Reconstitution of diphthine synthase activity in vitro.

  title={Reconstitution of diphthine synthase activity in vitro.},
  author={Xuling Zhu and Jungwoo Kim and Xiaoyang Su and Hening Lin},
  volume={49 44},
Diphthamide, the target of diphtheria toxin, is a unique posttranslational modification on eukaryotic and archaeal translation elongation factor 2 (EF2). Although diphthamide modification was discovered three decades ago, in vitro reconstitution of diphthamide biosynthesis using purified proteins has not been reported. The proposed biosynthesis pathway of diphthamide involves three steps. Our laboratory has recently showed that in Pyrococcus horikoshii (P. horikoshii), the first step uses a… CONTINUE READING