Ni-NTA-gold clusters target His-tagged proteins.

@article{Hainfeld1999NiNTAgoldCT,
  title={Ni-NTA-gold clusters target His-tagged proteins.},
  author={James F. Hainfeld and Wenbin Liu and Contact Halsey and Paul Freimuth and Richard Douglas Powell},
  journal={Journal of structural biology},
  year={1999},
  volume={127 2},
  pages={185-98}
}
Addition of six histidines to recombinant proteins has proved useful in their purification by nickel-affinity columns. This technology was adapted by synthesizing the chelator for nickel (nitrilotriacetic acid, NTA) onto the surface of gold clusters. These Ni-NTA-gold clusters were shown to specifically target the 6His region of tagged proteins. Results were verified by column chromatography, dot and overlay blots, UV-Vis spectroscopy, and scanning transmission electron microscopy. A 6His… CONTINUE READING