NMR), chemical shifts, structure in solution

中图分类号: