Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (19): 2024-2028. Previous Articles    

Note

过氧亚硝基阴离子对重组人干扰素α2b的氧化硝化修饰特征

赵广荣*,田莉莉,马琼,乔斌   

  1. (天津大学化工学院制药工程系 系统生物工程教育部重点实验室 天津 300072)
  • 投稿日期:2010-02-03 修回日期:2010-05-24 发布日期:2010-06-09
  • 通讯作者: 赵广荣 E-mail:grzhao@tju.edu.cn
  • 基金资助:

    国家自然科学基金项目;天津市自然科学基金资助

In vitro Nitration and Oxidation of Recombinant Human Interferon α2b by Peroxynitrite

ZHAO Guang-Rong, TIAN Li-Li, MA Qiong, QIAO Bin   

  1. (Key Laboratory of Systems Bioengineering, Ministry of Education, Department of Pharmaceutical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072)
  • Received:2010-02-03 Revised:2010-05-24 Published:2010-06-09
  • Contact: Guang-Rong ZHANG E-mail:grzhao@tju.edu.cn
  • Supported by:

    ;Tianjin Natural Science Foundation

In vitro nitration/oxidation characterization of recombinant human interferon α2b (rhIFN α2b) induced by peroxynitrite (ONOO-) was investigated. The modified peptide fragments of rhIFN α2b were analyzed, and the oxidized and nitrated amino acids were identified by HPLC-MS/MS. The results showed that Met16 of the helix A in rhIFN α2b was oxidized, and Tyr135 of the DE loop and Trp140 of the helix E were nitrated.

Key words: recombinant human interferon α2b, peroxynitrite, oxidation, nitration, amino acid modification