Characterization of the catalytic mechanism of DyP which is a representative novel peroxidase family.

• Project/Area Number: 22570136
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Functional biochemistry
• Research Institution: Japan Women's University (2011-2012); Tokyo Institute of Technology (2010)
• Principal Investigator: SUGANO Yasushi 日本女子大学, 理学部, 教授 (90282855)
• Co-Investigator(Renkei-kenkyūsha): TSUGE Hideaki 京都産業大学, 総合生命科学部, 教授 (40299342)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: DyP / 触媒メカニズム / X線結晶構造解析 / ＤｙＰ型ペルオキシダーゼ / ＤｙＰ / 反応メカニズム / スイングモデル / 基質結合部位 / アントラキノン / 加水分解 / ペルオキシダーゼ / スイングメカニズム / DyP-typeペルオキシダーゼ / 分子進化 / クロロジスムターゼ / EfeB

Research Abstract

So far, the catalytic mechanism of DyP was unknown. In this study, we have proved that aspartic acid 171 is the catalytic residue because the mutant of aspartic acid to asparagine has lost the activity completely. We’ve also proposed that the catalytic mechanism depends on the swinging movement of the aspartic acid. Throughout the whole research, DyP has been assigned a new EC number (EC 1.11.1.19) and has been taken notice over the world.

Research Products

• [Journal Article] Crystal structures ofdye-decolorizing peroxidase with ascorbic acid and 2,6-dimethoxyphenol (2012)
  • Author(s): T. Yoshida, H. Tsuge, T. Hisabori, Y. Sugano
  • Journal Title: FEBS Letters Volume: 586(24) Pages: 4351-4356
• [Journal Article] Crystal structure of dye-decolorizing peroxidase with ascorbic acid and 2,6-dimethoxyphenol (2012)
  • Author(s): T. Yoshida, H. Tsuge, T. Hisabori, Y. Sugano
  • Journal Title: FEBS Letters Volume: 586 Pages: 4351-4356
  • Peer Reviewed
• [Journal Article] The catalytic mechanism of dye-decolorizing peroxidase DyP may require theswinging movement of an aspartic acid residue (2011)
  • Author(s): T. Yoshida, H. Tsuge, H. Konno, T.Hisabori, Y. Sugano
  • Journal Title: FEBS Journal Volume: 278(13) Pages: 2387-2394
• [Journal Article] Degradation of the synthetic dye amaranth by the fungus Bjerkandera adusta Dec 1: Inference of the degradation pathway from an analysis of decolorized products (2011)
  • Author(s): N. Gomi, S. Yoshida, K. Matsumoto, M.Okudomi, H. Konno, T. Hisabori, Y.Sugano
  • Journal Title: Biodegradation Volume: 22(6) Pages: 1239-1245
• [Journal Article] Degradation of the synthetic dye amaranth by the fungus Bjerkandera adusta Dec 1 (2011)
  • Author(s): N. Gomi, S. Yoshida, K. Matsumoto, M. Okudomi, H. Konno, T. Hisabori, Y. Sugano
  • Journal Title: Biodegradation Volume: 22 Pages: 1239-1245
  • Peer Reviewed
• [Presentation] Inference of the degradation pathway of amaranth from an analysis of decolorized products by the fungus Bjerkandera adusta Dec 1 (2011)
  • Author(s): Y. Sugano
  • Organizer: FEMS Congress
  • Place of Presentation: ジュネーブ、スイス