Chikashi Toyoshima

Chikashi Toyoshima (, Hepburn: ; born July 17, 1954) is a Japanese biophysicist, a professor at the University of Tokyo and a Foreign Associate of the National Academy of Sciences in the United States. His research focuses on two proteins: the Ca²⁺ ATPase, and the Na⁺/ K⁺-ATPase. Toyoshima's research about Ca²⁺ ATPase started in 1989. He and his colleagues obtained the world's first series of images of Ca²⁺ ATPase at the atomic level. He has determined the crystal structures of ten intermediates of Ca²⁺ ATPase via X-ray crystallography, cryogenic electron microscopy (cryo-EM), among other methods. Toyoshima and Poul Nissen were awarded the Gregori Aminoff Prize in 2016 by The Royal Swedish Academy of Sciences for their fundamental contributions to understanding the structural basis for ATP-driven translocation of ions across membranes. Provided by Wikipedia