view article
Figure 4
High-frequency single-crystal resonance Raman spectra of DtpA at 100 K. Blue, ferric crystal spectrum before exposure to the X-ray beam; magenta, spectrum of the same crystal after collection of a diffraction data set. A shift in the ν4 redox-state marker band (arrow) is consistent with reduction to the ferrous form during data collection.

IUCrJ
Volume 4| Part 3| May 2017| Pages 263-270
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517002159