Nature Communications (Aug 2020)

Femtosecond X-ray emission study of the spin cross-over dynamics in haem proteins

  • Dominik Kinschel,
  • Camila Bacellar,
  • Oliviero Cannelli,
  • Boris Sorokin,
  • Tetsuo Katayama,
  • Giulia F. Mancini,
  • Jérémy R. Rouxel,
  • Yuki Obara,
  • Junichi Nishitani,
  • Hironori Ito,
  • Terumasa Ito,
  • Naoya Kurahashi,
  • Chika Higashimura,
  • Shotaro Kudo,
  • Theo Keane,
  • Frederico A. Lima,
  • Wojciech Gawelda,
  • Peter Zalden,
  • Sebastian Schulz,
  • James M. Budarz,
  • Dmitry Khakhulin,
  • Andreas Galler,
  • Christian Bressler,
  • Christopher J. Milne,
  • Thomas Penfold,
  • Makina Yabashi,
  • Toshinori Suzuki,
  • Kazuhiko Misawa,
  • Majed Chergui

DOI
https://doi.org/10.1038/s41467-020-17923-w
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 8

Abstract

Read online

The change from low-spin hexacoordinated to high-spin pentacoordinated domed form in heam upon ligand detachment and the reverse process underlie the respiratory function. The authors, using femtosecond time-resolved X-ray emission spectroscopy, capture the transient states connecting the two forms in myoglobin-NO upon NO photoinduced detachment.