Stephen M G Duff, Meiying Zhang, Fred Zinnel, Timothy Rydel, Christina M Taylor, Danqi Chen, Gregory Tilton, Patricia Mamanella, David Duda, Yanfei Wang, Bosong Xiang, Balasulojini Karunanandaa, Rita Varagona, Jaishree Chittoor, Qungang Qi, Erin Hall, Graeme Garvey, Jiamin Zeng, Jun Zhang, Xin Li, Tommi White, Agoston Jerga, Jeff Haas
The transgenic expression of rice triketone dioxygenase (TDO; also known as HIS1) can provide protection from triketone herbicides to susceptible dicot crops such as soybean. Triketones are phytotoxic inhibitors of plant hydroxyphenylpyruvate dioxygenases (HPPD). The TDO gene codes for an iron/2-oxoglutarate-dependent oxidoreductase. We obtained an X-ray crystal structure of TDO using SeMet-SAD phasing to 3.16 Å resolution. The structure reveals that TDO possesses a fold like that of Arabidopsis thaliana 2-oxoglutarate‑iron-dependent oxygenase anthocyanidin synthase (ANS)...
November 13, 2023: Biochimica et Biophysica Acta. General Subjects